A new computational material model has been implemented using Puff equation of state that considers compressive shock state. The material model has been considered from commercial hydrocode AUTODYN and implemented to analyze the ballistic impact response of light weight composites such as Kevlar. The ability of the Kevlar target of 2.4mm thickness to withstand ballistic impact of STAGNAG-2920 fragment simulating projectile (FSP) (1.1g) has been investigated. Ballistic limit, damage patterns and residual velocities are predicted and found good agreement with experimental results reported. The residual velocity at ballistic limit from the current study is close to zero according to standard definition of ballistic limit.

Keywords: Ballistic limit, Hydrocode, AUTODYN, Impact, Kevlar.