1737 高分子材料の非弾性構成式による多軸変形のシミュレーション(S16-2 アクチュエータ・高分子材料,S16 先進材料の強度・機能評価とメゾメカニックス)

概要

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Inelastic deformation of Polyethylene in biaxial state of stress was simulated systematically by a viscoplastic constitutive equation proposed by the present authors. The constitutive equation was formulated by combining the kinematic hardening creep theory of Malinin and Khadjinsky with the nonlinear kinematic hardening rule of Armstrong and Frederick. The nonlinear kinematic hardening rule was modified by using a loading surface and a new parameter. Inelastic deformation of Polyethylene under proportional and non-proportional loading conditions was simulated; the former conditions include reversal of loading direction and the later ones include strain-hold and change in the loading direction. The validity of the constitutive equation was confirmed and features of the inelastic deformation of Polyethylene were discussed.
社団法人日本機械学会の論文
2005-09-18