An implicit gradient formulation for microplane Drucker-Prager plasticity

摘要: Abstract A microplane plasticity model is regularized by an implicit gradient enhancement. The defined a Drucker-Prager yield criterion and within the thermodynamically consistent framework of theory. Thus, advantages both approach pressure sensitive are combined nonlocal type method. allows for description induced anisotropy which observed in failure quasi-brittle materials. Based on volumetric–deviatoric split, version function defined. enhancement employed to remedy pathological mesh sensitivity. It yields advantage being strongly equivalent integral-type models, while it preserves mathematical locality equations keeps implementation straightforward classical finite element proposed formulation implemented 3D code. stress return mapping algorithm tangent derived. Numerical examples simulated demonstrate capability method regularize eliminate dependency.