DYNAMIC BEHAVIOR OF AN INSENSITIVE EXPLOSIVE COMPOSITION

The aim of this study is to develop a model able to describe the dynam ic behaviour of an explosive composition in the range of strain rates up to a few thousands per second. The experiments were realized at tem peratures between 0 and 80 degrees C, using a fast compression machine . The behaviour model is deduced from mechanical tests at lower strain rates. This constitutive law suggests that an extrapolation is possib le from the quasi-static to the dynamic domain. We use an analytical m ethod which includes the behaviour model and the stress waves paths in the sample to simulate the tests results. A good agreement is obtaine d between dynamic experiments and modelling.