Constitutive Model for Rapidly Damaged Structural Materials. II. Finite Element Formulation.

A constitutive model was recently proposed to describe flow and damage in rapidly loaded structural materials. Its finite element implementation is given in the present work, with numerical results to be reported in a subsequent work. One important feature is that the finite element formulation is consistent in that the damage and flow strains are approximated in the same was as the corresponding parts of the total strain. A second important feature is that certain interelement continuity conditions are imposed in the flow and damage strains. A system of ordinary differential equations in time is obtained for the nodal displacement, flow and damage parameters. Author