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The static behaviour of steel-concrete-steel sandwich plates is studied in this paper. Uniformly distributed and hydrostatic loads are applied on the plates. Two types of boundary conditions, clamped and simply supported on all edges, are considered. ANSYS Workbench 14.0, a finite element tool, is used for modelling and analysis of the sandwich plates. The sandwich plate results are compared with the results of isotropic steel plate. Maximum deflection and von Mises stress are computed on the sandwich plates. In actual condition, different steel connectors are used to make a bond between steel and concrete. But, due to the complexity in the analysis, the connectors are not modelled explicitly in the present study, and the bond between the two materials is established numerically. Considering the economy, the steel plate may be replaced with the steel-concrete-steel sandwich plate in many applications. Some of the applications of sandwich plate includes, building walls, offshore decks, tunnels, bridge decks, nuclear structure walls, etc. In the present study, the effectiveness of the plate having newer sandwich material, i.e., steel and composite, is checked based on the different loadings and boundary conditions. The results of the present study may be beneficial for the engineers/practitioners who deals in sandwich plates.

Weight is one of the important factors in aerodynamics; we need to reduce the weight of any flying object in order to get the higher lift force. Wight reduction of wing helps us to get better air craft efficiency and high performance. Aluminum alloys are used to make aircraft wing as it is suitable but in this study, we have used few light weighted composite materials for making the aircraft wing and other alloys as well where aluminum is used as the base material and it is mixed with other materials with different proportions for testing the performance. In this study, NACA 2412 airfoil has been chosen and the wing has been designed in Design Modeler 19. The model has been imported to ANSYS Workbench; the static structural analysis has been carried out by putting the required parameters. The objective of the study is to find out which material will be suitable for making aircraft wing among Carbon Fibers, Alpha-Beta Titanium alloy and Al-Zn-Mg alloy.

Wind power is the most successful forerunners of technological breakthroughs that could result in more efficient energy output. Because of the rapid advancement in the energy sector, there is a growing need to increase the energy efficiency and lifetime of wind turbines. As a result, a detailed understanding of the activity of wind turbines under different load conditions is important. This paper investigates the performance of composite material of four different types. ANSYS Workbench is used to perform a detailed study of a typical wind turbine blade. The composite materials are tested for Total deformation, Equivalent Von-Mises stress, Maximum shear stress and strain energy and result values are noted.

This research is the one-way interaction study of fluid loading on a plunging NACA-2412 modeled UAV wing. Fluid and Structures are two separate domains combined to study both, and their effects on the Aeroelastic structure. This study consists of experimental and computational analysis of the wing structure and the results were compared for effectiveness. The modeled wing was mounted on a cantilever structural setup by restricted to a single degree of freedom. The experimentation was comprised of the static aeroelastic responses of the wings under the aerodynamic loading produced in the wind tunnel for various Reynolds numbers and different angles of attack (α). After the deflection calculations, the model analysis was done using the ANSYS Workbench solid structural analysis and the results were compared with experimental values. The results of the Fluid-Structure Interaction (FSI) study of the wing were concluded for all angles of attack for different Reynolds numbers and aerodynamic loading. The rate of change of deflection due to the fluid loading at every α = 100 angles of attack was found to be 30% at the lowest Reynold’s numbers and a hike up to 60% for higher values.

This study aims to explore the knowledge on fluid flow properties of the aqueous humour (AH), specifically on the anterior segment (AS) of the human eye for a medical condition called Glaucoma. The research objectives are to study on fluid flow characteristics of velocity and pressure of the AH on the AS of the eye using enlarged 3D printed model and computational analysis, and also to analyse the suitability of the 3D generated anterior AS in fluid flow analysis application on particle image velocimetry (PIV). Using polyvinyl alcohol (PVA) as a water-soluble 3D printing filament, a 3D model of the AS of the human eye was generated with SolidWorks 2018 and printed using Creality Ender 3. This printed model serves as the pattern for silicon rubber mould production using vacuum casting process. Analysis of AH flow hydrodynamics are conducted with computational analysis using ANSYS Workbench 19.2. Key findings support that use of PVA material suite the creation of specific shapes and patterns for 3D modelling applications alike, and silicon rubber moulding creates a non-reactive and long-lasting mould for PIV applications. Computational analysis findings support the use of the generated model for PIV applications. Overall, the study successfully supports the use of 3D printed model for PIV application and future work that can be induced include direct experimentation of the mould with PIV.

Over the years, several architecture of smart home has been proposed to enable the use of ambient intelligence. However, the major issue with most of them lies in their lack of high reliability and scalability. Therefore, the first contribution of this paper introduces a novel distributed architecture for smart homes, inspired by private cloud architectures, which is reliable and scalable. This implementation aims at simplifying and encouraging both the deployment of new software components as well as their reutilization to achieve the activity recognition process inside smart homes. The second contribution of this paper is the introduction of the LIARA Environment for Modular Machine Learning (LE2ML), a new machine learning workbench. Its design relies on a microservices architecture to provide a better scalability as well as smaller and faster deployments. Experiments demonstrate that our architecture is resilient to both a node failure and a total power outage. Moreover, the workbench obtained similar results, as regards the performance of the recognition, when compared to previously proposed methods.

