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Computational modelling of impact damage in brittle materials

Camacho, G. T. and Ortiz, M. (1996) Computational modelling of impact damage in brittle materials. International Journal of Solids and Structures, 33 (20-22). pp. 2899-2938. ISSN 0020-7683. doi:10.1016/0020-7683(95)00255-3.

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A Lagrangian finite element method of fracture and fragmentation in brittle materials is developed. A cohesive-law fracture model is used to propagate multiple cracks along arbitrary paths. In axisymmetric calculations, radial cracking is accounted for through a continuum damage model. An explicit contact/friction algorithm is used to treat the multi-body dynamics which inevitably ensues after fragmentation. Rate-dependent plasticity, heat conduction and thermal coupling are also accounted for in calculations. The properties and predictive ability of the model are exhibited in two case studies: spall tests and dynamic crack propagation in a double cantilever beam specimen. As an example of application of the theory, we simulate the experiments of Field (1988) involving the impact of alumina plates by steel pellets at different velocities. The calculated conical, lateral and radial fracture histories are found to be in good agreement with experiment.

Item Type:Article
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Ortiz, M.0000-0001-5877-4824
Additional Information:© 1996 Elsevier. The work has been funded by the Army Research Office University Research Initiative through grant DAAL 03-92-G-0107. The authors are indebted to Profs R. Clifton, L. B. Freund and A. Bower of Brown University, to Prof. G. Ravichandran of the California Institute of Technology and to Drs 1. Nagtegaal and D. Flanagan of HKS Inc. for helpful suggestions and discussions. The helpful comments and suggestions of the first reviewer are greatly appreciated
Funding AgencyGrant Number
Army Research Office (ARO)DAAL 03-92-G-0107
Issue or Number:20-22
Record Number:CaltechAUTHORS:20171213-154113812
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Official Citation:G.T. Camacho, M. Ortiz, Computational modelling of impact damage in brittle materials, In International Journal of Solids and Structures, Volume 33, Issues 20–22, 1996, Pages 2899-2938, ISSN 0020-7683, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:83899
Deposited By: Lydia Suarez
Deposited On:15 Dec 2017 19:21
Last Modified:15 Nov 2021 20:15

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