陈理性力学IV.本构方程

The way to derive elastic constitutive equations is applied to elastoplastic deformation. Two measurable plasticity parameters are introduced. The obtained constitutive equation improves the classical elastoplastic constitutive equation in that it takes the maximum loading point as the reference point, while the classical elastoplastic constitutive equation takes the last plastic configuration as reference. Further more, the constitutive equations for incremental deformation is given for the multiplicative decomposition of plasticity and elasticity and the integral form of deformation.