With the increasing availability of high-performance computing (HPC) platforms, uncertainty quantification (UQ) and sensitivity analyses (SA) can be efficiently leveraged to optimize design parameters of complex engineering problems using modeling and simulation tools. The workflow involved in such studies heavily relies on HPC resources and hence requires pre-processing and post-processing capabilities of large amounts of data along with remote submission capabilities. The NEAMS Workbench addresses all aspects of the workflows involved in these studies by relying on a user-friendly graphical user interface and a python application program interface. This paper highlights the NEAMS Workbench capabilities by presenting a semiautomated coupling scheme between Dakota and any given package integrated with the NEAMS Workbench, yielding a simplified workflow for users. This new capability is demonstrated by running a SA of a turbulent flow in a pipe using the open-source Nek5000 CFD code. A total of 54 jobs were run on a HPC platform using the remote capabilities of the NEAMS Workbench. The results demonstrate that the semiautomated coupling scheme involving Dakota can be efficiently used for UQ and SA while keeping scripting tasks to a minimum for users. All input and output files used in this work are available in https://code.ornl.gov/neams-workbench/dakota-nek5000-study .

Nowadays, a laboratory operator in the areas of chemistry, biology or medicine spends considerable time performing micropipetting procedures, a common, monotonous and repetitive task which compromises the ergonomics of individuals, namely related to wrist musculoskeletal disorders. In this work, the design of a kinesthetic teaching approach for automating the micropipetting technique is presented, allowing to redirect the operator to other non-repetitive tasks, aiming to reduce the exposure to ergonomic risks. The proposed robotic solution has an innovative gripping system capable of supporting, actuating and regulating the volume of a manual micropipette. The system is able to configure the position of diverse laboratory materials, such as lab containers and plates, on the workbench through a collaborative robotic arm, providing flexibility to adapt to different procedures. A projected human-machine interface, which combines the display of information on the workbench with an infrared based interaction device was developed, providing a more intuitive interaction between the operator and the system during the configuration and operation phases. In contrast to the majority of the existing liquid handling systems, the proposed system allows the operator to place the materials freely on the workbench and the usage of different materials’ variants, facilitating the implementation of the system in any laboratory. The attained performance and ease of use of the system were very encouraging since all the defined tasks in the conducted experiments were successfully performed by users with minimum training, highlighting its potential inclusion in the laboratory routine panorama.

The development and the experimental validation of a workbench capable of supporting outdoor flights using basically the affordable commercial quadrotor AR.Drone 2.0 and a personal computer is considered in this article. The text discusses some technical details of the developed system, focusing on how to achieve real-time navigation adopting a simplified dynamic model as a high-level representation of the vehicle in flight, a general-purpose nonlinear controller, suitable for different types of control applications, and a sensor fusion algorithm, designed to compensate for delayed measurements in the available sensory data. To check the effectiveness of such testbed, results associated to some experimental flights are presented, with the vehicle accomplishing positioning tasks, considering a fixed target point and a sequence of waypoints, and trajectory tracking tasks. Such results, associated to the theoretical analysis provided, allow claiming that the proposed system is an efficient way to guide the vehicle to accomplish different tasks. Additionally, the source code used is available for free download and modification, resulting in a valuable open-source workbench for researchers just starting working with aerial robotics.

We present the Infobiotics Workbench (IBW), a user-friendly, scalable, and integrated computational environment for the computer-aided design of synthetic biological systems. It supports an iterative workflow that begins with specification of the desired synthetic system, followed by simulation and verification of the system in high-performance environments and ending with the eventual compilation of the system specification into suitable genetic constructs. IBW integrates modeling, simulation, verification, and biocompilation features into a single software suite. This integration is achieved through a new domain-specific biological programming language, the Infobiotics Language (IBL), which tightly combines these different aspects of in silico synthetic biology into a full-stack integrated development environment. Unlike existing synthetic biology modeling or specification languages, IBL uniquely blends modeling, verification, and biocompilation statements into a single file. This allows biologists to incorporate design constraints within the specification file rather than using decoupled and independent formalisms for different in silico analyses. This novel approach offers seamless interoperability across different tools as well as compatibility with SBOL and SBML frameworks and removes the burden of doing manual translations for standalone applications. We demonstrate the features, usability, and effectiveness of IBW and IBL using well-established synthetic biological circuits.

In this paper, new traceable measurement systems for automatic calibration of high current sources have been established at the National Institute of Standards (NIS), Egypt. These systems can be used in laboratories mainly depending on calibrators with current coils, in case of unavailability of current transformers. Traceability of high current has been achieved to the primary standards of low voltages. NIS primary standards of DC and AC low voltages were used to realize the traceability to the International System of Units (SI) for DC and AC high currents up to 1000 A at 50 Hz. A traceable AC/DC clamp probe with calibrated nominal ratio of 1 mV/A has been used in the calibration system to realize high currents in terms of low voltages. Measurements have been automatically performed and controlled using the Laboratory Virtual Instrument Engineering Workbench (LabVIEW). Evaluations of results are presented and discussed. Normalized error (En) statistical method as well as error bar graphical representations are presented to prove that the new measurement systems are reliable and dependable for high current measurements.

In this paper, deformation, Von-Mises stress, and failure analysis were carried out on a base stand using ANSYS workbench. The structural design was carried out using SolidWorks software and then imported into the ANSYS workbench for analysis. The investigation is performed using four different materials, i.e., structural steel, aluminum alloy, carbon fiber, and copper alloy, with an applied loading force of 1000 N at the tip of the structure. This technique highlights a complete reaction of the structure to the loading force, therefore providing room for structural optimization to reduce the risk of unexpected failure and unnecessary material wastage. The results obtained were compared and analyzed to identify the best material capable of withstanding the subjected force. Based on the Von-mises result, Carbon fiber has the highest possible maximum stress value of 4.70e+07 Pa, followed by structural steel, then Copper alloy. At the same time, the aluminium alloy has the least minimum Von-Mises. Structural steel is the very best option based upon the analysis outcomes. Its factor of safety is above unity in all the designs, which indicates that the structure has been over-designed. For that reason, it is suggested that the structure needs to be enhanced. Keywords: Finite element analysis, base stand, ANSYS, deformation, von mises stress.

