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

Most of analytical [6-7] have applied the incremental formulation in order to evaluate creep crack growth process in viscoelastic media. 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. Nonlinear deformations: ^ Nonlinear mechanical experiments, including stress-strain behavior, stress relaxation and creep/recovery were conducted on an unfilled lightly cross-linked SBR. I am working on EVA (Ethylene-vinyl acetate) to identify its viscoelastic properties I have done relaxation, creep and tensile test on it. This property possessed by all plastics It is this non-linear relationship for plastics that makes an understanding of creep, stress relaxation, and fatigue properties extremely important. Aleksey Drozdov and AlDorfmann [2] derive constitutive equations for the nonlinear viscoelastic behaviour after performing tensile relaxation tests. Mechanics of Composite Materials (Dover Civil and Mechanical Engineering) Viscoelastic Materials. The limitations of the additive model were clearly revealed. Failures arising from hasty material selection are not uncommon in plastics. Analytical Fracture Mechanics (Dover Civil and Mechanical. Viscoelasticity is defined as the tendency of plastics to respond to stress as if they were are combination of elastic solids and viscous fluids. Plastics are viscoelastic materials. 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. Creep and Relaxation of Nonlinear Viscoelastic Materials: With an Introduction to Linear Viscoelasticity.