539.374 Numerical simulation of nonisothermal elastoplastic deformation processes of structural materials

Temis Y. M. (Центральный институт авиационного моторостроения им. П.И. Баранова), Hudyakova A. D. (Центральный институт авиационного моторостроения им. П.И. Баранова/Bauman Moscow State Technical University)

PLASTICITY, NUMERICAL MODELING, ERROR CORRECTION, NONELASTICITY MODEL, COMPLEX DEFORMATION, NONISOTHERMAL CONDITIONS, SAMPLES TESTING


doi: 10.18698/2309-3684-2018-2-4769


The algorithm of the loading surface equation account during integration of constitutive equations system of invariant nonisothermal plasticity theory, based on returning of a representing point to a loading surface equation on each step of calculation was offered. Efficiency of proposed algorithm in combination with different linearization schemas for number of proportional and nonproportional thermomechanical deformation trajectories was explored. Results of simulation of the processes of tubular nickel-based alloy IN738LC specimens testing under proportional (tension-compression, tension-compression with torsion) and nonproportional («circle» and «diamond» with out-of-phase axis strain and temperature changing) cyclic thermomechanical deformation trajectories in operating-temperature range from 450 to 950°C.


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Темис Ю.М., Худякова А.Д. Численное моделирование процессов неизотермического упругопластического деформирования конструкционных материалов. Математическое моделирование и численные методы, 2018, № 2, с. 47–69.



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