Introduction. Spun reinforced concrete columns are widely used in the present-day international construction practice. Known formulas, used to calculate temperatures of cross sections of reinforced concrete structures, needed to assess their fire resistance limit, are successfully applied to homogeneous structures that have solid sections. However, they are inapplicable to spun reinforced concrete columns due to their structural features. The purpose of this work is to develop a method for solving a thermal problem of spun reinforced concrete columns and adapt existing calculation formulas.Materials and methods. This work addresses the heating of spun reinforced concrete structures in case of fire. Ansys Workbench was employed to perform the computer simulation needed to study the influence of the characteristics of spun reinforced concrete columns on their heating. Results and discussion. In the course of the theoretical studies, the effect, produced by column cavities, the heterogeneity of spun concrete and thin walls of these structures on the heating of their cross sections was assessed with regard for the results of full-scale fire tests of spun reinforced concrete columns. Correction coefficients were obtained in order to take account of these factors. A regression equation was derived as a result of the simulation performed in the context of a full-scale factorial experiment involving coefficient khol, which takes into account the rising temperature of hollow reinforced concrete structures in comparison with solid ones. Khet heating acceleration coefficient is applicable to spun reinforced concrete structures due to the heterogeneity of concrete in the cross section. This coefficient represents a function of the wall thickness. Coefficient kth, which allows for the heating acceleration in the course of crack opening in thin-walled structures, varies in the range of 1.00…1.40. The concrete cracking temperature is 550 °C.Conclusion. A new method allows to solve the thermal problem of fire resistance of spun reinforced concrete columns. The engineering formula used to calculate the temperature in a cross-section was adapted. The results of computer-aided simulation and calculation of temperature values, performed using the adapted formula, show acceptable convergence with the experimental data.

This study focuses on the Bubnov-Galerkin finite element model used to obtain the stresses and pressure fields set up at various cross-sections of a blank during the metal forming process. Four Lagrange quadratic elements were assembled to represent the various blanks. The governing equation adopted is a one-dimensional differential equation describing the pressures and stresses exerted on the forming process. In conducting the analysis, the various blanks are divided into a finite number of elements and further applying the Bubnov-Galerkin-weighted residual method to obtain the weighted integral form; the finite element model is obtained in a matrix form, from the weighted residual boundary conditions which are now applied to obtain the pressure distribution across the cross-section of the various blanks. Finite element results are obtained for a value of the coefficient of friction, die angle, length, and blank radius. Solution of the finite element method was compared with the exact solution, along with an experimental test known as press-fit analysis using Ansys Workbench, a program-controlled mesh of polar hexahedral elements which was utilized to further validate the result. Furthermore, the use of a computer-aided software assists in visualizing the solution of the tube sinking problem. The results were all presented in both tabular and graphical modes. This study shows that there are potentials for using this approach in engineering practices to ensure that the strength of materials be considered before usage in design and fabrication. These results are expected to improve advance knowledge in manufacturing processes.

One of the core tools of horizontal well-staged fracturing completion technology is the compressed packer. The sealing and stability of packer rubber are key factors affecting the safe exploitation of high temperature, high pressure, and deep, complex oil and gas resources. The phenomenon of low setting pressure and early setting failure frequently occurs due to the unreasonable sealing structure. Therefore, in this paper, the tensile test of dumbbell hydrogenated nitrile butadiene rubber (HNBR) samples is conducted, and the stress-strain data of HNBR were obtained. The finite element mechanical model (FEM) of compressed PHP packer is established with consideration of material nonlinearity, geometric nonlinearity and double contact nonlinearity by adopting large-scale finite element analysis software ANSYS Workbench, verified by measured test data. Based on the verified FEM, the mechanical behavior and sealing performance of the original rubber under different setting loads are simulated. The contact pressure and its distribution, deformation, compression stroke of rubber and the relationship between them and axial loads are obtained. The mechanical behavior and sealing performance of packer rubber under different heights, thicknesses, external bevel angles, loading modes and steel-rubber friction coefficients with and without outburst prevention devices are investigated systematically using a manual-graphical optimization trial method. Results show that the packer rubber with the height of 75 mm, external bevel angle of 45°, steel-rubber friction coefficient ranging from 0.10 to 0.15 and outburst prevention devices can achieve the largest contact pressure and best sealing performance by adopting the setting method of bidirectional loading.

The main goal of the project is weight analysis of scissor lifting table in the ware house, the scissor lifting table is a common device for all kind of peoples, we go to do the structural analysis of the scissor lifting table with the various human weights scissor lifting table modelled in Solid works software and structural analysis of human weights 50kg, 75kg, 100kg and 125kg done in ANSYS workbench software Scissor-type systems are frequently used as

In this article, we analyze the strength and buckling response in the plane shear load fixed at the corner of the composite plate. The fem is formulated is done on the basis of first-order shear deformation theory and assumptions of von Karman. The Newton-Raphson technique is considered to analyze the non-linearity algebraic equation. The effect of shape memory alloy in shear load and buckling response is discussed. In this study we analyze the two cases in the first simple carbon/epoxy plate is analyze and then we use the shape memory wire embedded in the plate which is about 1% of the volume of the plate and studies the buckling response effect on the plate. In the second case we use Shape Memory Alloy plate and loading but a circular cutout at the middle of the plate this case we analyze for both with the use of shape memory alloy and without the use of shape memory. It is observed that the shape memory alloy increases the strength of the plate in both cases. The whole simulations are done using Ansys workbench software v 2020R2.

