战斗部爆轰产物温度效应数值模拟

 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。

Numerical Simulation of Temperature Effects on Warhead Explosion Products

Relation between mass density of explosive detonation products and time is studied under three kinds of confinement conditions,i. e. ,no confinement, weak confinement,and rigid confinement by coupling of BKW code,JWL code and LS-DYNA program,respectively. Associated with HOM equation of state,explosion products temperature decaying with time is inferred,and theoretical method is proposed to calculate explosion products temperature of warhead. Results imply that temperature and its decayiring rate in explosion products region are non-uniform. Confinement condition plays an important role in controlling of explosion products mass density and its temperature. Rigid confinement could postpone the decaying of the explosion products density and temperature,but the decaying time does not scale up in spite of the doubling of the shell thickness.