ABSTRACT
This chapter examines a theoretical model is established to analyze the process of projectile penetrating water-backed plates by considering the adiabatic shear effect. A theoretical model was established to predict the residual velocity of fragment after penetrating the fluid cabin bulkhead. A simple calculation method of residual velocity of high-speed projectile after penetrating water-backed plates was derived with considering adiabatic shear effect of plate and energy absorption of water. The process of projectile penetrating water-backed plates can be divided into three stages: simple compression stage, compression-shear stage and adiabatic-shear stage. The deformation of water back plate is smaller than air back plate because of the incompressible of water, therefore the perforation energy absorption of air-backed plate is smaller. S. X. Xu et al. deduced the residual velocity of fragments after penetrating the front bulk of guarding fluid cabin the analytical study neglected the adiabatic shear effect.
