Abstract
Some features of the behavior of viscoelastic materials whose existence leads to the choice of nonlinear constitutive relations are discussed. A classification of such constitutive relations is given and a number of requirements imposed by practice on their adequacy are formulated. A nonlinear theory of viscoelasticity is proposed; this theory offers the advantages over the theory in which stresses are expressed in terms of strains by integral operators of increasing multiplicity. By a one-dimensional example, it is shown that the constitutive operator relations are reciprocal.
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Original Russian Text © B.E. Pobedrya, 2012, published in Vestnik Moskovskogo Universiteta, Matematika. Mekhanika, 2012, Vol. 67, No. 5, pp. 65–69.
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Pobedrya, B.E. Adequacy of a nonlinear theory of viscoelasticity. Moscow Univ. Mech. Bull. 67, 134–137 (2012). https://doi.org/10.3103/S002713301205007X
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DOI: https://doi.org/10.3103/S002713301205007X