Modeling Transverse Impact on Multi-Layer UHMWPE Soft Ballistic Armor Pack (SBAP)

Abstract

High performance UHMWPE soft ballistic sub-laminates ([0/90]􀯡, SBSL) are stacked to build a soft ballistic armor pack (SBAP) which can defeat hand gun projectiles. Transverse impact on a single layer soft ballistic sub-laminate is modeled with shell elements and is solved using LS-DYNA composite material model MAT54. The finite element model is validated using 1D fiber and 2D membrane theories. The validated FE models are then used to study the transverse impact and perforation behavior of a multi-layer soft ballistic armor pack (SBAP). Perforation mechanics of a SBAP consisting of 32 layers of [0/90] SK76/polyurethane soft ballistic sublaminates (SBSL) is presented.