The paper introduces the results of studying the stress-strain state of the Novikov gearing in comparison with the involute gearing, similar in geometric parameters. In both versions, the wheel and gear are selected in size and gear ratio in accordance with the most common recommendations without additional hardening by chemical heat treatment. The zone of multiple contact of mated profiles is analyzed: changes in the geometry of contacts, pressure in the contact and stresses in various phases of gearing.

The explosions caused by terrorism and/or accidental lead to serious damage and/or collapse in structures, economic losses, and most importantly endanger public safety. The blasting loads that can be larger than design loads are generally neglected in the design stage of civil engineering structures, despite these catastrophic effects. For these reasons, especially strategically important structures such as hospitals, military buildings, and bridges should be designed considering the blasting effects. To this aim, the effects of design parameters such as concrete strength and openings in infill walls on blasting responses of reinforced concrete (RC) buildings are investigated in this study. In situ experimental tests are firstly conducted on a test specimen constructed with brick elements to verify the finite element (FE) model criteria and assumptions. The blasting experiments are performed using 40, 150, and 290 g trinitrotoluene (TNT) explosives. Then, two RC buildings are selected as application, and blasting analyses are done with numerical and empirical methods. FE models of the buildings including structural and non-structural elements are constituted in ANSYS Workbench software. The blasting analyses are carried out with ANSYS AUTODYN software using 100 kg TNT explosives. In the analyses, two different openings in infill walls and six different concrete classes are considered. The blasting pressures, displacements, absorbed and released total energies, and damage ratios are obtained and presented as comparison parameters. The results obtained from the blasting analyses are presented with graphics and tables, comparatively. The study shows that peak pressures and maximum displacements decrease by 22.50% and 32.16% with the increase in concrete strength. Also, it is observed from numerical analyses that openings in infill walls lead to a change of 8.16% in peak pressures and 13.92% in maximum displacements.

This research work reveals the modeling and investigation of composite leaf spring delivered utilizing polymers strengthened with glass fiber. The plan and investigation of composite leaf spring created utilizing polymers reinforced with glass fiber. The modeling constraints are strains, stresses and deflection. Measurements of the present standard steel leaf spring of a light commercial vehicle. Using E-Glass/Epoxy unidirectional covers, indistinguishable measurements from customary leaf spring are used to make a composite multi leaf spring. The 3-D model of traditional leaf spring is also dynamically analyzed using ANSYS 12 Workbench and contrasted with the analytical results.

Background: Cranial asymmetry has been associated with the laterality of neurological diseases including chronic subdural hematoma, subdural hygroma, and stroke. Although picture archiving and communication systems (PACS) are commonly used radiologic tools, simple angle or contoured area measurement cannot accurately reflect the actual severity of cranial asymmetry. Therefore, we developed an objective semi-automated image analysis tool based on the Laboratory Virtual Instrument Engineering Workbench (LabVIEW) system and compared its efficacy and variability with those of PACS in measuring cranial asymmetry. Methods: This image analysis software was developed on the basis of the LabVIEW system. Three sizes of plastic water pipes and computed tomographic images of the brain from three patients were used for experimental and clinical validations, respectively. We compared the percent error of the calculated areas of the pipes as well as coefficient of variation (CV) and cranial index of symmetry (CIS) ratio obtained from LabVIEW and PACS. Results: Experimental validation showed the overall mean difference of actual size versus estimated size obtained using PACS and LabVIEW-based image analysis to be 7.51% and 4.68%, respectively. This result indicated that LabVIEW-based image analysis provided an estimated area closer to that of the actual size of the phantom, with significantly low inter- and intraobserver variability (P < 0.001). Clinical validation also showed lower variability in the CVs and CIS ratios of areas estimated using LabVIEW-based image analysis, ranging from 0.01% to 0.13% and from 89.2% to 99.1%, respectively. Conclusion: Our study demonstrated through experimental and clinical validation that LabVIEW-based image analysis is a convenient and effective method for investigating cranial asymmetry. This imaging tool can provide more clues in understanding cranial asymmetry.

The steering knuckle is one of the critical and bulky components of the formula society of automotive engineers (FSAE) car. In the FSAE weight of the vehicle is the main objective concern, therefore, the aim is to redesign the upright by using hybrid metal matrix composite material so that factor of safety (FOS) remains larger than two but the weight of the component decreases. The aluminum alloy 7075-T6 is reinforced with silicon carbide and the magnesium powder is used for the preparation of a composite. Static structural analysis of the steering knuckle made of Al-10 wt% SiC-1 wt% Mg was performed using the ANSYS18.1 workbench. The outcomes of the steering knuckle produced of hybrid MMC with improved construction were compared with the results of the old aluminum alloy steering knuckle on the grounds of the real loading cases working under dynamic conditions. From this structural study, it is found that the lower wishbone mount of the knuckle has the highest stress and deflection during service. Cross sectional knuckle area was analyzed and geometrically optimized for maximum shear / maximum stress. The fatigue life and FOS of the hybrid MMC knuckle is investigated in the worst case of testing. The findings obtained from the analytical and FEA study are highly favourable for the changed design with MMC.

