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A Journal of Russian Academy of Sciences
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IssuesArchive of Issues2019-8pp.1182-1188

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A.A. Markin and M.Yu. Sokolova, "Variant of Nonlinear Elasticity Relations," Mech. Solids. 54 (8), 1182-1188 (2019)
Year 2019 Volume 54 Number 8 Pages 1182-1188
DOI 10.3103/S0025654419080089
Title Variant of Nonlinear Elasticity Relations
Author(s) A.A. Markin (Tula State University, pr. Lenina 92, Tula, 300012 Russia)
M.Yu. Sokolova (Tula State University, pr. Lenina 92, Tula, 300012 Russia)
Abstract A nonlinear model of an isotropic elastic material is proposed, which is a generalization of the Murnagan model, in which the expansion of the specific potential energy of the strains in a series in powers of the Genki logarithmic strain tensor is used. The physical meaning of the constants included in the obtained relations is determined. Along with bulk modulus K and shear modulus G, constants c1, c2, c3 associated with third-order moduli of elasticity were used: the constant c1 reflects the nonlinear dependence of the hydrostatic stress on volumetric deformation, the constant c2 reflects the dilatation effect, and the constant c3 reflects the deviation of the stress state angle from the deformed state angle. The article is dedicated to the blessed memory of outstanding scientists A. A. Ilyushin and L. A. Tolokonnikov, whose ideas were developed in this work.
Keywords nonlinearity, elasticity, hyperalasticity, finite deformations, Genki tensor, Murnagan material
Received 18 April 2018
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