Numerical simulation study on the influence of aluminum powder content on the power of blast fragmentation warhead

DOI:	10.11809/bqzbgcxb2023.11.019
Keywords:	blast fragmentation warhead; numerical simulation; aluminized explosive; shock wave; fragmentation
Abstract:	The numerical simulation of blast fragmentation warhead power plays an important guiding role in analyzing the combat effect and damage efficiency of blast fragmentation warhead. In order to study the effect of aluminum powder content on the power of blast fragmentation warhead, a simplified 1/4 scale model of the detonating warhead is established. The RDX based explosive with 0% to 30% aluminum powder content is used as the main charge of the detonating warhead, and the explosion process of blast fragmentation warhead is numerically simulated by AUTODYN and LS DYNA software. The results show that: with the increase of aluminum powder content in explosives, the average fragment velocity, fragment quantity and effective fragment proportion of the explosive presented a trend of first increase and then decrease, and the shock wave power parameters such as shock wave overpressure, positive pressure action time and specific impulse at the same measuring point also present a trend of first increase and then decrease. The aluminum powder content has a critical value. When the content of aluminum powder is greater than the critical value, the power of blast fragmentation warhead decreases and blast fragmentation warhead has the greatest power when aluminum powder content is 20%.
Issue:	Vol. 44 No. 11 (2023)
Published:	2023-11-28
PDF HTML