The aim of this present work is to find natural frequency for both existing and proposed horn mounting bracket designs to avoid the possibility of resonance. Next is to find out the dynamic behavior of existing bracket assembly from 5 to 17.3 Hz at the peak to peak distance of 10 mm by means of harmonic response analysis and then to find out the fatigue life using Goodman curve by vibrating the bracket assembly at first resonance frequency at 1.5 G acceleration. Finite element analysis (FEA) is carried to analysis the horn mounting bracket using ANSYS workbench software.

In this paper, a helical compression spring used in commercial transport three-wheeler has been modelled as a multi-objective optimisation problem. The objective functions considered in this study are reducing the volume of the spring and increasing the strain energy of the spring used in the light automotive. Minimizing the volume of the spring leads to reducing the cost of the spring. The utility and functionality of the spring can be improved by increasing the strain energy of the helical spring. Design parameters such as diameter of the spring wire, diameter of the coil spring and number of active turns of the spring are optimized in this study by using multi-objective optimisation formulation. Heuristic techniques such as Genetic Algorithms are used to find Pareto optimal solutions for a wide variety of engineering problems with multiple objectives. In this work, non-dominated solutions are generated using Non-Dominated Sorting GA-II approach. The Pareto-optimal solutions obtained in this study are validated using a numerical approach using ANSYS workbench.

This paper is regarding designing and manufacturing of an air intake assembly for a KTM 390 Duke’s engine having a displacement of 373.15 cc. Key to enhance vehicle performance is to optimize and design such a light weight air intake assembly so as to have increased torque across the wheels through a wide range of engine RPM. CFD simulations on ANSYS Workbench 19.2 are done to validate minimum loss of pressure and maximum velocity of air across the CAD model of assembly. For manufacturing, rapid prototyping followed by layering with fiber reinforced plastic (FRP) is considered as these techniques provide freedom to design any possible geometry without compromising on strength and helps in weight reduction.

The present work focuses on modeling and FEA of connecting rod to predict the fatigue life of Hero Splendor Plus I.C. Engine made by four materials (AISI 4140 Cr-Mo High Tensile Steel, 42crMo4, Aluminium 7075 T6, Forged Steel). To begin with, the different materials are chosen for connecting rod. Analytical analysis is carried out to arrive at the design specifications for connecting rod. The Connecting rod has been modeled using NX 11 software and imported to ANSYS V15.0 workbench to assess the FEA. Tetrahedron meshing method is used and the boundary conditions to be immovable on big end and load applied at the small end. The applied force has been the maximum gas force 30.4 KN. Analytical computations are carried out with the different materials and at the end, comparison of numerical results, analytical results, cost for the different materials is carried for validation. From the static stress analysis and on comparison with four materials it is concluded that material 42CrMo4 has less deformation of 5.52296 * 10-8 mm and less Von Mises stress of 189.386 MPa than the other material comparatively. Results revealed that the material 42CrMo4 can be replaceable in place of conventional material for connecting rod of Hero Splendor Plus I.C. Engine.

This paper undertakes the design, modeling and simulation of the suspension system for a Formula Student Vehicle. Suspension systems are the most integral part of a vehicle. This system is responsible for smoothing out the disturbances of a ride caused by uneven tracks while also maintaining optimum contact with the track surface at all times. The study takes place in three phases. The first phase includes the determination of ideal inboard and outboard pickup points for the suspension system of a Formula Student vehicle according to the identified design constraints. The second phase includes the determination of spring stiffness & optimum geometric set-ups for pushrod-actuated double-wishbone suspension systems using Motion Ratio Calculators devised to calculate the spring travel at defined intervals of wheel travel of the suspension system. This phase concludes in increasing motion ratios with an average of 1.20 and 1.01 for front and rear suspension set-ups, respectively. The third phase includes the material selection, design, simulation and optimization of bell-cranks. This phase concludes in safe bell-crank designs with factors of safety 4.88 and 3.3 and weight reduction of 79.4% and 74% for front and rear bell-cranks, respectively with AISI 1018 as the chosen material. The bell-cranks are modeled using SolidWorks® and their Finite Element Analysis is performed using ANSYS® Workbench.

The paper presents some important concepts for intelligent educational systems (IES) and proposes a subdivision of IES into functional modules. Each functional module relates to a set of specific requirements for the IES that consider both technological and people-related aspects. Bearing these requirements in mind, we have used our industrial experience to design and develop hardware sensor devices and actuators that communicate through a LoRa-based wireless sensor network (WSN) and a custom communication protocol. These devices are integrated into the IES for the purposes of gathering feedback about the learning process and providing data for future analyses. In addition, we discuss briefly our design and prototype implementation of a laser projection system capable of displaying graphical or text-based information directly on the student’s desk or workbench as a type of augmented reality display.

The work contains Crack growth is seen in the Existing model i.e. (R = 1.2) with comparison with the changed model i.e. (R = 2). So disk is modelled by using Solid works software of version 2016 & Analysis is done in ANSYS workbench of version 19.2. The material property applied to the disk is (TI-8AL-1MO-1V) alloy. Based on the following Design, meshing and results the following parameters were concluded (deformation, Equivalent stress, Equivalent strain and Fracture). The modelled designs i.e. existing and changed model were compared and interpreted.

