反復法による弾塑性有限要素法の一解法

概要

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This report proposes a new iterative method for the elastic-plastic stress analysis by the finite element method (FEM), of which scheme simultaneously satisfies the normality condition of plastic strain increments and two other conditions : the conditions that the stress point must move on the yield surface during plastic deformation and that the plastic strain increments relate to the hardening parameters. The combined hardening rule is used in this FEM program. In order to evaluate the accuracy and the computational time for the proposed new iterative method, we analyze an axisymmetric problem that is a round bar with a U groove loaded in the uni-axial direction. Good accuracy is obtained by using the incremental displacement (load) which produces the equivalent plastic strain increment within 0.01 in each step.
社団法人日本機械学会の論文
1989-03-25