Effects of Hypoelastic Model and Plastic Hardening on Numerical Simulation : Shear Deformation of 2-Dimensional Plane Block

概要

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In the present paper we give a finite-element formulation for large-deformation elastic-plastic structural analysis in order to study the effects of the utilized con-stitutive equation on numerical simulation. The general framework of the constitutive equation for large strain and rotation problems is based on hypoelasticity, where either Jaumann or Green stress rate is assumed. For the plastic hardening rule, the internal time theory is employed, which can be regarded as a combined nonlinear isotropic/kinematic hardening plasticity model retaining the concepts of 'yield surface' and 'normality rule'. Numerical examples of plane blocks subjected to shear deformation show how the fundamental features of mechanical response are affected by the constitutive equation employed.
一般社団法人日本機械学会の論文
1995-10-15