Numéro
J. Phys. IV France
Volume 01, Numéro C3, Octobre 1991
DYMAT 1991 - 3rd International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
Page(s) C3-733 - C3-738
DOI http://dx.doi.org/10.1051/jp4:19913103
DYMAT 1991 - 3rd International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading

J. Phys. IV France 01 (1991) C3-733-C3-738

DOI: 10.1051/jp4:19913103

INFLUENCE OF FLOW RULE AND INERTIA ON VOID GROWTH IN A RATE SENSITIVE MATERIAL

H. KLÖCKER and F. MONTHEILLET

Département Matériaux, École des Mines de Saint-Etienne, 158 Cours Fauriel, F-42023 Saint-Etienne Cedex 2, France


Résumé
La déformation d'une cavité ellipsoïdale de révolution dans une matrice infinie soumise à une sollicitation dynamique est étudiée. On montre l'effet stabilisant sur la croissance de l'endommagement de la vitesse de traction et des effets d'inertie dans le domaine dynamique ([MATH]).


Abstract
The growth and deformation of a spheroidal void in an infinite viscous matrix is addressed. In the case of a linearly viscous (newtonian) matrix ([MATH]), an exact solution is obtained. On the basis of this solution the case of a power law viscoplastic matrix ([MATH]) is dealt with by a variational approach. Finally, the Galerkine method is used to take into account inertia effects. This work shows the anisotropy of damage and the stabilizing effect of the remote strain rate [MATH] for a material exhibiting the linear flow rule [MATH] as well as the stabilizing effect of the inertia forces.



© EDP Sciences 1991