in this paper a double hardening model with two hardening parameters(i. e. plastic volumetric strain and shear strain) and a single smooth yield function has been proposed.
the accumulated damage model is viewed as the function of equivalent plastic strain, plastic volumetric strain and pressure.
积累损伤作为等效塑性应变、塑性体积应变和压力的函数。
based on the principle of interaction between plastic volumetric strain and plastic generalized shear strain, the method of numerical modeling for constitutive relations of clay is studied.