Search

Interior design is the science and art of enhancing the interior of a space in order to achieve a more aesthetically pleasing and functional environment. Furniture as an important element of space decoration can be ready-made or custom-made (goal - maximal use of space). Kitchen design requires many elements disposition rules to be respected in order to get functional space. Therefor interior designer has to spend time on solving this functionality problems and have less time for creative aesthetic work. We developed an algorithm for automatic I-shape kitchen organization on the basis of available kitchen dimensions. This algorithm automatically generates kitchen disposition and makes a parametric 3D model. Developed algorithm is implemented and tested using SketchUp dynamic components.

The aim of this paper is to solve the problem of extremely difficult, low work efficiency and low accuracy of finite element analysis (FEA) when considering the bond-slip performance of recycled aggregate concrete filled circular steel tube (RACFCST). Toward this end, spring elements generation software for RACFCST V1.0, parametric modeling software for push-out test of RACFCST V1.0, and the Nodes selection program for RACFCST were developed. The FEA model of the RACFCST push-out test was established with the software and the model was calculated in ABAQUS, the calculated results were compared with the existing test results. The results show that: (1) The FEA model of RACFCST components considering bond-slip can be efficiently, accurately and simply established by spring elements generation software for RACFCST V1.0; (2) The results of FEA were found to be in good agreement with the experimental data, and spring elements generation software can solve the problem of FEA of RACFCST considering bond-slip performance; (3) The modeling efficiency and accuracy of RACFCST components can be greatly improved by Parametric modeling software for push-out test of RACFCST V1.0; (4) The efficiency and flexibility of selecting nodes during post-processing is greatly improved by Nodes selection program for RACFCST V1.0. [ABSTRACT FROM AUTHOR]

Interior design is the science and art of enhancing the interior of a space in order to achieve a more aesthetically pleasing and functional environment. Furniture as an important element of space decoration can be ready-made or custom-made (goal - maximal use of space). Kitchen design requires many elements disposition rules to be respected in order to get functional space. Therefor interior designer has to spend time on solving this functionality problems and have less time for creative aesthetic work. We developed an algorithm for automatic I-shape kitchen organization on the basis of available kitchen dimensions. This algorithm automatically generates kitchen disposition and makes a parametric 3D model. Developed algorithm is implemented and tested using SketchUp dynamic components. [ABSTRACT FROM AUTHOR]

In this paper, an analysis of three Serbian medieval Raška churches highlights the significance of the interaction of regular geometric shapes in the composition of their underlying proportional scheme. The complex geometry recognised in the layouts and cross-sections of these monastery churches points to the potential use of a unique triangular proportioning system. This proportional system is derived from the initial geometry of Štambuk's proportional canon, which employs two circles constrained by an equilateral triangle in a specific setting. As the essence of religious medieval structures is often related to their interior, in this paper 3D "empty space moulds" are created by the parametric modelling of each element of the structure. This research shows how the variation of the two critical points of the church interior, the centres of the dome and of the main apse, along with the key triangles incorporated in the proportional scheme, affect the final 3D structural model. [ABSTRACT FROM AUTHOR]

Abstract The identification of techno-economically feasible decarbonisation paths and sustainability transitions for the built environment is a necessary task for research today and building stock renovation processes can act in synergy with innovative economic and technological development paradigms to achieve different types of benefits such as economic growth and employment, together with resource efficiency and sustainability for the whole sector. The research presented aims at selecting the most relevant data analysis processes and techniques to respond to practical technical questions and to support decision-making in the built environment, at multiple scales of analysis, from individual buildings, to building stock and urban environment. The research aims to indicate in this way the possibility to join the micro-scale view, involving technological and behavioral issues in buildings, and the macro-scale view, involving strategic problems at market and policy levels for energy and sustainability planning. Further, the combined use of modelling techniques with large scale data acquisition and processing could guarantee multiple feed-backs from measured data, useful for the evolution, first of all, of design and operation practices in building but also, more in general, of the whole value chain of the sector. A synthesis and integration of modelling methodologies is presented through case studies, showing a path to improve transparency of performance assessment across building life cycle phases. Finally, multivariate data visualization techniques are presented to ease wider applicability of the described numerical techniques. [ABSTRACT FROM AUTHOR]

