繰返し負荷を受ける有孔帯板の数値解析

概要

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This paper deals with the cyclic plastic problem of a strip with a hole subjected to cyclic loading at the ends. For the numerical analysis, the constitutive model, in which the motion of the center of the yield surface is incorporated, is implemented in a finite element method. The distribution of strain and stress, and the development of the subsequent yield surface during cyclic loading are discussed in detail both for the zero and nonzero mean value of cyclic load. To verify the results of the computer simulations, the experiment of a strip with a hole of type 304 stainless steel is carried out. As a result, even the cyclic loading with nonzero mean value of cyclic load, strain at the bottom of the circular hole is ratchetted with increase of cycle, and stress and the subsequent yield surface approach to those due to the zero mean value of cyclic load.
一般社団法人日本機械学会の論文
1989-05-25