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Creep and Relaxation of Nonlinear Viscoelastic Materials William N. Findley, Kasif Onaran, Frances A. Davis
Publisher: Dover Publications

A recursive-iterative formulation is implemented for the hereditary integral of the material. Creep and Relaxation of Nonlinear Viscoelastic Materials: With an Introduction to Linear Viscoelasticity. Wave Motion, Poro-Elasticity Problems and Constitutive Equation of Materials. Elements for the Numerical Analysis of Wave Motion in Finally a method is presented for the comparison and evaluation of the consistency of creep and relaxation data obtained by a set of independent experiments. The viscoelastic relaxation modulus obtained for the same material from the linear viscoelastic measurements was used to describe the behavior in the nonlinear regime for validating the class of the additive constitutive models. Abstract This paper is concerned with the development of a new incremental formulation in the time domain for linear, non-aging viscoelastic materials undergoing mechanical deformation. Section 3 deals with the problems associated with the determination of the Constitutive Equation of nonlinear viscoelastic materials. Creep and Relaxation of Nonlinear Viscoelastic Materials: With an Introduction to Linear Viscoelasticity William N. Aleksey Drozdov and AlDorfmann [2] derive constitutive equations for the nonlinear viscoelastic behaviour after performing tensile relaxation tests. The limitations of the additive model were clearly revealed. Nonlinear deformations: ^ Nonlinear mechanical experiments, including stress-strain behavior, stress relaxation and creep/recovery were conducted on an unfilled lightly cross-linked SBR. The plate is made of nonlinear viscoelastic orthotropic material expressed by the Schapery single integral model. Most of analytical [6-7] have applied the incremental formulation in order to evaluate creep crack growth process in viscoelastic media.