摘要
为研究装药速度对爆炸冲击波场空间位置分布规律的影响,对不同速度装药的空中爆炸冲击波场进行了数值模拟,获取了动爆冲击波场演化历程图像。仿真结果表明:装药速度影响下爆炸冲击波波阵面的形状不再为球形,并且冲击波作用场呈现沿装药速度方向移动的现象,其移动量可以由波阵面所围区域几何中心的移动来表征,移动停止时几何中心的移动距离与装药速度大小近似成正比。对几何中心的移动距离开展了量纲分析,并在仿真数据的基础上建立了装药速度影响下几何中心移动距离的工程计算模型,校验结果表明,计算模型的精度较好,具有一定普适性。
In order to study the effect of charge velocity on spatial position distribution of an explosion shock wave field, this paper numerically simulates an air blast shock wave field at different charge velocities, and obtains evolution process images of the field. The simulation results show that the shape of the explosion shock wave front is no longer spherical under the influence of the charge velocity, and the shock wave action field moves along the direction of the charge velocity. The amount of its movement can be characterized by the movement of the geometric center of the area surrounded by the wave front. When the movement stops, the moving distance of the center is approximately proportional to the charge velocity. The dimensional analysis of the moving distance of the geometric center is carried out, and its engineering calculation model is established on the basis of the simulation data. The verification results show that the calculation model has good accuracy and certain universality.
作者
周至柔
蒋海燕
苏健军
ZHOU Zhirou;JIANG Haiyan;SU Jianjun(Xi’an Modern Chemistry Research Institute,China North Industries Group Corporation Limited,Xi’an 710065,China)
出处
《兵器装备工程学报》
CAS
CSCD
北大核心
2023年第2期15-21,共7页
Journal of Ordnance Equipment Engineering
关键词
空中爆炸
运动装药
冲击波特性
冲击波波阵面
数值计算
air blast
moving explosive charge
shock wave characteristics
shock wave front
numerical simulation
