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含能材料  2007 

PBX-9502炸药超压爆轰条件下的状态方程

Keywords: 爆炸力学,超压爆轰,数值模拟,状态方程

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Abstract:

分别使用标准JWL和Davis状态方程对炸药PBX-9502超压驱动飞片和球形聚心爆轰问题进行了数值模拟。对超压驱动飞片问题的模拟结果显示,采用标准JWL状态方程计算出的超压段压力、速度结果偏低,而采用Davis状态方程给出的计算结果与实验符合较好。在球形聚心爆轰波的数值模拟中,分别使用Davis状态方程和JWL状态方程计算了LiF飞层的自由表面位移历史,发现在相同时间间隔(1.5μs)内,用前者计算出的位移大于后者(约0.4mm)。

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