坑道内挡板对化爆冲击波消减作用的数值模拟  

Numerical Simulation of the Pressure Attenuation of Chemical Shock Wave in Tunnel with Baffles

作　　者：朱建[1] 王曙光[1] 陆伟东[1] 

机构地区：[1]南京工业大学土木工程学院,江苏南京210009

出　　处：《爆破》2008年第2期26-29,共4页Blasting

摘　　要：在现代高技术战争条件下,精确制导武器在坑道入口附近爆炸,从而破坏防护门结构而使冲击波进入坑道成为可能。在坑道壁面的约束下,坑道内冲击波压力将衰减得很慢,且持续时间增加得很多。采用ANSYS/LA-DYNA动力有限元分析软件对常规武器在坑道内发生爆炸的工况进行了数值模拟,得出了坑道中冲击波峰值压力的衰减规律;提出了采用挡板对坑道中的冲击波进行消减的措施;进而研究了挡板的数量等参数对冲击波消减的规律。In the condition of high techology war today, it is possible for the precision guidance weapon to explode nearby the tunnel opening, destroy the structure of the protective door and let shock wave enter into the tunnel. Under the constrains of the tunnel wall, the peak value of the shock wave pressure will attenuation very slowly, but the duration increases very much. This article used the ANSYS/LA-DYNA dynamic finite element program to simulate the explosion of conventional weapon in the tunnel, elicited the attenuation principle of the shock wave＇s peak value in the tunnel. Then used the baffle to attenuation the shock wave, and studied the parameters such as the number of the baffle to recognise the rule about attenuating the shock wave.

关 键 词：坑道 冲击波 衰减 动力有限元 挡板 

分 类 号：O383.1[理学—流体力学]