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Endommagement sous choc dans les métaux : mesure et prédiction

Abstract : Shocks by means of plate impact (Al/Cu and Al/Ta) and laser impact on Al and Ta are reproduced with a viscoplastic extension of the Gurson model. Introduction of viscosity in the model allows to account for impacts at different velocities. Damage levels in the targets are analysed through microtomography measurements at the ESRF. On a laser shock on Al, the pore volume distribution curve is of the power-law type at large volumes.
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https://hal-cea.archives-ouvertes.fr/cea-00413008
Contributor : Yves-Patrick Pellegrini <>
Submitted on : Wednesday, September 2, 2009 - 11:05:55 PM
Last modification on : Monday, October 15, 2018 - 3:54:02 PM
Long-term archiving on: : Thursday, June 30, 2011 - 11:47:13 AM

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  • HAL Id : cea-00413008, version 1

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Joëlle Bontaz-Carion, Michel Nicollet, Philippe Manczur, Yves-Patrick Pellegrini, Jean-Claude Protat, et al.. Endommagement sous choc dans les métaux : mesure et prédiction. Fifth International Symposium High Dynamic Pressures (HDP V), Jun 2003, St-Malo, France. pp.351-362. ⟨cea-00413008⟩

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