活性元含量对低附带毁伤弹药近场冲击波的影响

In order to improve the near-field damage power of the existing low collateral damage technology scheme, the ratio of material is optimized by adding different contents of pyrotechnic active materials into the heavy metal particle embedding layer of split-type low collateral damage bomb. The static explosion test of different contents of active material in the WC-Al-NaNO3-FKM composite embedding layer was carried out, and the shock wave pressure curve after explosion was measured by the free field pressure test system. The results show that the shock wave overpressure reaches the maximumwhen the active material content increases to 15%, and is increased by 57. 5% and 18. 2% at 37. 5CD (charge diameter) and 50CD, respectively; The maximum increase in specific impulse at 37. 5CD was 25. 7% when the active material content was increased to 20% . On the basis of the test results, the parameters of Miller item in the afterburning reaction model of active materialare determined by numerical simulation method, and the energy release law of afterburning reaction with different contents of active material and the relationship between the reactivity of active material component and its change with time were obtained. In an ideal situation, the afterburning reaction time decreases with the increase in the active material content. The research results provide a better technical strategy for the near-field enhanced damage element design of low collateral damage warhead.