Abstract Efficient buildings are an essential component of sustainability and energy transitions, which represent today a techno-economic and socio-economic problem. New paradigms are emerging both for new and existing buildings (e.g. NZEBs) and passive design strategies are becoming increasingly common. However, the adoption of these strategies in mild climates has to be carefully evaluated to prevent overheating in intermediate seasons and increasing cooling loads in summer, considering also climate change scenarios. Additionally, optimistic assumptions about building technology performance are often considered and the variability of occupant comfort preferences and behaviour is generally neglected in the design phase. The research presented aims at verifying the suitability of a simple, robust and scalable calibration approach (based on multivariate linear regression) to link design and operational performance analysis transparently, using a Passive House case study building. First, the original baseline design configuration is compared with a larger spectrum of data generated by means of parametric simulation, following a Design of Experiment (DOE) approach. After that, regression models are trained first on simulation data and then progressively calibrated on measured data during a three year monitoring period. The two fundamental objectives are evaluating the robustness of design phase performance analysis through parametric simulation (i.e. detecting potentially critical assumptions) and maintaining a continuity with operation phase performance analysis (i.e. exploiting the feed-back from measured data). Highlights • Buildings are a relevant element in sustainability transition policies. • Rigorous schemes for energy efficiency are important tools for designers. • Robustness of performance estimates has to be considered in design phase. • Design and operational performance analysis have to be linked transparently. • Automated model calibration is necessary to ensure long-term performance monitoring. [ABSTRACT FROM AUTHOR]

• A novel strategy for masonry arch bridges and viaducts model generation is developed. • A versatile strategy for masonry bond generation is presented and tested. • An efficient approach at modelling existing damage is suggested and utilised. • Hierarchically partitioned models have higher computational efficiency. • Overcomplication of hierarchic structure may lead to loss in performance. Detailed modelling of masonry arch bridges and viaducts presents unique computational challenges. Not only do such structures exhibit complex nonlinear behaviour, but they are also difficult to describe within a consistent computational framework for high-fidelity simulations, due to the range of interactive components with varying geometric characteristics. This paper presents a novel parametric model design tool for the generation of detailed 3D FE meshes of realistic masonry arch bridges and viaducts. This tool has been developed according to a modular description as an add-on component within the Rhino – Grasshopper environment. It allows for modular complex bridge assemblages with independent definition of the key viaduct parts, including arch barrels, spandrel walls, piers as well as multi-layered fill. Moreover, new parts can be seamlessly introduced into the framework due to its modular nature. Notably, as all components are geometrically addressable, it is possible to further enhance the model generation tool by adding non-standard routines to create more complex geometry than that allowed by the current parametric definition. Importantly, the developed strategy enables variable fidelity model generation, where different segments of an analysed viaduct can be represented by meso‑ and/or macro-scale masonry descriptions at different levels of detail. This approach further enables the consideration of initial damage in the brick/blockwork, which is a very common feature of many existing masonry bridges and viaducts. [ABSTRACT FROM AUTHOR]

• The blade structural reconstruction considering machining errors was achieved by parametric modeling method. • The fluid-thermal-solid sequential coupling method was used to analyze the cyclic life of reusable turbine rotor blisk. • The effect of machining error ranges on the reliability for turbine blisk was investigated. • During the reliability analysis, uncertainty factors were considered and ranked for sensitivity. As a critical component of reusable rocket engines (RRE), the cyclic life of the turbine rotor blisk often varies due to uncertainties such as machining errors and other factors. However, considering the difficulty of structural reconstruction and the large number of parameters related to the blade configuration, few studies have considered the blade configuration variation due to machining errors in the reliability analysis process. To investigate the influence of factors in reliability analysis, a reliability analysis framework is established by combining parametric modelling methods with finite element analysis methods under fluid-thermal-solid sequential coupling. The influence of blade lattice changes due to machining errors on the reliability of turbine rotor blisks in reusable rocket engines (RRE) is investigated. The effects of machining errors, material, and load variability on the cyclic life reliability of rotor blisks are effectively quantified. With the suggested method, a reliability analysis is conducted for an RRE turbine rotor blisk, and the effect of the machining error range on the analysis results is investigated. It is found that the tolerance level to meet the high reliability requirements is at least medium for the basic cyclic life requirements of the model. In terms of cyclic life reliability, the more influential random factors are blade axial chord, low-cycle fatigue plasticity coefficient, and low-cycle fatigue ductility coefficient, with sensitivity factors of 29.09%, 24.4% and 22.13%, respectively. This study provides an efficient and reliable modelling method for the reliability analysis of reusable turbine rotor blisks based on machining errors, investigates the influence of the range of machining errors, quantifies the ability of the random factors to influence, and provides valuable insights and recommendations for the reliability design and optimization of reusable turbine blisks. [ABSTRACT FROM AUTHOR]

