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Thermo-visco-hyperelastic modeling of the rubber self-heating under fatigue

type de publication      communication internationale avec actes publiés
date de publication 2013
auteur(s) Ovalle Rodas Cristian Manuel; Zaïri Fahmi; Naït Abdelaziz Moussa
conférence 8th European Conference on Constitutive Models for Rubbers
     dates de 25-06-2013 à 28-06-2013
     lieu San Sebastian, Spain
     nom des actes Constitutive Models for Rubber VIII
ISBN / ISSN 978-1-138-00072-8
résumé 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.
mots clés Rubber-type materials, low-cycle fatigue, self-heating, thermo-viscoelastic model.
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