Creep and Relaxation of Nonlinear Viscoelastic Materials by William N. Findley, Kasif Onaran, Frances A. Davis

Creep and Relaxation of Nonlinear Viscoelastic Materials



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Creep and Relaxation of Nonlinear Viscoelastic Materials William N. Findley, Kasif Onaran, Frances A. Davis ebook
Publisher: Dover Publications
Page: 400
ISBN: 9780486660165
Format: pdf


Viscoelasticity is defined as the tendency of plastics to respond to stress as if they were are combination of elastic solids and viscous fluids. Failures arising from hasty material selection are not uncommon in plastics. G., Nonlinear Mechanics , 1998. 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. Finally, fit the pseudo data with the Prony series. When a material exhibits a linear response it is categorized as a Newtonian material. Professor Feng Yuanzhen made of nonlinear viscoelastic materials, the quasi-linear theory. History of viscoelastic materials. 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. An age-dependent Maxwell chain model with four Maxwell elements was used to model stress relaxation and creep [41]. And Munz, D., Stress Intensity factors and Weight Functions , 1997. Orange relaxation curve in Figure 5 (6) This model can explain the complicated relaxation. 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. Et al., Creep and Relaxation of Nonlinear Viscoelastic Materials , 1990. Plastics are viscoelastic materials. Morrison (2001), Understanding Rheology, Oxford University Press, ISBN 0-19-514166-0 and 978-0195141665.





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