ON THE EXISTENCE OF THERMOMECHANICAL SURFACE IN MATERIALS UNDER NONISOTHERMAL REPEATED SIMPLE LOADING

摘要

The paper discusses the findings of the experimental study of deformation in steels of various grades in tension with interim unloading stages where the test temperature was varied. It is demonstrated that not for all the materials this deformation process is described by the hypothesis of thermo-mechanical surface. The authors propose a constitutive equation for the materials under repeated simple loading with variable temperatures.