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Thermodynamic model for strain-induced crystallization in rubber

  • Department of Mechanics École Polytechnique
  • Manufacture Francaise des Pneumatiques Michelin

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Résumé

Natural rubber (NR) is known to crystallize under strain (SIC) so that NR samples subjected to loading-unloading cycles exhibit hysteresis. A brief review of the numerous experiments conducted on this material is given. Detailed information on the microstructure is therefore available, particularly simultaneous measurements of stress versus elongation and crystallinity versus elongation. Introducing an internal variable associated to crystallinity, a solution to the evolution of this variable can be found, that is thermodynamically consistent. This variable enables us to obtain good laws for both stress-strain and crystallinity-strain curves. This model is assessed by uniaxial tensile tests under cyclic loadings.

langue originaleAnglais
titreECCOMAS 2012 - European Congress on Computational Methods in Applied Sciences and Engineering, e-Book Full Papers
Pages237-252
Nombre de pages16
étatPublié - 1 déc. 2012
Modification externeOui
Evénement6th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012 - Vienna, Autriche
Durée: 10 sept. 201214 sept. 2012

Série de publications

NomECCOMAS 2012 - European Congress on Computational Methods in Applied Sciences and Engineering, e-Book Full Papers

Une conférence

Une conférence6th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012
Pays/TerritoireAutriche
La villeVienna
période10/09/1214/09/12

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