Abstract
In this paper a multilayer J2-plasticity model that uses Prager's translation rule for the yield surface and a modified kinematic hardening for the hardening surfaces that avoids their overlapping is developed. An implicit algorithm for the model and the consistent elastoplastic tangent are also formulated in order to obtain second-order convergence in Newton algorithms. The multiaxial behaviour of the resulting discrete model is compared to that of a virtual bounding surface model and to that of a multilayer implicit one based on Mróz's kinematic rule. The algorithm is also applied to soil dynamics to show its robustness. Copyright © 2001 John Wiley & Sons, Ltd.
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