|type de publication
||communication internationale avec actes publiés
|date de publication
||Ovalle Rodas Cristian Manuel; Zaïri Fahmi; Naït Abdelaziz Moussa|
| || |
||8th European Conference on Constitutive Models for Rubbers
||de 25-06-2013 à 28-06-2013
||San Sebastian, Spain
| nom des actes
||Constitutive Models for Rubber VIII
| || |
|ISBN / ISSN
||The objective of this study is to propose a thermo-visco-hyperelastic model capable to predict the self-heating of rubber-type materials under fatigue loading. The model, compatible with the Clausius-Duhem dissipation principle, is based on a Zener rheological representation. It is well recognized that the mechanical response of rubber-type materials can be decomposed into two components: an equilibrium component that takes into consideration the material state after long-time stress relaxation and a second component that takes into consideration the non-linear time-dependent deviation from the equilibrium response. Considering the thermo-mechanical coupling a pseudo-potential of dissipation, function of the viscous dilatation tensor, is postulated. The proposed model is fully three-dimensional and has been implemented into a finite element code. The numerical results are in good agreement with experimental data, carried out on a styrene-butadiene rubber, for different strain-rate and strain conditions.
||Rubber-type materials, low-cycle fatigue, self-heating, thermo-viscoelastic model.