After the economic crisis and the BASEL agreement, the bankruptcy prediction research has evolved substantially due to its importance in corporate finance. This paper summarizes the short history of bankruptcy prediction from the beginning until quite recently. First, it presents a short summary of bankruptcy prediction evolution pointing to the most used models. Then, it provides a summary of the most cited papers that discuss the evolution of bankruptcy prediction and of those papers that have contributed to bankruptcy prediction. Finally, it summarizes some critiques about bankruptcy prediction that the literature has formulated over time and provides some suggestions for future research on bankruptcy prediction.

Building Information Modelling (BIM) is a globally adapted methodology by government organisations and builders who conceive the integration of the organisation, planning, development and the digital construction model into a single project. In the case of a heritage building, the Historic Building Information Modelling (HBIM) approach is able to cover the comprehensive restoration of the building. In contrast to BIM applied to new buildings, HBIM can address different models which represent either periods of historical interpretation, restoration phases or records of heritage assets over time. Great efforts are currently being made to automatically reconstitute the geometry of cultural heritage elements from data acquisition techniques such as Terrestrial Laser Scanning (TLS) or Structure From Motion (SfM) into BIM (Scan-to-BIM). Hence, this work advances on the parametric modelling from remote sensing point cloud data, which is carried out under the Rhino+Grasshopper-ArchiCAD combination. This workflow enables the automatic conversion of TLS and SFM point cloud data into textured 3D meshes and thus BIM objects to be included in the HBIM project. The accuracy assessment of this workflow yields a standard deviation value of 68.28 pixels, which is lower than other author’s precision but suffices for the automatic HBIM of the case study in this research.

High efficiency paradigms and rigorous normative standards for new and existing buildings are fundamental components of sustainability and energy transitions strategies today. However, optimistic assumptions and simplifications are often considered in the design phase and, even when detailed simulation tools are used, the validation of simulation results remains an issue. Further, empirical evidences indicate that the gap between predicted and measured performance can be quite large owing to different types of errors made in the building life cycle phases. Consequently, the discrepancy between a priori performance assessment and a posteriori measured performance can hinder the development and diffusion of energy efficiency practices, especially considering the investment risk. The approach proposed in the research is rooted on the integration of parametric simulation techniques, adopted in the design phase, and inverse modelling techniques applied in Measurement and Verification (M&V) practice, i.e., model calibration, in the operation phase. The research focuses on the analysis of these technical aspects for a Passive House case study, showing an efficient and transparent way to link design and operation performance analysis, reducing effort in modelling and monitoring. The approach can be used to detect and highlight the impact of critical assumptions in the design phase as well as to guarantee the robustness of energy performance management in the operational phase, providing parametric performance boundaries to ease monitoring process and identification of insights in a simple, robust and scalable way.

