DYMAT 2009
Volume 2, 2009
DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
Page(s) 1271 - 1276
Section Constitutive Modeling
Published online 15 September 2009
DYMAT 2009 (2009) 1271-1276
DOI: 10.1051/dymat/2009179

Determination of damage parameters without numerical simulation using various shock experiments. The lead example

C. Bolis1, J. Dequiedt1, J. Servas1, C. Voltz2, N. Cordier1 and D. Sihachakr1

1  CEA, DAM, DIF, 91297 Arpajon, France
2  CEA, DAM, Valduc, 21120 Is-sur-Tille, France

Published online: 15 September 2009

The determination of parameters for classical models of dynamic damage, such as Tuler-Butcher or Johnson, needs usually various iterations of numerical simulations. Even when a set of parameters is determined with a particular experiment, one can not assure that it will allow fitting other experiments with different types of solicitation. A number of shock experiments have been led on a Lead-Calcium alloy to study its dynamical damage behavior. Various types of solicitation have been achieved (plate impact, laser driven shock and explosive). A continuous evolution of spall threshold as a function of release rate has been observed and is used to determine a set of parameters for damage model without numerical simulations. Some experimental results and a quick review of the method used are presented in this article.

© EDP Sciences 2009