Study on jet formation characteristics of PTFE/Al composite energetic liner

This study aims to elucidate the characteristics of composite energetic jet formation. Employing the finite element software, a numerical simulation was performed to investigate the process of jet formation in a composite energetic liner, which integrates PTFE/Al reactive material with an Al metal liner. A comparative analysis was conducted between the jet formation process of the composite energetic liner and that of conventional energetic liners, the simulation revealed that material stratification occurs during the jet formation process of the composite energetic liner, with the high-temperature region being concentrated in the metal at the jet's head. The study further examined the impact of the cone angle and relative thickness of the composite energetic liner on the jet's morphology and temperature distribution during the collapse formation process. It was determined that the cone angle predominantly influences the jet velocity and the distribution of the metal jet, with less significant variance in temperature distribution. The relative thickness of the composite liner significantly affects the material stratification and modifies the temperature distribution within the jet. The outcomes of this research contribute to the practical application of composite energetic liners and offer a foundational basis for further investigation into the damage effects of composite energetic warheads against airfield runway targets.