柱面内爆驱动下铅飞层对碰区动载行为的实验研究

张崇玉; 胡海波; 李庆忠

doi:10.11858/gywlxb.2013.06.014

柱面内爆驱动下铅飞层对碰区动载行为的实验研究

doi: 10.11858/gywlxb.2013.06.014

中国工程物理研究院流体物理研究所，四川绵阳 621999

基金项目: null

详细信息

通讯作者:
张崇玉 E-mail:zcy_7718@aliyun.com

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出版历程
- 收稿日期: 2011-12-08
- 修回日期: 2012-04-30
- 发布日期: 2013-12-15

Experimental Study on Dynamic Behavior of the Collision Region of Lead Tube Driven by Cylinderical Implosion

Institute of Fluid Physics, CAEP, Mianyang 621999, China

Funds: null

摘要

摘要: 采用光学阴影照相和脉冲X光照相，对柱面内爆对碰驱动下铅飞层对碰区凸起行为进行了实验研究。实验结果显示，铅飞层对碰区出现严重的射流状超前凸起，凸起行为表现出明显的失稳发展倾向。由于对碰产生高压，因此铅飞层对碰区可能完全熔化，变成名义上无剪切强度的流体。材料的低强度、低熔点（冲击熔化压力）性能是造成铅飞层对碰区出现射流状超前凸起现象的主要因素。还观察到对碰区出现3个超前凸起现象，初步分析可能是由于柱面滑移爆轰波对碰导致的波系反射、叠加造成的，具体原因还有待于进一步分析研究。
- 柱面内爆 /
- 爆轰波对碰 /
- 铅飞层 /
- 对碰区凸起 /
- 冲击熔化
Abstract: Dynamic behaviors of the collision region of lead tube driven by cylinderical implosion were experimentally investigated by high-speed frame photography and pulsed X-ray radiography. Experimental results showed that a leading jet-like spiking happened in the collision region, and the spiking demonstrated obvious instability tendency. Due to the existence of high pressure in the collision region, lead may be melted and transformed into liquid without shear strength. Shock-melting may be the main reason for the occurrence of the jet-like spiking in the collision region of lead tube. Additionally, three leading spikings observed in the collision region is reported for the first time. Preliminary analysis attributed the above phenomenon to the reflection and superposition of waves caused by head-on collision of two detonation waves, and the detailed reason should be further analyzed in future work.

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参考文献(14)

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