Model of non-isothermal elastoplastic deformation of structural materials under complex loading

Yu. M. Temis^ab, A. D. Khudiakova<sup>ab

a</sup> Bauman Moscow State Technical University
^b Central Institute of Aviation Motors, State Scientific Center of Russian Federation, Moscow

Abstract: The study introduces a model of elastoplastic deformation of structural alloys under conditions of complex nonisothermal loading. The model is based on the plastic flow theory. Within the research we derived the relations that made it possible to determine the parameters of the model using the results of sample tests according to the program of rigid symmetric cyclic deformation. Moreover, we developed an algorithm for determining the plasticity parameters from a limited set of experimental data. Based on the algorithm developed, we obtained the plasticity parameters for the nickel alloy IN738LC over a wide temperature range.

Keywords: plasticity, complex deformation, non-isothermal conditions, parameter determination.

UDC: 539.374

DOI: 10.18698/2309-3684-2017-3-2035