剛性,強度および重量を考慮した構造形状決定法

概要

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This paper proposes a novel approach to the determination of structural shapes that satisfy the requirement for high stiffness, lightweight and strength. In this method, a basic shape is derived in the first phase by the FEM-based topology optimization, and then, in the second phase the final shape is determined by the BEM-based fully stressed design. In the second phase, the shape is iteratively changed in such a way that the von Mises stress of all the material elements,σ_i, (x_i), lies within an allowable stress region defined as σ_<lower> <__= (x_i) <__= σ_<upper>. By making an appropriate choice of σ_<lower> and σ_<upper>, this algorithm allows us to derive a lightweight structural shape with high stiffness and enough strength. As an example, this method was employed for the determination of the shape of a hook.
社団法人日本機械学会の論文
2001-08-25