Simulation of HYBRID-III dummy response using three LS-DYNA blast methods

Anti-tank mines or improvised explosive devices are one of the lethal threats for occupants in armoured vehicles. Studies in minimising crew injuries and enhancing the protection level are vital due to the advancement of weapon technologies. Typical approach in validating these studies are by performing full scale or laboratory scaled mine blast experiments. However this method is costly and may involve occupational hazards due to the use of explosive materials. Numerical simulation offers viable alternative where commercial packages such as LS-DYNA can predict the outcome of blast related tests. In this paper, three blast model methods namely LOAD_BLAST_ENHANCED (LBE), Multi-Material Arbitary Langrangian Eulerian (MM-ALE) and LBE coupled with MM-ALE (LBE-ALE) were used to simulate vehicle occupants response in mine blast event. An anthropomorphic test dummy (ATD) finite element model was placed inside a capsule and was subjected to 6 kg TNT blast detonation. All three numerical methods were utilised in simulating this scenario. For model verification purposes, the result was compared with an experimental data from literature. It can be concluded that MM-ALE method computed a much higher response (force and acceleration data) compared to LBE-ALE and LBE methods