Found 8 document(s)
Page 1 of 1
-
G-theta method with appropriate virtual crack extension (theta field) is proposed for the accurate evaluation of energy release rate along a crack edge which is non-orthogonal to the free surface. This method is implemen...
-
In this paper we present a family of gradient-enhanced continuum damage models which can be viewed as a regularization of the variational approach to fracture capable of predicting in a unified framework the onset and sp...
-
Considering a family of gradient-enhanced damage models and taking advantage of its variational formulation, we study the stability of homogeneous states in a full three-dimensional context. We show that gradient terms h...
-
We revisit in a 2d setting the notion of energy release rate, which plays a pivotal role in brittle fracture. Through a blow-up method, we extend that notion to crack patterns which are merely closed sets connected to th...
-
This second part of the variational approach to damage is devoted to the construction of non-local gradient-enhanced models. That consists in extending to these regularized models the concepts introduced in the first part...
-
On propose un modèle cohésif permettant de rendre compte de la fissuration par fatigue dans une structure 2D ou 3D soumise à un chargement cyclique d’amplitude quelconque. Le modèle présenté est fondé sur un principe de ...
-
L'objet de la mécanique de la rupture est de modéliser l'initiation et la propagation de fissures dans les structures sous l'effet de chargements thermo-mécaniques dépendant du temps. Si l’on adopte le point de vue de l’...
-
We propose a method of construction of non homogeneous solutions to the problem of traction of a bar made of an elastic-damaging material whose softening behavior is regularized by a gradient damage model. We show that, ...