This study evaluates the Concrete filled steel tubular sections (CFST) which is chosen based-on the features of its high capacity, economic, fire resistant and the better seismic act than steel structures. It utilizes the gain of both concrete and steel; it is preferred for its large energy inclusion capacity and degradation due to lower strength. CFST uses Steel tubes structures have sections thinner which are compared with normal columns made of steel. But members get deteriorated owing to environmental factors like ageing and corrosion. Under thought of these feasibilities a relative study has been made between square and circular section for different concrete mixes Nominal concrete (NC), Recycled aggregate concrete (RAC), high performance concrete (HPC)). The effectiveness and act regarding Stress strain, load deflection behavior, collapse pattern are studied in investigational models and resemblance with mathematical model which is done in ANSYS workbench module. In order to avoid degradation due to environmental effects Anti-corrosion agent is used while fabrication.

Guest Editorial

Giyotin makas kesme sırasında titreşim oluşturur ve titreşimlerin makinenin yerleştirildiği zemine iletmesini minumuma indirgemek için yalıtım yapılır. Giyotin makasın gövdesinde ve zemindeki titreşim büyüklükleri deneysel yollarla belirlenmiştir. Titreşim takozunun tezgâh gövdesindeki ve zemine geçen titreşime etkisi, titreşim takozsuz ve titreşim takozlu duruma göre incelenmiştir. Dört kanallı ivme ölçerle yer değiştirme, hız ve ivme değerleri ölçülmüştür. Titreşim ölçümü 1000 mm boyunda ve 2 mm kalınlığındaki sac levhanın kesimi esnasında yapılmıştır. Tezgâh ağırlığına ve kapasitesine göre seçilen dört adet titreşim takozu tezgâh ayaklarına yerleştirilmiştir. Tezgâhın ve zeminin titreşim büyüklükleri eş zamanlı olarak ölçülmüştür. Titreşim takozlu ve titreşim takozsuz yapılan ölçüm sonuçları arasındaki farklar grafikler üzerinde gösterilmiştir. Sonuç olarak, giyotin makasın zemin bağlantısında titreşim takozu kullanılması hem tezgâh gövdesindeki hem de zemine geçen titreşimi azalttığı görülmüştür., In this study, the effect of elastomer vibration wedges on workbench vibration isolation was investigated to provide vibration isolation of guillotine shears. For this purpose, first, vibrationmagnitudes on the body and the ground of the guillotine shear were determined experimentally. Then, four vibration wedges selected according to the weight and capacity of the machine were placed under the workbench legs. The effect of the vibration wedge on the vibration on the body of the machine and on the floor was examined. The vibration values of the workbench and the floor were measured simultaneously with a four-channel accelerometer. The differences between the measurement results made with and without vibration wedges are shown on the graphs. As a result, it has been observed that by using vibration wedge in the ground connection of the guillotine shears, it reduces the vibration both in the workbench body and the ground.

This paper mainly studies the hydrostatic turntable of precision milling and grinding compound machining center in aerospace processing equipment, and innovatively designs and analyzes the mesa. It is proposed to replace the traditional 40Cr with imported marble for the mesa. Firstly, the vibration model of the hydrostatic turntable is carried out. ANSYS Workbench software is used to compare and analyze the original and marble materials. In the process, the static characteristics and the difference of first-order modes of the two materials are compared. In addition, the analytical results are used for manufacturing. The results show when the applied force reaches the limitation 29400N, the maximum displacement of 40Cr increases sharply to 8.9406μm; while the marble material reaches 2.6μm. Meanwhile, it is obtained that the power consumed by marble is reduced by 39.12% compared with 40Cr. The weight of marble is reduced by 39.36% compared with 40Cr. Marble is about 21.59% higher than 40Cr in the comparison of vibration mode results

Machine tools are assembled by thousands of components. The surface between two components is the mating surface. The bolt tightening methods will affect the stress and deformation of mating surface which influences the accuracy and rigidity of machine tools. In the precision machinery industry, if the structure needs to tighten in line such as linear guideway, the senior engineers will tighten the bolts from sides to the middle or middle to sides instead of tightening in order. Furthermore, engineers use two-step of tightening rather than one-step of tightening. Based on their experience, these tightening methods will reduce the stress of mating surface and increase the rigidity of entire structure. In this study, the three bolts tightening model is used to investigate these tightening methods. Three bolts tightening CAD model is created by using the SolidWorks software. The finite element analysis is used the ANSYS workbench R19 software to simulate the bolt tightening methods (tightening sequences and pre-tightening force ratio) on the mating surface and entire model. From the simulation results, the minimum stress is observed in the tightening sequence from sides to middle and maximum stress is obtained in the tightening sequence in order. The experimental results of bolt tightening sequences match the simulation results. The stresses of mating surface and entire model drastically decrease when the tightening step is two-step of tightening. In two-step tightening process, the pre-tightening force ratio 1:1 is the optimal tightening methods for reducing the stress of mating surface compared to another pre-tightening force ratio.

The quality of low-rigidity cylindrical parts after straightening by transverse rolling with smooth plates is considered. To simulate the straightening process, the ANSYS Workbench software package is used. The calculation results demonstrate that the quality of cylindrical parts after straightening depends mainly on the relative reduction.

