非比例負荷に対する繰返し塑性構成式の定式化 : 第2報, 材料定数と材料関数の決定方法, ならびに構成式の実験的検討

概要

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The problems expressed in the title are discussed to validate the constitutive model of cyclic plasticity formulated in the first report. Analytical expressions are first derived for the stress versus plastic strain relation in monotonic simple loading as well as for the saturated stress amplitude versus plastic strain amplitude relations in simple and circular cyclic loadings with constant amplitudes. By use of these results and the corresponding experimental results, a systematic and simple method is developed to identify eight material constants and one material function involved in the proposed model. Then, the method is applied to the type 316 stainless steel used in our previous experiments, and computer simulation is performed. Comparison of the predicted results with the corresponding experiments shows that the proposed model can describe the cyclic-hardening behavior in various proportional and non-proportional loading conditions with constant or variable amplitude with a relatively high accuracy.
一般社団法人日本機械学会の論文
1986-11-25