a rate-dependent constitutive formulation for interface is presented. The model will be considered for the analysis of concrete failure processes at the mesomechanic level of observation. The interface elastoviscoplatic formulation is based on a continuum Perzyna-type extension of the rate…
a rate-dependent constitutive formulation for interface is presented. The model will be considered for the analysis of concrete failure processes at the mesomechanic level of observation. The interface elastoviscoplatic formulation is based on a continuum Perzyna-type extension of the rate independent interface model by Carol and Lopez (1999). The generalized viscoplastic consistent condition for the interface is obtained which leads to the explicit formulation of the continuum tangent operator and, subsequently, to the algorithmic tangent tensor when the algebraic problem is considered.