設計工学・システム部門講演会講演論文集
Online ISSN : 2424-3078
会議情報
2318 剛性を考慮した 3 次元 Body-In-White モデルの分割による部品生成
リュー ナエソン斉藤 万裕
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p. 347-350

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This paper presents an extension of our previous work on decomposition-based assembly synthesis, where the 3D FE model of a vehicle body-in-white (BIW) is optimally decomposed into a set of components considering the stiffness of the assembled structure under given loading conditions, and the manufacturability and assemblability of each component. The stiffness of the assembled structure is evaluated by finite element analyses, where spot-welded joints are modeled as linear torsional springs. Manufacturability of a component is estimated by using a cost estimation formula based on the size and complexity of components. Assuming assembly efforts are proportional to the total number of weld spots, assembleability is simply accounted for as the total rate of torsional springs. To allow close examination of the trade off among stiffness, manufacturability, and assemblability, the problem is solved by multi-objective genetic algorithm.
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© 2003 一般社団法人 日本機械学会
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