NUMERICAL SIMULATION OF SPALLATION IN BRITTLE SOLIDS

Issue		J. Phys. IV France Volume 01, Number C3, Octobre 1991 DYMAT 1991 - 3rd International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading


Page(s)		C3-577 - C3-580
DOI		http://dx.doi.org/10.1051/jp4:1991381

DYMAT 1991 - 3rd International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading

J. Phys. IV France 01 (1991) C3-577-C3-580
DOI: 10.1051/jp4:1991381

NUMERICAL SIMULATION OF SPALLATION IN BRITTLE SOLIDS

Z. WANG, F. HUANG and S. YUN

Mechanics Engineering Department, Beijing Institute of Technology, P.O. Box 327, Beijing 100081, China

Résumé
Un modèle de rupture dynamique fragile de matériaux endommagés est décrit dans cette communication. La porosité Φ est utilisée pour décrire la rupture fragile par nucléation, croissance, coalescence de micro-fissures et écaillage. Des simulations numériques sont réalisées avec ce modèle. Les résultats obtenus montrent un meilleur accord avec les résultats expérimentaux que ceux de Cochran, [1].

Abstract
A dynamic brittle fracture model of damaged solids is developed in this paper. The porosity Φ is used for describing the brittle fracture process which consists of microcrack nucleation, microcrack growth, microcrack coaleacence and spall formation. Numerical simulation of spall process is carried out with the model. The numerical results are much more better in agreement with the experiment results than Cochran's ^[1].

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