爆轰驱动飞片击靶波形精密控制技术  

Precise Control Technique for Flatness of Flyer under Explosive Loading

作　　者：金柯[1] 习锋[1] 谭叶[1] 刘晓海[1] 戴诚达[1] 蔡灵仓[1] 吴强[1] 

机构地区：[1]中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室,四川绵阳621999

出　　处：《高压物理学报》2013年第6期807-812,共6页Chinese Journal of High Pressure Physics

基　　金：国防基础科研计划(B1520110001);中国工程物理研究院科学技术发展基金(2010A0101001)

摘　　要：以有效装药长度模型为基础,通过沿径向向中心方向逐渐增加低阻抗材料缓冲层厚度的方法,实现了飞片击靶波形的精密控制。实验结果显示,在Ф80mm范围内飞片击靶波形差小于80ns,一维平面冲击波有效使用范围由原来的Ф40mm提升至Ф80mm,可以布置实验样品的面积提高了约3倍。以此爆轰加载装置为平台,测量了钽的冲击Hugoniot物态方程参数和无氧铜的高压声速数据,实验结果与以往的实验数据吻合得很好,表明该技术可用于材料多物理量联合测量的精密物理实验研究。Based on the effective charge length model, the flyer flatness under explosive loading is improved by increasing the thickness of the attenuation plate gradually along radial orientation. The experimental results show that the difference of shock wave front arrival time is less than 80 ns within a range of Ф80 mm. The area,which is suitable for setting multiple samples in shock compression experiments, is enlarged by about four times than before. Measurements on shock Hugoniot data of tantalum and sound velocities of copper were performed by using the developed explosive loading technique. The obtained experimental data are all in excellent agreement with previously published results, showing that the new explosive loading technique can be used for multi-physics parameter measurements in shock compression experiments.

关 键 词：爆轰加载 飞片 击靶波形 

分 类 号：O383[理学—流体力学] O521.3[理学—力学]