Multiscale dislocation dynamics simulations of shock compression in copper single crystal q Mutasem A. Shehadeh a, * , Hussein M. Zbib a , Tomas Diaz de la Rubia b a School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99163-2920, USA b Materials Science and Technology Division, Chemistry and Materials Science Directorate, Mail Stop L-353, Lawrence Livermore National Laboratory, 7000 East Avenue Livermore, CA 9450, USA Received in final revised form 18 September 2004 Available online 14 June 2005 Abstract Ultra short pulse shock wave propagation, plastic deformation and evolution of disloca- tions in copper single crystals with (0 0 1), (0 1 1) and (1 1 1) orientations are investigated using multiscale dislocation dynamics plasticity analyses. The effects of peak pressure, pulse dura- tion, crystal anisotropy and the nonlinear elastic properties on the interaction between shock wave and dislocations are investigated. The results of our calculations show that the disloca- tion density has a power law dependence on pressure with a power of 1.70 and that the dislo- cation density is proportional to pulse duration and sensitive to crystal orientation. These results are in very good agreement with the analytical predications of Meyers et al. [Meyers, M.A., Gregori, F., Kad, B.K., Schneider, M.S., Kalantar, D.H., Remington, B.A., Ravichan- dran G., Boehly, T., Wark, J., 2003. Laser-induced shock compression of monocrystalline copper: characterization and analysis. Acta Materialia 51, 1211–1228] and the experimental results of Murr [Murr, L.E., 1981. Residual microstructure-mechanical property relationships 0749-6419/$ - see front matter Ó 2005 Elsevier Ltd. All rights reserved. doi:10.1016/j.ijplas.2004.12.004 q This paper has not been published previously, that it is not under consideration for publication elsewhere, and that if accepted it will not be published elsewhere in the same form, in English or in any other language, without the written consent of the publisher. * Corresponding author. Tel.: +1 509 335 5855; fax: +1 509 335 4662. E-mail address: mutasem@mail.wsu.edu (M.A. Shehadeh). www.elsevier.com/locate/ijplas International Journal of Plasticity 21 (2005) 2369–2390