1st European Mechanics of Materials Conference on Local Approach to Fracture '86 - 96'
J. Phys. IV France 06 (1996) C6-463-C6-472
A Class of Constitutive Relations with Internal Variable Derivatives. Derivation from Homogenization and Initial Value ProblemS. Andrieux, M. Joussemet and E. Lorentz
Electricité de France, Direction des Etudes et Recherche, Service IMA, Département MMN, Groupe 174, 1 avenue du Général de Gaulle, 92141 Clamart cedex, France
A general framework for deriving and using a class of constitutive laws incorporating spatial gradients of internal variables is presented. It uses two basic ingredients : a derivation of such models by homogenization techniques and a reformulation of the evolution equation at the scale of the whole structure.
© EDP Sciences 1996