Data center can be considered as the heart of any large institution; it uses for a lot of purposes such as data transfer, data storage, data analysis, etc. The performed operations release huge amount of heat, which should be cooled down. Therefore, a huge amount of energy is required for this cooling process. This work aims to improve the cooling efficiency and consequently, decrease the energy consumption, which is required for a specific data center. The improvements have been achieved by introducing two modifications: modifying the locations of heat sources (hereinafter will refer as racks units) and cooling machines (hereinafter will refer to CRACS units), and the airflow distribution path; where the suggested arrangement is different than the standard one, and changing the location of the server fan compared to the standard one. As a first step, the quality of the numerical simulation of the suggested modifications should be evaluated. This assessment was done by testing the impact of the mesh size on the air velocity and temperature as the main parameters in the current analysis. CFD Numerical investigation is done using ANSYS 16. The geometry is created using AUTOCAD 18, then it is exported to ANSYS. The meshing is created using ANSYS workbench with taken into account several mesh refinement. It was found that the suggested modifications increase the cooling performance and reduces energy consumption

Steel structures are traditionally designed neglecting the in-plane bearing capacity of the cladding. However, the cladding can act in coordination with the main structure, behaving as a diaphragm and contributing to its spatial stability, enabling the so-called stressed skin concept design. The subject of this paper was an analysis of behaviour of a sample steel frame cladded with corrugated sheet metal, and connected to each other by self-tapping screws. Various conditions regarding the set and the number of fastening devices, as well as method of numerical modelling of fasteners, type of the corrugated sheet metal, and overall dimensions of the frame were analysed using FEM and ANSYS workbench software, including geometric and material nonlinearity. Results can serve as useful and reliable design guidelines, and as an argument for further propagation of the stressed skin concept design as a rational design approach for steel structures.

In recent years, educators and engineering students have become increasingly concerned with classroom teaching and learning, especially the challenges of improving teaching that are so important to the education of Engineers. One of the biggest challenges is getting students to try and experience hands-on activities quickly and easily understanding. Many universities rely on adequate infrastructure, laboratory availability, and minimum budget to make students experience this experience in practice. For Electrical Engineering students, these challenges are even greater when the use of practical and well-equipped laboratories is required, especially in activities with power systems and electric motors. This paper presents the development and design of a Didactic Workbench for Motor Protection (DWMP) that allows students to simulate different types of three-phase motor failures. In addition to simulating failures, the workbench performs different protection actions of these motors through an Intelligent Electronic Device (IED). Thus, it is expected to assist the student in the learning process to identify, interpret and act on faults and protection of electric motors.

The model of rotor vector (RV) reducer was established by 3D software, and was imported into ANSYS Workbench for transient dynamic analysis. The stress distribution diagram and total deformation diagram of the gear tooth surface during the meshing process of the cycloidal wheel and the pin wheel were obtained, and the stress distribution law of the cycloidal wheel in the process was also obtained. Comparing the calculation results of Hertz formula with the results of finite-element analysis showed that the deviation are smaller and within the allowable range, which provides the theoretical reference for the optimisation of the cycloidal wheel.

We systematically compared two coding approaches to generate training datasets for machine learning (ML): (i) a holistic approach based on learning progression levels and (ii) a dichotomous, analytic approach of multiple concepts in student reasoning, deconstructed from holistic rubrics. We evaluated four constructed response assessment items for undergraduate physiology, each targeting five levels of a developing flux learning progression in an ion context. Human-coded datasets were used to train two ML models: (i) an 8-classification algorithm ensemble implemented in the Constructed Response Classifier (CRC), and (ii) a single classification algorithm implemented in LightSide Researcher’s Workbench. Human coding agreement on approximately 700 student responses per item was high for both approaches with Cohen’s kappas ranging from 0.75 to 0.87 on holistic scoring and from 0.78 to 0.89 on analytic composite scoring. ML model performance varied across items and rubric type. For two items, training sets from both coding approaches produced similarly accurate ML models, with differences in Cohen’s kappa between machine and human scores of 0.002 and 0.041. For the other items, ML models trained with analytic coded responses and used for a composite score, achieved better performance as compared to using holistic scores for training, with increases in Cohen’s kappa of 0.043 and 0.117. These items used a more complex scenario involving movement of two ions. It may be that analytic coding is beneficial to unpacking this additional complexity.

Made available in DSpace on 2021-06-25T10:35:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-01-01 In predictive maintenance, vibration signal analyses are frequently used to diagnose reducer failures because these analyses contain information about the conditions of the mechanical components. Reducer vibration signals are very noisy and the signal-to-noise ratio is so low that extracting information from the signal components is complex, especially in practical situations. Therefore, signal processing techniques are used to solve this problem and facilitate the retrieval of information. In this work, the adopted technique included noise-canceling technique, synchronous temporal mean (TSA), and continuous Morlet wavelet transform (CWT), designed to extract resources and diagnose local gear damage. These techniques are used in measured signals in an experimental workbench consisting of the gear pair coupled to a motor and a generator. The experiment was monitored according to the conditions of a gear pair throughout its useful life. The continuous wavelet transforms accurately identified faults in the gear teeth, and it was possible to detect in which tooth the fault was occurring. Ppg in Mechanical Engineering Dem FEIS/UNESP Department of Mechanical Engineering Dem FEIS/UNESP Department of Mathematics Mat FEIS/UNESP Department of Biofuels Araçatuba Technology College Fatec Ppg in Mechanical Engineering Dem FEIS/UNESP Department of Mechanical Engineering Dem FEIS/UNESP Department of Mathematics Mat FEIS/UNESP

Heliostats are a kind of reflection devices in solar power tower plants, and are generally arranged in flat and open areas, with independent column structure. Because the angle needs to be adjusted continuously during the use, heliostats are subject to large wind load and their support structure is prone to wind-induced fatigue. In this work, a joint distribution model was established according to the law of heliostat tracking the sun and combining with the data on wind direction and wind speed at the local meteorological station. The mixed uniform design method was used to design the research conditions, and Ansys Workbench and nCode Design Life software were coupled to combine the finite element analysis with the wind tunnel test of the heliostat structure, so as to analyze the wind-induced fatigue of the heliostat support structure. The GBDT algorithm was adopted to fit the fatigue life in typical working condition, estimate its fatigue life and analyze the law. In this work, the fatigue analysis of the heliostat support structure was conducted through a combination of mixed uniform design and finite element analysis, so as to reduce the test conditions, improve the test efficiency and estimate the fatigue life, and provide a basis for engineering design.