Digital tools for design process, nowadays extensively popular, opened enormous operational possibilities, not only for technical practices, but also to collaborative and participatory design. Through these technological innovations, from urban planning and environmental design applications to the practice of architecture, exploration of alternative solutions is potentially faster being also potentially effective and easier understand and assess processes.In order to create more effective design workflows at different scales, this capability requires the definition and the implementation of interoperability (not limited to setting formats!) that optimizes the integration of information among the various project sectors.Within this framework of co-design it is expected to highlight not only research and practice related to building at different scales (environmental and urban process), but also to focus on the specific character of drawing applications, which should be able to present an understandable "communicative interface" for everyone involved.DOI: https://doi.org/10.20365/disegnarecon.20.2018.ed

This study aimed to consider the field of energy saving in architectural design utilizing computer analysis and calculation. In this analysis, architecture design with an approach to optimizing energy consumption in the design of individual units, complex plan sites, and apartment sets using a computer was studied. Parameters affecting this research include the geometry of units, the arrangement and location relationship of buildings, and the form and height of apartment units. Different plans were produced by utilizing the initial plan of the designer and changing some aspects of it approved by the architectural design using the parametric modeling technique. Utilizing similar logic and a shift in the arrangement of buildings on the site, a variety of options were produced. By selecting existing and pre-designed plans, the optimal form was produced by computer. After computer-simulating each option, the energy analysis process was started for each building design. In the optimization process for each of the three designs, a genetic algorithm was used to achieve the optimal solution. After accomplishing the various stages of optimization, the final option compared with the initial design had reductions in energy consumption of 21% in plan design, 2% in site plan design, and 26% in apartment units form design. It should be noted that the processes of simulation and optimization were performed in the context of a continuous algorithm and by utilizing parametric tools that reduced the duration of this process.

Advancements in the computing realm have assisted the Architecture, Engineering, and Construction (AEC) industry to progress significantly by automating several design tasks and activities. Building Information Modelling (BIM) authoring tools have played a significant role in automating design tasks and reducing the efforts required by the designer in redundant, repetitive or production-oriented activities. This paper explores one such approach that, with the help of BIM authoring tool and its Application Programming Interface (API), reduces the efforts expended on formwork design for concrete structures. The paper utilises the concept of using BIM data as input to compute the quantity of formwork, and generate visualisations and schedule of formwork. The developed approach first takes data input from semantic BIM to the API environment for computation and design of formwork systems, which is then placed within the BIM model, to generate visualisation and prepare schedules. The research work utilises a structural concrete wall as an example to demonstrate the presented approach. The approach will be influential in streamlining the formwork design process in the BIM environment and reducing efforts required by the designer and the planning engineer. Since the formwork elements are generated as 3-Dimensional (3D) solids and smart BIM elements, the generated model of formwork can be used for resolving clashes, scheduling, and resource planning.

The design of child restraints is guided in part by anthropometric data describing the distributions of body dimensions of children. However, three-dimensional body shape data have not been available for children younger than three years of age. This study presents body shape models for children weighing 9-23 kg in a seated posture relevant to child restraint design. A laboratory study collected surface geometry data of 67 children, ages 12-58 months. Novel template fitting methods were employed to obtain homologous meshes and to standardize the posture. Principal component analysis and regression were used to develop a statistical body shape model (SBSM). The SBSM was exercised to create 18 manikins representing children aged 1-3 years, with varying size and shape. These manikins will be useful for assessing child accommodation in restraints. The SBSM can also provide guidance for the development of anthropomorphic test devices and computational models of child occupants. [ABSTRACT FROM AUTHOR]

Designing one seat for multi-sitters and multi-activities is challenging especially in a very restrained aircraft economy class cabin. In this paper, the effects of seat parameters and sitters' anthropometric dimensions on seat profile and optimal compressed seat pan surface were studied using a newly built multi-adjustable experimental seat. The 'optimal' seat pan contact surface was obtained by controlling the height of 52 cylinders so that the normal contact force was distributed to all cylinders as evenly as possible. With 13 other motorized adjustments controllable by a computer, individual seat profile in the symmetry plane such as seat height, seat pan length, seat pan angle, lumbar protrusion and headrest position were also studied. Data were collected from 36 men and women of varying body size testing 40 seat configurations. Parametric models were obtained for predicting seat profile and optimal compressed seat pan seat surface in function of seat pan and back rest angles for two sitting postures. It is expected that the proposed parametric models provide necessary reference values in seat development for a better fit of a target population of sitters with large varying body size. [ABSTRACT FROM AUTHOR]

