A Damage Model for the Dynamic Fragmentation of Brittle Solids

Abstract : Impact produces high stress waves leading to the degradation of brittle materials such as ceramics. Based upon a probabilistic approach, single and multiple fragmentation regimes are exhibited. The deterministic nature of the numerical simulation is discussed with respect to stress rate and volume. A damage model is proposed to account for dynamic loadings. Characteristic parameters are proposed and used to choose the mesh size. The mesh sensitivity is studied on a spalling configuration. Numerical predictions are compared with experimental data obtained on edge-on impact configurations.
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Submitted on : Monday, December 17, 2007 - 11:12:04 PM
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Christophe Denoual, François Hild. A Damage Model for the Dynamic Fragmentation of Brittle Solids. Computer Methods in Applied Mechanics and Engineering, Elsevier, 2000, 183, pp.247-258. ⟨10.1016/S0045-7825(99)00221-2⟩. ⟨hal-00013966⟩

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