Application of Irreversible Thermodynamics in Finite Viscoelastic Deformations

Abstract

In this paper, Onsager’s principle of irreversible thermodynamics is applied to viscoelastic materials subjected to finite deformation. The constitutive equation of Ref. [10] for small dynamic strains superposed on a finite static deformation is used. The state of the resulting deformation can be considered as a small deviation from an equilibrium reference state. The latter is the state of equilibrium of a material subjected to a finite deformation in which the material is maintained for a long time.