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

When a material exhibits a linear response it is categorized as a Newtonian material. Springs represent the Densification region is controlled by last spring with nonlinear stiffness kD . R m christensen - AbeBooks - AbeBooks Official Site - New & Used. Dover Civil and Mechanical Engineering Theory of viscoelasticity - Richard M. These models have been used to modeling the behavior of a viscoelastic materials (creep and stress relaxation). 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. I am working on EVA (Ethylene-vinyl acetate) to identify its viscoelastic properties I have done relaxation, creep and tensile test on it. Aleksey Drozdov and AlDorfmann [2] derive constitutive equations for the nonlinear viscoelastic behaviour after performing tensile relaxation tests. History of viscoelastic materials. Finally, fit the pseudo data with the Prony series. Most of analytical [6-7] have applied the incremental formulation in order to evaluate creep crack growth process in viscoelastic media. Once the parameters of the creep model are known, produce relaxation pseudo-data with the conjugate relaxation model for the same times of the original data. Depending on the change of strain rate versus stress inside a material the viscosity can be categorized as having a linear, non-linear, or plastic response.