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Some insights about the modeling of self-heating in filled-rubbers

type de publication      communication internationale avec actes publiés
date de publication 2014
auteur(s) Ovalle Rodas Cristian Manuel; Zaïri Fahmi; Naït Abdelaziz Moussa
  
conférence 6th International Conference on Polymer Behaviour - I(CPB)6
     dates de 22-09-2014 à 26-09-2014
     lieu Vienna, Austria
     nom des actes Abstract booklet of the 6th International Conference on Polymer Behaviour
  
résumé Extensively used in the transport-related industries due to their damping properties, filled-rubber components are submitted to cyclic loading under common operating conditions. Due to the thermo-mechanical coupling, in connection with the viscous-related rubber behavior, the material heats up. Using a finite-strain thermo-viscoelastic constitutive model, the self-heating distribution on a Diabolo sample under fatigue is analyzed. The mechanical behavior is described by a Zener rheological representation in which the strain response is decomposed into two components: the first component captures the relaxed state and the second one brings the time-dependence deviation with regard to the relaxed response. The thermodynamic irreversibility is taken into account by means of the Clausius-Duhem inequality. The thermo-mechanical coupling is defined by postulating the existence of a dissipation pseudo-potential, function of the viscous dilatation tensor. The constitutive model was implemented into a finite element code. The capability of the thermo-viscoelastic model to describe the self-heating is discussed.
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