一般加工硬化をもつPrandtl-Reuss 塑性物質の構成式

概要

論文の詳細を見る
The constitutive equations of a plastic material with general work-hardening are proposed. Two internal state variables, scalar and tensor, are introduced. The plastic potential is assumed to be a scalar function of the translated stress and the scalar internal state variable. Four constitutive assumptions are taken into cosideration. A mechanical constitutive equation and two evolutional equations are derived, where the former relates the translated stress rate to the stretching, and the latter govern the temporal variation of the internal state variables. These constitutive relations may show the kinematic work-hardening as well as the isotropic work-hardening. A fracture rule is also pro-posed. It is supposed that the fracture occurs when a scalar function of two internal state variables, called the fracture function, has a critical value.
社団法人日本材料学会の論文
1978-06-15