This paper aims to accurately simulate straight bevel gear transmission, and analyse its exact meshing performance. To this end, the equations for tooth surface, tooth root surface and tooth root transition surface of straight bevel gear were derived based on the gear planning principle. Then, the parametric finite-element modelling of straight bevel gear transmission was realized in ANSYS using surface interpolation technique, and the gear pair meshing was simulated by transient analysis. The tooth surface contact stress and the bending stress were obtained throughout the meshing process. Later, the proposed model was contrasted with three traditional models to verify its feasibility. The results show that the modelling accuracy directly bears on the gear strength, and both the contact stress and the bending stress of the gear varied with the meshing position. The proposed method eliminates the huge errors of the traditional equivalent gear design, and pioneers in the analysis of the meshing features of gear pair. Suffice it to say that this research lays the basis for the accurate design and optimization of straight bevel gear transmission. [ABSTRACT FROM AUTHOR]

The present paper analyses the Abbey of S. Matteo in Genoa exemplifying a possible use of survey and its elaborations in the field of conservation. The three-dimensional survey was used as the basis for the collection, management and representation of the data derived from the survey on rising damp. The purpose was to test a dynamic data processing system that could be used as a tool to collect data on site as well as to access data remotely. By using software for three-dimensional representation and a node programming language, it was possible to define a system that offered dynamic viewing and was easy to use, through the use of chromatic scales and level curves, which can be generated starting from tables containing numerical data. Surveying, diagnostics, modelling and representation allow one to experiment with new ways of interaction within the common goal of conservation. [ABSTRACT FROM AUTHOR]

This study aimed to consider the field of energy saving in architectural design utilizing computer analysis and calculation. In this analysis, architecture design with an approach to optimizing energy consumption in the design of individual units, complex plan sites, and apartment sets using a computer was studied. Parameters affecting this research include the geometry of units, the arrangement and location relationship of buildings, and the form and height of apartment units. Different plans were produced by utilizing the initial plan of the designer and changing some aspects of it approved by the architectural design using the parametric modeling technique. Utilizing similar logic and a shift in the arrangement of buildings on the site, a variety of options were produced. By selecting existing and pre-designed plans, the optimal form was produced by computer. After computer-simulating each option, the energy analysis process was started for each building design. In the optimization process for each of the three designs, a genetic algorithm was used to achieve the optimal solution. After accomplishing the various stages of optimization, the final option compared with the initial design had reductions in energy consumption of 21% in plan design, 2% in site plan design, and 26% in apartment units form design. It should be noted that the processes of simulation and optimization were performed in the context of a continuous algorithm and by utilizing parametric tools that reduced the duration of this process. [ABSTRACT FROM AUTHOR]

This paper reports on the development and fabrication of precast bridge piers with unique creative shapes and more accurate geometry control methods using building information modelling, a new form of information processing and collaboration in which data are embedded within 3D models. Panelized formworks were created by digital fabrication from the 3D design models and attached to common steel formworks. During fabrication of precast segments, key parameters for geometry control were captured by laser scanning. The design models from the algorithm modelling were compared to fabrication models to provide error adjustment during assembly. Before assembly of the segments at a construction site, instructions for geometry control were provided to ensure the final target geometry of the bridge piers. Information delivery from design to maintenance can be achieved by 3D information models and a new format for drawings that includes QR codes and 3D models. [ABSTRACT FROM AUTHOR]

Additive Manufacturing technologies are particularly suitable for developing highly customised products, even in rehabilitation and occupational therapy fields. Nowadays it is easy and cheap to design and produce such artefacts, although they require systematic approaches and standardized tests to validate their effectiveness. Therefore, this paper proposes a methodological approach for the application of Additive Manufacturing technologies to the codesign of assistive devices, focusing on rheumatoid or scleroderma patients. These patients present hand and finger disorders that limit simple everyday tasks, and need assistive devices to protect the damaged joints. The commercial assistive devices available on the market generally lack of customisation in dimensions and morphology, or their aspect is too stigmatizing. In order to achieve a better correspondence between patients' needs and assistive devices, we propose to involve the patients in a co-design team, in order to directly transfer their desires and creativity in unconventional solutions. The assistive devices are parametrically modelled and virtually prototyped in order to assess their functionality and customisation, and then additively manufactured. Finally, their effectiveness is tested by patients by means of standardized assessment tests that generate useful feedback. The paper proposes a case study about an assistive device for daily living activities. [ABSTRACT FROM AUTHOR]

