大板实验中TATB基炸药爆轰波的传播特征

Propagation Characteristics of TATB Based Explosive Detonation Wave in Bigplate Test

为研究点起爆条件下TATB基炸药爆轰波传播特征,用双灵敏度激光速度干涉仪(VISAR)对TATB基炸药进行了大板实验研究,并用DYNA2D程序对实验进行了模拟计算。结果表明,大板实验中TATB基炸药爆轰波传播过程中的压力剖面具有“二维结构”,且爆轰波传播方向由轴线方向逐渐向半径方向转变。实测铜飞片自由面的速度与计算值相吻合。

In order to investigate the propagation characteristics of TATB based explosive detonation wave under the point initiation condition, a double sensitivity VISAR system is used to measure the copper plate velocity in Bigplate test, and a two-dimensional hydrodynamic code DYNA2D is applied to simulate detonation waves in TATB based explosive. The results indicate that the pressure profiles show two dimensional structure and the detonation wave propagation transfers from axial direction to radius direction. The measured free surface velocity of copper plate agree well with calculated values.