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利用BKW代码、JWL方程和LS-DYNA程序,研究了无约束、弱约束和强约束等三种战斗部约束条件下炸药爆轰产物密度随时间的变化关系,再结合爆轰产物HOM状态方程获得爆轰产物温度随时间的衰变函数。给出了战斗部爆轰产物温度的理论计算方法。研究表明,爆轰区内爆轰产物温度及其衰减速率并不均匀,战斗部炸药的约束条件对爆轰产物密度和温度有重要影响,强约束可以延缓爆轰产物密度和温度的衰减,相同情况下仅战斗部壳体厚度加倍并不会导致爆轰产物密度和温度的衰减情况同比例变化。
By using BKW code, JWL equation and LS-DYNA program, the detonation product densification density variation with time under the constraint conditions of unconstrained, weak and strong constraints was studied. Combined with the HOM equation of detonation products, Detonation product temperature decay function over time. The theoretical calculation method of warhead detonation temperature is given. The results show that the detonation temperature and the rate of detonation are not uniform in the detonation zone. The constraints of the explosive in the warhead have an important effect on the density and temperature of the detonation product. The strong constraint can delay the detonation density and temperature attenuation. In this case, doubling the thickness of the shell of the warhead alone does not result in a proportional change in the attenuation of detonation product density and temperature.