Background: As a key component of the rail transit vehicle, the railway bogie greatly affects the dynamic performance, reliability, and safety of the high-speed rail vehicle. In this paper, the structural strength of a typical trailer bogie frame is evaluated and its strength and dynamic requirements are verified. In addition, various patents on bogie structural strength have also been discussed in this paper. Objective: The study aimed to evaluate and verify the rationality of the bogie frame structure design with static strength and dynamic characteristics. Methods: A three-dimensional model of the trailer bogie frame was built by CATIA V5, and then, a finite element model of the frame was analyzed by ANSYS Workbench. Bogie frame loads, static strengths and dynamic characteristics of the frame under different conditions (straight, curve, braking and abnormal) were calculated based on its strength and design standards. Results: According to the requirement stress and dynamics standard, the maximum stress of the bogie frame was observed to be in the allowable stress value of the frame material, and the dynamic performance of the bogie model meets the design standards. Conclusion: The structural strength of the proposed bogie frame is reasonable, and the static strength and dynamic characteristics of the proposed bogie model are in accordance with the design requirements of the railway vehicle.

This article is part of a longer research-analytical work because it outlines the results and conclusions of the study according to the main topic of the research and the applied method. The central theme of the research is the dynamic stiffness of machine tools and the various methods for their determination. Following analytical analysis the machine tool natural frequencies were determined using a finite element software (ANSYS Workbench R19.1), which we now approach from a practical point of view, that is determined in the workshop by measurements. The results obtained are compared for each of the three methods.

Background: The subject of this research is the creation of an optimal school bench design with the aim of determining the most favorable posture of students while sitting, taking into account the relevant ergonometric and biomechanical characteristics of the human body. For the proposed model of the school bench which allows adjusting the different slopes of its surface, the corresponding computer model of the student and the table was first created, and then biomechanical and RULA analysis was performed in order to determine the maximum load in the lumbar part. Next, for each test subject of given weight, it was necessary to determine the amount of maximum load in lumbar zone L3/L4 for different slope angles and to determine the critical angles at which the maximum permissible load of 3400 N is reached. Methods: The analysis is performed on a total of 5 subjects of the same height (180 cm) and various weights (60, 70, 80, 90, 100 kg). The task is to determine at which weight and at what angle of the workbench with standard height will not exceed the permissible loads of the spine, specifically referring to the L4/L5 vertebrae whose stresses should not exceed 3400 N. The CATIA software package (Dassault Systèmes, Vélizy-Villacoublay, France) is used for the analysis. By knowing the anthropometric and work environment data with ergonomic design and analysis, the following analyzes were made: biomechanical analysis, rapid upper limb assessment (RULA) and carry analysis (an option from CATIA software). Results: The proposed school bench design allows for flexible adjustments to its worktop, that is, changing its tilt. This allows students of different body masses to have an optimal position at work that does not compromise their maximum permissible load in the L4/L5 spinal column (3400N). Conclusions: The proposed ergonomic design of the desk will result in students being adequately positioned during their activities at school with the minimal risk of permanent deviations and other health problems.

A simulation verification of the hybrid propulsion ship considering accurate electro-dynamic model is required to evaluate ship maneuverability before the maritime demonstration. This paper presents the simplified model constructions for the hybrid propulsion ship using a real time simulator in terms of the dynamic models accuracy and the improvement of a computation speed. In addition, the hardware in the loop simulator based on a laboratory virtual instrument engineering workbench using the ship dynamic model and the developed equipment is proposed to evaluate the electro dynamic characteristics of hybrid propulsion ship. The validity of a proposed model on a hardware in the loop simulator is verified by simulation compared with a detailed model on an electronic circuit simulation software.

Steel frame structures are traditionally designed with bracings that stabilize the main bearing structure. Another approach is to apply the “stressed skin design” where the cladding structure takes the role of the bracings. In this research, the two approaches were analysed and compared in order to find advantages of any. A typical steel frame structure was chosen, and for the cladding, trapezoidal sheet metal was selected. Optional bracings were also considered. All static analyses were done using the finite element method (FEM) and ANSYS Workbench software, including geometric and material nonlinearity. The structure was loaded perpendicularly to its gable, thus simulating typical wind action. Number of fasteners connecting the cladding and the frame is crucial for the “stressed skin design” concept, so this parameter was varied through the analysis. The stiffness of the fastener devices was simulated in two ways: (1) simplified, by merging of the adjacent nodes of the cladding and the frame, and (2) more accurately, using special joint elements with prescribed stiffness. Obtained stresses and deformations were compared, and they showed obvious advantages of the “stressed skin design” over braced frame design, both in structural, and in economical aspect. In addition, important practical guidelines for the “stressed skin design” using FEM were proposed.

The injector body is an important component of the injector. In order to ensure the reliable operation, the finite element analysis made in ANSYS Workbench is used to simulate and analyze the stress and the fatigue strength of the injector body provided that the fuel loads and unloads instantly. The analysis shows that the stress concentrations of the injector body exist at the entrances of the split ports. It is found that the stress can be reduced, and the fatigue strength of the injector body can be increased by rounding. Finally, the relationships between the fillet radius and the stress concentration and fatigue strength are obtained. Ensure the fatigue strength of the injector body meets the requirement.