J. Phys. IV France
Volume 110, September 2003
Page(s) 905 - 910

J. Phys. IV France
110 (2003) 905
DOI: 10.1051/jp4:20020809

Kinetics of mesostructure and reloading behavior of dynamically compressed solids

T.A. Khantuleva1, Yu.I. Mescheryakov2 and A.K. Divakov2

1  Saint-Petersburg State University, Russia
2  lnstitute of Problems of Mechanical Engineering RAS, Saint-Petersburg, Russia

Experimental study of shock reloading processes during the uniaxial strain loading of aluminum alloy targets reveals a dependence of reloading response of material on the particle velocity dispersion behavior. This response is found to be elastic-plastic in case the velocity dispersion at the plateau of compressive pulse equals zero. In the presence of the velocity dispersion the reloading response is pure plastic. This phenomenon is considered from the position of nonlocal hydrodynamic theory developed for description of high-non-equilibrium processes in heterogeneous media.

© EDP Sciences 2003