Matériaux & Techniques
Volume 73, Number 8-9, 1985
|Page(s)||E73 - E76|
|Published online||21 April 2017|
Discussion des critères macroscopiques de rupture recherche d’un critère macroscopique d’amorçage
Discussion of the macroscopic fracture criteria. In search of a macroscopic initiation criterion
Ecole des Mines. Centre de mise en forme des matériaux, Sophia-Antipolis GRECO « Grandes déformations et endommagement ».
The criteria for ductile fracture proposed by Latham and Cockroft and by Oyane are applied to the following deformation paths: simple shear then uniaxial tension (C + T), or the opposite (T + C). The results of both criteria are very similar, the path C + T giving a smaller total equivalent strain. The shapes of the critical curves for decohesion obtained from a microscopic model suggest the formulation of a macroscopic criterion for the initiation of damage similar to the macroscopic criteria for fracture.
© SIRPE 1985
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