Wound profiles in soap caused by penetration of high speed spheres

Abstract

As a first attempt at identifying a tissue model for use in wound ballistic simulations a study of the wound profiles in soap during deceleration of spherical steel projectiles has been carried out. Experimental data were compared to numerical calculations using the AUTODYN-2D code. We found that the AUTODYN-2D simulations show good agreement with experiment when a simple linear equation of state is used in conjunction with a Mieses strength model and a Pmin failure criterion. A detailed investigation using the numerical model showed that the deceleration of spherical steel projectiles were mainly dependent of the density of the soap, while the wound profiles were dependent of the mechanical strength material models used. We find that good material models of different tissues are important in order to do wound ballistic computations by using computer codes.