初期面外変形をもつ平板が引張り荷重を受けるときの非線形応力解析 : 許容初期変形量を検討するための大変形理論解析

概要

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Some initial out-of-plane distortions, occurring as a result of the errors during working and assembling members or by the thermal deformations during welding, often exist in the members of various structures. A large strain concentration at the distortion regions is induced by an application of tensile load to such members. In spite of the importance for practice, the quantitative relation between the initial distortions and the strain concentration has scarcely been investigated so far. In the present paper, theoretical formulae for the strain concentration at the distortion regions, with various types of the initial out-of-plane distortions, are derived on the basis of the large deformation theory by infinitesimal strain. The theory is then compared with experimental strain concentration and shown to agree well with each other. The present formulae are very useful for estimating the amount of allowable distortions in various structures.
一般社団法人日本機械学会の論文
1989-02-25