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This article is cited in 6 scientific papers (total in 6 papers)
Assessment of the service life of structural steels by using degradation models with allowance for fatigue and creep of the material
I. A. Volkova, V. V. Egunovb, L. A. Igumnovb, D. A. Kazakovb, Yu. G. Korotkikha, F. M. Mitenkovc a Volga State University of Water Transport, Nizhny Novgorod, 603950, Russia
b Research Institute for Mechanics at the Lobachevsky State University of Nizhni Novgorod, Nizhny Novgorod, 603022, Russia
c Afrikantov Experimental Design Bureau for Mechanical Engineering, Nizhny Novgorod, 603074, Russia
Abstract:
A mathematical model is developed within the framework of equations of damaged medium mechanics to describe the processes of viscoplastic straining and damage accumulation in structural steels with allowance for fatigue and creep of the material. A model of damage summation due to interaction of low-cycle fatigue and creep of the material is proposed. Material parameters and scalar functions of equations of mechanics of damaged media are determined. Viscoplastic straining and fatigue-induced damage accumulation in 08Kh18N10T and 12Kh18N9 are studied numerically, and the data obtained are compared with available results of physical experiments.
Keywords:
plasticity, creep, low-cycle fatigue, service life, damaged medium mechanics, basic experiment, material parameters, damage, fracture.
Received: 08.06.2015
Citation:
I. A. Volkov, V. V. Egunov, L. A. Igumnov, D. A. Kazakov, Yu. G. Korotkikh, F. M. Mitenkov, “Assessment of the service life of structural steels by using degradation models with allowance for fatigue and creep of the material”, Prikl. Mekh. Tekh. Fiz., 56:6 (2015), 70–83; J. Appl. Mech. Tech. Phys., 56:6 (2015), 995–1006
Linking options:
https://www.mathnet.ru/eng/pmtf1287 https://www.mathnet.ru/eng/pmtf/v56/i6/p70
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