Classical techniques such as simple and multiple parametric regression analyses assume the linearity of the relationship between the response and independent variables. Moreover, these classical techniques rely on the rigid assumptions of constant variance and the independent and identical distributions of the error terms. Consequently, a consideration of a more flexible approach can greatly influence the accuracy of our analysis. The objectives of this study are to evaluate and suggest an alternative approach to the classical parametric methods. The stem radius data obtained from Sappi landholdings in eastern South Africa were used. Stem radius of two hybrid clones, namely Eucalyptus grandis × Eucalyptus urophylla and E. grandis × E. Camaldulensis clone was used as the response variable. Additive mixed effects model that incorporates a non-parametric smooth function is used. Different additive mixed models were fitted to show the functional relationship between stem radius and tree age. The relationship between stem radius and tree age depends on clone and season. This study suggests semi-parametric approach as an alternative to the usual parametric approaches especially when the functional relationship between the response and the covariate is not known. [ABSTRACT FROM AUTHOR]

The optimum bow shape for an ice-going vessel in ice conditions is different to open water conditions and research about the influence of the bow shape on the structural response due to ice loading and resistance is required. A framework is developed to study the functional relationship between the bow shape and the structural response for ice-going bows in MATLAB. The structural dimensions are optimised by an automatic link to a parametric finite element model in ANSYS Mechanical. Both the buttock angle and the average waterline angle should be as small as possible to reduce the channel ice resistance. When changing the bow shape angles along an iso-resistance curve, the design pressure is constant and thus the structural response according to the DNVGL rules. It is found that the maximum stress in plates of the bow increases by reducing the average waterline angle while keeping the structural design constant. [ABSTRACT FROM AUTHOR]

This paper is concerned with developing an adaptive structure that can offer morphologically flexible, structurally effective and architecturally viable solution. For this purpose, a multi-hypar structure serving as an adaptive roof for exhibition pavilions is proposed. In the first part of the paper, geometric design principles of the multi-hypar surface created by ruled surface generation method is analysed. In order to investigate the morphology of multi-hypar, a parametric model is built. In the second part, the proposed multi-hypar structure is introduced which provides a variety of geometric configurations for changing conditions. Its structural mechanism and transformation capability are presented as well. In the last part, a set of structural analysis is carried out to examine the feasibility of the proposed structure at different geometric configurations. The result obtained with the analysis demonstrates that planar configuration of the structure has the least efficient structural shape among the others, but the structure fulfils the strength and stiffness criteria in all configurations. [ABSTRACT FROM AUTHOR]

This paper deals with the use of reciprocal frames in temporary gridshell structures, such as architectural pavilions in expositions and installations. These architectural examples can benefit from the use of short, easy to handle, generally joint-free, and repeatable 'modules' in order to create particular self-supporting structures. The lightweight and interwoven grid obtained by connecting short elements according to the reciprocity principle is structurally efficient and, at the same time, aesthetically pleasing, mainly due to the resulting tessellation. The paper firstly investigates the connection between efficiency and aesthetics. The last part of the paper investigates some temporary architectural pavilions from both an aesthetical and parametric point of view. In order to deepen our understanding of these structures, they are re-modelled according to a bottom-up approach by means of a constraint-based parametric CAD modeller. In this way, a reciprocal frame can be explored and modified by the parametric arrangement of its generative elements, which, like a natural organism, grows in self-generating forms. [ABSTRACT FROM AUTHOR]

