TATB基PBX的快速烤燃实验与数值模拟  

Numerical Simulation and Experimental Study of Fast Cook-off of TATB-based PBX Explosive

作　　者：张旭[1] 谷岩[1] 张远平[1] 李强[1] 龚晏青[1] 孙永强[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国防科技重点实验室,四川绵阳621900

出　　处：《含能材料》2010年第5期551-557,共7页Chinese Journal of Energetic Materials

基　　金：中国工程物理研究院发展基金重点项目(项目批准号:2009A0401024);中国工程物理研究院发展基金项目资助(项目批准号:2008B0201012)

摘　　要：根据TATB基高聚物黏结炸药(TATB基PBX)异常环境安全性特点(例如导弹发射失败),采用固体推进剂作为燃料开展了带2 mm厚约束钢壳的TATB基PBX快速烤燃小尺寸实验,模拟推进剂燃烧时具有一定约束炸药的响应情况,并且利用实验得到的炸药表面热流通量作为边界条件,采用高阶有限元法对炸药样品升温过程进行了数值模拟。实验中测量了炸药表面温度随时间变化情况,利用温度数据和Duhamel叠加原理计算得到炸药表面平均热流通量在其点火前为19.17 kW.m-2,在此平均热流通量条件下,带2 mm厚约束钢壳的TATB基PBX点火反应时间为95 s。研究结果表明,固体推进剂燃烧会在短时间内引起TATB基PBX点火燃烧反应,但不会发生猛烈的爆燃或爆轰现象。The fast cook-off of TATB-based PBX explosive with 2 mm thickness steel casing under solid propellant firing in a welldefined scenario such as failed launch of a missile was investigated. In addition,temperature distribution of the TATB-based PBX explosive under solid propellant firing was numerically investigated. Temperature rising was recorded and the heat flux of the explosive surface was calculated with the experimental data and Duhamel superposition principal, the average heat flux on the explosive surface under the solid propellant firing is 19.1 kW · m-2. Ignition time of TATB-based PBX explosive under the solid propellant firing is 95 s. The experimental results show that fast cook-off of TATB-based PBX explosive under solid propellant firing will not develop into deflagration or detonation.

关 键 词：爆炸力学 快速烤燃 固体推进剂 TATB基高聚物黏结炸药(TATB基PBX) 

分 类 号：TQ560.1[化学工程—炸药化工]