膨胀石墨燃爆剂JWL状态方程参数拟合  

Parameters fitting for the JWL EOS of expanded graphite bums agent

作　　者：许兴春[1] 高欣宝[1] 张俊坤[1] 

机构地区：[1]军械工程学院,河北石家庄050003

出　　处：《爆炸与冲击》2015年第1期124-129,共6页Explosion and Shock Waves

摘　　要：用LS-DYNA对膨胀石墨燃爆剂爆炸过程进行数值模拟时,需要提供膨胀石墨燃爆剂的JWL状态方程的参数。把凝聚炸药等熵线物态方程作为目标方程,通过差分进化法拟合得出膨胀石墨燃爆剂JWL状态方程的参数。通过圆筒实验对所求得的参数进行验证,结果表明,理论值与实验值最大误差不超过3.3%,能够满足膨胀石墨燃爆剂爆炸模拟研究的需要。The simulation of the explosion of expanded graphite bums agent requires the determination of the parameters in the JWL EOS of expanded graphite bums agent. The JWL EOS of expanded graphite bums agent are fitted through the differential evolution method taking condensed explosives isentropic line EOS as the target equation. The cylinder test results show that the maximum error be- tween the theoretical value and experimental value is less than 3.3%, meeting the needs of the ex- panded graphite bums agent explosion simulation research.

关 键 词：爆炸力学 JWL状态方程 LS-DYNA 膨胀石墨 

分 类 号：O389[理学—流体力学] TJ5[理学—力学]