6 results
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2. An empirical study on solving an integrated production and distribution problem with a hybrid strategy.
- Author
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Li, Feng, Zhou, Li, Xu, Guangshu, Lu, Hui, Wang, Kai, and Tsai, Sang-Bing
- Subjects
INDUSTRIAL districts ,GENETIC algorithms ,FUZZY logic ,LABOR economics ,COMPUTER simulation - Abstract
Coordination is essential for improving supply chain performance, and one of the most critical factors in achieving the coordination of a supply chain is the integrated research of production and distribution. In this paper, a novel two-stage hybrid solution methodology is proposed. In the first stage, products are processed on the serial machines of multiple manufacturers located in two industrial parks. A fuzzy multi-objective scheduling optimization is performed using a modified non-dominated sorting genetic algorithm II (NSGA-II). The result obtained in the first stage is used in the second stage to optimize the distribution scheduling problem using a modified genetic annealing algorithm (GAA). Finally, simulation results verify both the feasibility and efficiency of the proposed solution methodology. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
3. On the Design of the Manifold for a Race Car.
- Author
-
Hall, Bevan, Wheatley, Greg, and Zaeimi, Mohammad
- Subjects
RACING automobiles ,COMPUTATIONAL fluid dynamics ,AIR filters ,FINITE element method ,PRODUCTION engineering ,COMPUTER simulation - Abstract
This paper involves the design and construction of the intake manifold system of the FSAE car including the air shroud, air filter, throttle body, restrictor plenum, fuel injectors, fuel rail and runners. To ensure the quality, the proposed system is designed based on the FSAE rules. The design process of the intake manifold system will consist of the usual engineering processes including computer modelling, Finite Element Analysis and finally Computational Fluid Dynamics testing in order to determine the validity of the model and to tune the design in order to obtain the optimum performance out of the intake manifold system as a whole. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
4. DETERMINATION OF OPTIMAL PRODUCTION PROCESS USING SCHEDULING AND SIMULATION SOFTWARE.
- Author
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Duplakova, D., Teliskova, M., Duplak, J., Torok, J., 3Hatala, M., Steranka, J., and Radchenko, S.
- Subjects
SIMULATION methods & models ,PRODUCTION engineering ,COMPUTER simulation ,PRODUCTION planning ,SIMULATION software - Abstract
The objective of the article is to present the linking of simulation and planning software. The paper begins with a review of recent literature as well as description of the problem under investigation. Following from practical requirements, five decision-making rules were implemented to the production process. In the final part, the overall results to ensure time and economic efficiency of the production process are presented. The obtained results show that the best option is to apply the rule during which the first part to be machined is the one that first enters the production process to ensure minimum production time, maximum machine load and limit machine costs. By application of this rule, the total production time accounts for 524 seconds at the total cost of 7914.60 . The overall benefits of the research are being described in details in the final part of the article. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
5. Producing hollow shafts in a new horizontal mill by novel flat-knifing cross-wedge rolling with single guide.
- Author
-
Lin, Longfei, Wang, Baoyu, Shen, Jinxia, and Liu, Tao
- Subjects
TRANSPORTATION industry ,COMPUTER simulation ,MATHEMATICAL models ,PRODUCTION engineering ,ROLLING-mills - Abstract
To meet the requirement of lightweight, an increasing number of solid shafts are designed to be hollow in transportation industry. In this study, a novel method of flat-knifing cross-wedge rolling (FCWR) with single guide is proposed including a modified roller, a horizontal mill, and a single-guide structure, and its key problems are studied by numerical simulations and experimental tests. A mathematical model of FCWR roller is established, which reveals that the wedge length of rollers is effectively reduced by modifying knifing wedge from normalized roller. Furthermore, a horizontal multifunctional mill is invented and constructed to carry out the FCWR experiment with single guide. According to the results from the numerical simulations and corresponding experiments, it is observed that the typical defects of hole expansion and knifing groove are absolutely avoided because the improved flat-knifing wedge produces a radial force to shrink the inner hole and avoid the deformation concentration of the outer surface during knifing stage. Moreover, the single-guide rolling performed in the horizontal mill efficiently improves rolling stability because the workpiece is restricted into a smaller workspace. To the authors' knowledge, all these integrated improvements of FCWR roller, single-guide rolling, and horizontal mill are innovative, which are of great engineering significance to manufacture hollow shafts on account of the advantages of avoiding forming defect, reducing roller diameter, improving rolling stability, and simplifying mill structure. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
6. LEARNING THE PROCEDURE ON TAKT PRODUCTION OF TPS BY METHODS ENGINEERING AND SIMULATION.
- Author
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Takakuwa, S., Yang, W., and Nagatsuka, H.
- Subjects
PRODUCTION engineering ,SIMULATION methods & models ,COMPUTER simulation ,SYSTEMS engineering ,SYSTEMS theory - Abstract
A systematic procedure of experiments, performing simulation in conjunction with work measurement techniques, is introduced and aimed at undergraduate students in Industrial Engineering (IE) to learn a basic procedure for designing and implementing takt production in terms of the Toyota Production Systems (TPS). Students are split into small groups in a class. A series of experiments is designed and performed for an assembly line of magnetic contactors. Using the concept of the TPS, students perform work measurement studies including time study, process design, such as line balancing, and execute simulation experiments. At the end of the course, the teaching staff evaluates each group based on the performance of the simulation results. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
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