Моделирование затухающей памяти формы траектории в теории простых материалов с упругопластическим поведением и начальной поверхностьюнагружения

Abstract

A mathematical theory of strict construction of reduced constitutive relations for Noll’s simple strain-hardening elastoplastic materials with an initial loading surface and a path shape memory fading during the active deformation was developed. The strains and the type of symmetry of the material properties are arbitrary. Constitutive equations were derived for materials without the path shape memory, for those with a weak fading memory, and with an n-th order fading memory. An elastic-perfectly plastic material is defined from the standpoint of the fading memory of path shape. The theory of strict construction of reduced constitutive relations for materials with a 1-st order fading memory of path shape for infinitesimal strains was developed on the assumption that the strain measures are small over the whole history. Special attention is given to isotropic materials.