State Equations of Nonstationary Creep under Complex Loading
I. A. Volkov1, L. A. Igumnov2, D. A. Kazakov2, D. N. Shishulin3, I. S. Tarasov1
1Volga State University of Water Transport, Nizhny Novgorod, Russia, 603950
2Scientific Research Institute of Mechanics, Nizhny Novgorod, Russia, 603022
3Nizhny Novgorod State Technical University, Nizhny Novgorod, Russia, 603950
Keywords: нестационарная ползучесть, математическое моделирование, сложное нагружение, поверхность ползучести, материальные параметры, численный и натурный эксперименты, nonstationary creep, mathematical simulation, complex loading, creep surface, material parameters, numerical and full-scale experiments
Abstract
A mathematical model describing the nonstationary creep of metals under complex loading is proposed. The results of numerical simulation of creep of St.304 steel in complex regimes of block multiaxial cyclic deformation are given. The numerical calculation results obtained are compared with the data of full-scale experiments. Creep is simulated in complex deformation processes accompanied by the rotation of main regions of stress, strain, and creep strain tensors.
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