• Parametric modelling and EMT simulation of autotransformer energization. • Determination of influential parameters on inrush current. • Determination of optimal differential protection settings. • Probability of false relay operation is calculated based on parametric simulations. One of the main causes for incorrect operation of the transformer relay protection are inrush currents. The transient inrush currents occur when energizing the unloaded transformer, and it is a consequence of the transformer core saturation. This paper presents an analysis of transients caused by energization of three-phase autotransformer 300 MVA, with rated voltages 400/115/10.5 kV. Using the EMT software with parametric toolbox, a large number of simulations is performed to show the impact of model parameters on the amplitude and duration of inrush currents as well as the probability of differential current 2nd harmonic amplitude occurrence. Based on the simulation results, the optimal differential protection settings are determined, and the probability of a false relay protection operation is determined. [ABSTRACT FROM AUTHOR]

• A novel concept of "parameterization" is proposed for the vibration signal of the high-speed gear transmission system. • A novel PROM method of the vibration signal of the complex gear transmission system is given. • The p-PR parametric model of the gear transmission system is established based on the PROM. • The maximum error between experimental results and p-PR prediction is 7.8%. In the process of dynamic modelling and vibration response simulation for the high-speed gear transmission system, complex structures with a high degree of freedom (DOF) often lead to very large calculation errors, especially under conditions with unpredictable internal and external excitations. In this paper, a novel parametric probabilistic regression (p-PR) model based on data-driven and parametric modelling theories are proposed for the vibration signals of the high-speed gear transmission system. Based on the proper orthogonal decomposition (POD) method, the dataset of vibration signals is constructed, and a new truncated parametric reduced-order model (PROM) of the dataset is given for the gear vibration, with the truncated modes and corresponding coefficient vectors obtained. Through training the PROM and operating parameters using probabilistic regression, maximum likelihood estimation, and the parametric mode reconstruction, the p-PR model of vibration data for the gear transmission system is established. To validate the parametric modelling theories and the p-PR model, a bevel gear transmission experimental rig and a vibration signal test system are built, and the constant-speed test (CST) experiment and speed-up frequency sweep (SUFS) experiment are conducted. Based on the results of the CST experiment, the p-PR model for the experimental system is established and compared with the SUFS results. Results show that the p-PR model can accurately predict the vibration signals in both the time-domain and the frequency-domain, and the maximum predictive error for the experiment is 7.8%, which validates the accuracy and feasibility of the proposed theories and methods. [Display omitted] [ABSTRACT FROM AUTHOR]

Information technology is becoming a strong tool in different industries, including construction. The recent trend of buildings designing is leading up to creation of the most comprehensive virtual building model (Building Information Model) in order to solve all the problems relating to the project as early as in the designing phase. Building information modelling is a new way of approaching to the design of building projects documentation. Currently, the building site layout as a part of the building design documents has a very little support in the BIM environment. Recently, the research of designing the construction process conditions has centred on improvement of general practice in planning and on new approaches to construction site layout planning. The state of art in field of designing the construction process conditions indicated an unexplored problem related to connection of knowledge system with construction site facilities (CSF) layout through interactive modelling. The goal of the paper is to present the methodology for execution of 3D construction site facility allocation model (3D CSF-IAM), based on principles of parametric and interactive modelling.

This paper reports on the design and control of a responsive envelope based on the rotation of tessellated components. The study investigates responsive and dynamic approaches for building facades and envelopes to regulate solar shading, light control, views and thermal gain within the building. It is well known that near real-time visual output from computational simulation can significantly impact the prediction of dynamic building-environment interactions and lead to the development of smart, adaptable, net zero energy buildings. To address these motivations, this paper reports the development of an experimental simulation of a responsive envelope based on using a 4-fold penttile scheme. The simulation is developed using a novel pentagonal approach involving component (tile) design, tessellation and control methods. The paper further elaborates on the geometry and control aspects of the facade subdivision and presents the results of applying this tessellation geometry to a building envelope shading study based on facade components with rotation. Finally, it tests the “responsiveness” to multiple performance metrics by applying a non-deterministic exploration method for the stochastic rotation of individual panels. The sophisticated evaluation of alternative envelope configurations for a set of performance criteria require a tighter computational coupling between modelling and control of dynamic geometry.