Strain-space plasticity formulation for hardening-softening materials with elastoplastic coupling (Q1077972)

In this article we first introduce a general form of strain-space plasticity formulation which is somewhat similar to that developed previously by \textit{P. J. Yoder} and \textit{W. D. Iwan} [J. Appl. Mech. 48, 773-778 (1981; Zbl 0468.73041)]. To account for the elastoplastic coupling effect, the conventional plasticity theory is combined with the fracturing theory of \textit{J. W. Dougill} [e.g. Z. Angew. Math. Phys. 27, 423-437 (1976; Zbl 0357.73078)] to give a more general form of strain- space formulation. Attempt is then made to apply the general theory to model the softening behavior of a concrete element failed in a mixed crushing/cracking mode.