运动装药空中爆炸冲击波特性研究

发布时间：2018-08-23 10:21

【摘要】：利用AUTODYN对不同速度装药的空中爆炸冲击波场进行数值计算,定量研究运动装药空中爆炸冲击波场特性。仿真结果表明:装药速度对冲击波场的时空分布有较大影响,爆炸初期冲击波场的移动速度和位移与装药速度正相关;动爆冲击波场为空间非均匀分布,超压值随着与装药运动方向夹角的增大近似呈余弦变化,由大于静爆超压值逐渐降低为小于静爆超压值,且变化幅度均随装药速度的增加而增大。最后,分析了动爆与静爆冲击波场的关联特性,建立了动爆冲击波超压的工程计算模型,模型计算结果与动爆试验结果及仿真计算结果吻合较好。
[Abstract]:The shock wave field of air explosion with different velocity charge was numerically calculated by AUTODYN, and the characteristics of air blast shock wave field of sports charge were quantitatively studied. The simulation results show that the charge velocity has a great influence on the space-time distribution of the shock wave field, the moving velocity and displacement of the shock wave field are positively correlated with the charge velocity at the initial stage of explosion, and the dynamic blast wave field is distributed inhomogeneously in space. The overpressure value changes approximately with the increase of the angle between the charge direction and the charge direction, and decreases gradually from the value greater than the static detonation overpressure to the value less than the static detonation overpressure, and the range of change increases with the increase of charge speed. Finally, the correlation characteristics between the dynamic explosion and the static blast wave field are analyzed, and the engineering calculation model of the dynamic explosion shock wave overpressure is established. The calculated results are in good agreement with the dynamic explosion test results and the simulation results.
【作者单位】：西安近代化学研究所;
【分类号】：O382.1

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