沟槽结构飞片的波剖面测量与数值模拟研究  

Velocity Profile Measurement of a Flyer with Grooving Structure and Its Numerical Simulation

作　　者：何真[1] 刘寿先[2] 李泽仁[2] 赵锋[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 [2]中国工程物理研究院流体物理研究所,四川绵阳621999

出　　处：《高压物理学报》2014年第5期519-524,共6页Chinese Journal of High Pressure Physics

基　　金：中国工程物理研究院科学技术发展基金(2011B0401007)

摘　　要：应用线、面结合激光速度干涉仪(VISAR)技术,对点爆散心爆轰产物驱动带沟槽飞片的自由面速度进行了实验测量,获得了飞片表面长12mm的一条线上点的速度-时间历程,以及飞片起跳后1、3、5μs 3个特定时刻飞片表面10 mm范围内速度的二维分布。同时用LS-DYNA对实验模型进行了数值模拟,所得结果与实验测量结果符合较好,表现出线、面结合VISAR技术在研究非均匀材料动态响应上的应用潜力。The line-image VISAR was applied in a detonation experiment, in which a flyer with Zigzag trenches was driven by a divergent detonation wave. The free surface velocity of a 12 mm-long line on the flyer was obtained,and the velocity distribution on the free surface was also recorded at 1,3,5μs after the free surface started moving. Finally,the expe：rimental model was simulated using LS-DYNA program, the results are in good agree with the experimental results, which prove the potential of Line- Image VISAR in heterogeneous experiment.

关 键 词：激光速度干涉仪(VISAR) 线成像 面成像 爆轰驱动 

分 类 号：O384[理学—流体力学]