| Numéro |
J. Phys. IV France
Volume 04, Numéro C8, Septembre 1994
EURODYMAT 1994 - 4th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
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| Page(s) | C8-665 - C8-670 | |
| DOI | https://doi.org/10.1051/jp4:19948101 | |
J. Phys. IV France 04 (1994) C8-665-C8-670
DOI: 10.1051/jp4:19948101
Percolation wave propagation, and void link-up effects in ductile fracture
D.L. TonksApplied Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, U.S.A.
Résumé
Ce papier décrit la croissance et le contour de l'endommagement ductile basé sur la croissance et la coalescence de vides. La influence de la taille des fissures et de la vitesse des ondes sur la croissance de l'endommagement est pris en compte. La porosité de l'écaillage est calculer avec la theorie de le percolateur.
Abstract
This work investigates the time evolution and spatial morphology of ductile damage based on void growth and coalescence. The size enhancement of damage cluster growth, as well as wave speed limiting of growth, are treated microscopically. Simplified 2D plane strain simulations using individual voids are done with uniaxial strain and explained with a probabilistic theory. At low strain rates, fracture occurs by long, localized cracks. At high strain rates, widespread, random damage breaks the system.
© EDP Sciences 1994