圆柱障碍条件下冲击波压力分布仿真研究  

Simulation study on shock wave pressure distribution under cylindrical obstacle condition

作　　者：赵永鑫 商飞[1] ZHAO Yongxin;SHANG Fei(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《兵器装备工程学报》2022年第10期84-89,共6页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金资助项目(11372143)。

摘　　要：根据冲击波测试场景构建了有限元仿真模型,数值计算不同爆心距、高度、直径的圆柱障碍物后方的冲击波压力,分析了这3种因素对圆柱障碍物后方冲击波压力的影响,并与无障碍物的情况进行比较。研究表明:紧邻圆柱障碍物后方的区域冲击波压力会有较大波动,随着距离增加,波动幅度从5%以上降到3%左右,最终与无障碍趋于一致;基于仿真数据及冲击波压力分布规律,给出了破片挡杆的选择以及传感器安装位置的建议。The finite element simulation model was constructed according to the shock wave test scene, and the shock wave pressure behind the cylindrical obstacle with different blast center distance, height and diameter is numerically calculated. The influence of these three factors on the shock wave pressure behind the cylindrical obstacle was analyzed and compared with the situation without obstacles. The results show that the shock wave pressure in the area close to the cylindrical obstacle will fluctuate greatly, and the fluctuation range will decrease from more than 5% to about 3% with the increase of distance, which is finally consistent with that without obstacle. Based on these, the selection of the fragment block bar and the suggestion of the sensor installation position were given.

关 键 词：冲击波压力 圆柱障碍物 破片挡杆 数值模拟 AUTODYN 

分 类 号：TJ06[兵器科学与技术—兵器发射理论与技术]