On the modelling of nonlinear viscoelastic relation for rubber-like materials
| Autor: | N.K. Jha, Ritvik Dobriyal, Gaurav Kumar Badhotiya, Pushpendra Kumar |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Reinforced rubber 02 engineering and technology Mechanics 021001 nanoscience & nanotechnology 01 natural sciences Viscoelasticity Nonlinear system Payne effect Natural rubber Hyperelastic material visual_art 0103 physical sciences Dynamic modulus visual_art.visual_art_medium Dissipative system 0210 nano-technology |
| Zdroj: | Materials Today: Proceedings. 46:10546-10550 |
| ISSN: | 2214-7853 |
| Popis: | A large class of dissipative materials are modelled using a time- and frequency-dependent viscoelastic relations. A typical class of such materials are rubber which finds application in automotive tires, air springs etc. One of the most interesting effects that rubber exhibits are the nonlinear rate-dependent behaviour, which is linked to the Payne effect. It is found that the reinforced rubber under monotonically increasing strain amplitude results in decreasing storage and a sigmoidal-shaped loss modulus. In this study, we propose a phenomenological hyper-viscoelastic model that consists of a hyperelastic element connected in parallel with another hyperelastic component in series with a non-linear viscoelastic flow element. As a fundamental concept, we split the total stress into an elastic and a history-dependent component. As an example problem, we model the constitutive response of a rubber sample where the results have shown a perceptible distinction between the linear and nonlinear formulations. It can be said that from the practical point of view, the linear viscoelastic formulation is simple and reasonable to use only for small strains. We conclude this paper by applying a constant pre-strain amplitude with a different frequency of loading. |
| Databáze: | OpenAIRE |
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