粘塑性理論の高温非弾性解析への適用 : 多軸非比例負荷に対するモデルの修正と試解析例

概要

論文の詳細を見る
The extended viscoplasticity theory is modified without the use of the equilibrium stress function and the modified model is shown to be applicable to multiaxial nonproportional loadings using the updating rule for the viscosity control function. Numerical computations are made for 2 1/4Cr-1Mo steel at elevated temperatures (450-600℃) under typical multiaxial nonproportional loadings such as stress or strain path bending, mechanical ratcheting, combined creep-plasticity interaction, cruciform strain path and circular stress or strain path, some of which are experimentally tested in this study. Computational results represent the inelastic deformation characteristics observed in the experiment fairly well except some cases such as mechanical ratcheting, which requires that the anisotropic hardening effect to be taken into consideration.
一般社団法人日本機械学会の論文
1989-10-25