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A Damage Law for Dynamic Failure in Brittle Solids with Penny-Shaped Microcracks

  • S.I. : Dynamic behavior of Brittle materials
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Abstract

A damage model for dynamic tensile failure of nominally brittle solids is constructed using a two-scale approach. The asymptotic homogenization method is applied to microstructures with penny-shaped microcracks evolving dynamically in order to obtain the new damage law. A microstructural length is present in the deduced evolution equation for which a strain-rate dependent fragment-size type expression is proposed. The ability of the new approach to predict the rate sensitivity of the tensile strength observed in experiments is illustrated for concrete and ceramic materials.

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  1. Université de Lorraine, CNRS, Arts et Métiers ParisTech, LEM3, 57000, Metz, France

    C. Dascalu

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Dascalu, C. A Damage Law for Dynamic Failure in Brittle Solids with Penny-Shaped Microcracks. J. dynamic behavior mater. (2023). https://doi.org/10.1007/s40870-023-00395-6

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  • DOI: https://doi.org/10.1007/s40870-023-00395-6

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