An experimental study on mechanical properties of energetic materials in triaxial compression due to impact

Abstract

An experimental apparatus of triaxial compressionl which is available to measure the mechanical response of explosives at different temperatures and strain rates, is developed by authors. Dynamic and static compressive experiments of Comp. B and TNT are performed and the material properties) such as compressive modulus, Poisson's ratio and yield strength etc., are obtained. The results show that there exist clear effects of temperature and strain rate for TNT and Comp. B. It also can be found that compressive modulus and strength of Comp. B are larger than that of TNT. In addition, a new method to determine the yield strength in triaxial loading state is presented.