Numerical simulation of steel/Kevlar laminated structures under explosive load

Composite laminated plates are being increasingly applied in protective structures, and numerical simulation of the dynamic response of such structures under explosion load is highly effective and essential. Based on the LS-DYNA software platform, the meso-structure finite element model of Kevlar fiber is established, and the feasibility of the modeling method is verified through the projectile penetration test. Then, the steel plate/Kevlar finite element model is established using the presented modeling method, and the explosive response simulation of the steel/Kevlar meso-structure finite element model is conducted. The results show that the meso-structure finite element model for fiber material can successfully simulate the process of projectile penetration as well as the failure mode of laminated plates under explosion load. Furthermore, comparison analysis between the results shows that Kevlar provides significant enhancement on the antiknock performance for steel plates.