A two‐surface damage‐plasticity model based on a Drucker—Prager yield criterion

A gradient-extended two-surface damage-plasticity model based on a von Mises yield criterion has been proposed by [1, 2], which can be flexibly adapted to (quasi-)brittle-like, ductile-like, or various material behaviors in between. However, the does not take into account effect of hydrostatic pressure, therefore it hardly failure behavior pressure-sensitive materials such as geomaterials and some metals. For this reason, pressure-dependent Drucker-Prager is current work, nonlinear hardening also included. Plasticity damage are treated distinct but coupled dissipative phenomena approach. Furthermore, numerical implementation discussed study, return mapping procedures smooth portion vertex cone detail.