Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Generalization of T and A integrals to time-dependent materials: analytical formulations

Abstract : This paper deals with the generalization of T-integral to crack growth process in viscoelastic materials. In order to implement this expression in a finite element software, a modelling form of this integral, called Aθ, is developed. The analytical formulation is based on conservative law, independent path integral, and a combination of real, virtual displacement fields, and real, virtual thermal fields introducing, in the same time, a bilinear form of free energy density F. According to the generalization of Noether's method, the application of Gauss Ostrogradski's theorem combined with curvilinear cracked contour, T v is obtained. By introducing a volume domain around crack tip, the modelling expression Aθ is also defined.. Finally, the viscoelastic generalization through a thermodynamic approach, called A v , is introduced by using a discretisation of the creep tensor according to a generalized Kelvin Voigt representation.
Type de document :
Article dans une revue
Liste complète des métadonnées
Contributeur : Claire Douady Connectez-vous pour contacter le contributeur
Soumis le : lundi 24 octobre 2011 - 17:01:30
Dernière modification le : samedi 26 mars 2022 - 04:26:42

Lien texte intégral



Rostand Moutou Pitti, Frédéric Dubois, Christophe Petit. Generalization of T and A integrals to time-dependent materials: analytical formulations. International Journal of Fracture, Springer Verlag, 2010, 161 (2), pp.187-198. ⟨10.1007/s10704-010-9453-1⟩. ⟨hal-00635161⟩



Consultations de la notice