1514 複数性能の信頼性評価に基づく機械構造物の構想設計法(OS17 変動-バラツキを考慮した設計手法および設計例II)

概要

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Conceptual design support techniques are practically mandatory if the most efficient realization of optimal designs is desired. This paper presents a new topology optimization method that considers multiple reliability criteria to obtain, at the conceptual design phase, the most reliable designs of mechanical structures for both static and dynamic problems. This optimization method is constructed based on frame elements. For each frame element, a circular cross-section is assumed as the simplest case, and the normalized cross-section area is treated as design variable. As the multiple reliability criteria, the system reliability is evaluated by modeling the stiffness and eigen-frequency criteria as a series system. Finally, several numerical examples confirm the validity and utility of proposed method, and the importance of considering uncertainties is demonstrated by comparing with deterministic topology optimization.
一般社団法人日本機械学会の論文
2005-08-02