ABOUT THE BOUNDARY BETWEEN THERMOVISCOELASTIC AND THERMOVISCOELASTOPLASTIC DEFORMATION PROCESSES

Abstract

The concept of the loading surface, which is fundamental in flow theories, is at the same time the most vulnerable point of these theories. Within the framework of the representation of microheterogeneous materials in the form of an infinite number of kinematically interconnected subelements with different properties, the boundary between reversible and irreversible behavior becomes conditional. It is shown that the duration of the reversible state with respect to deformation is determined not by the thermoviscoelastic, but by the thermoviscoplastic properties of the material.