MECHANICAL REQUIREMENTS AND STRUCTURES OF CYCLIC PLASTICITY MODELS

The condition of continuity in the large and in the small and Masing effect as the mechanical requirements for cyclic plasticity are first formulated. The basic characteristics of several well-known and frequently used cyclic plasticity models are examined with respect to fulfillment of these requirements, and their inevitable defects are indicated. It is concluded that among these models only the extended subloading surface model fulfills these requirements and is applicable to the prediction of elastoplastic deformation for cyclic loading, although unfortunately the other models, especially the multi, the two, and the initial subloading surface models, have been frequently adopted for metals, geomaterials, concretes, and so forth.