衝撃引張りと曲げの複合荷重を受ける揚重機用リンクチェーンの三次元弾塑性有限要素解析

概要

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Three-dimensional elastoplastic analysis is carried out using the finite-element method (DYNA3D) in order to evaluate the stress distribution and to optimize the shape of link chains subjected to combined loads of impact tension and bending moment. The yielded region is evaluated using von Mises'criterion. The effects of chains geometry and contact angles of the link chains on the stress distributions are shown. Experiments were performed to evaluate the strain in link chains subjected to combined loads. Fairly good agreement is seen between the numerical and experimental results. Thus, it is clarified that von Mises'equivalent stress in link chains which pass through a sheave can be improved by optimizing the chain width. Von Mises' equivalent stress in chains when both contact angles θ_1 and θ_2 are 60 degrees, is about 8% greater than that when the contact angles θ_1 and θ_2 are zero degrees.
一般社団法人日本機械学会の論文
1996-07-25