| Summary: | 碩士 === 國立臺北科技大學 === 車輛工程系所 === 98 === Systematic vehicle design is the trend. Effectively designing a vehicle with required performance, less cost, faster turn-around time, and shorter design cycle is the key to success. Utilizing computer aided engineering could improve and shorten the design process, time and cost. This paper focused on a vehicle seat design. Using HYPEWORK tools, designed, analyzed and optimized the seat main structure with light weight, but also meeting the functional requirements.
The purpose of this research is to propose a systematic design process for a vehicle seat structure. In the study, a Computer Aided Design tool, Solid Works, was used to create the 3-D models, a analysis tool, HyperWorks/Radioss, for analyses, and HyperWorks/HyperStudy for optimization. In the design process, the seat back strength, lateral rigidity, torsion rigidity, seat back strength with luggage loads, and seat back impact were considered. The seat impact requirements are based on the United Nations Economic Commission for European ECE-R17 regulation. In the study, a topology optimization was performed to get the initial structure layout. And then both the gage and shape optimization were perform to reduce the structure weight, where the structure panel gages and tube diameter were the design variables. A Latin Hyper Cube matrix and Adaptive Response Surface Method were used to approximate the performance andused for the prediction in the optimization process. Through analysis of the length of time it takes to get a better mesh size.
In the study, several seat designs were proposed and mush size quantization. The proposed design process and optimization methods demonstrated their effectiveness. It helped in the design, and weight savings. This method could be used for the practical industrial designs and applications.
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