充压壳体在爆炸冲击波作用下的毁伤特性研究

发布时间：2018-07-20 11:14

【摘要】：为了得到充压壳体在爆炸冲击波作用下的毁伤规律,利用LS/DYNA软件,研究了充压壳体在爆炸冲击波作用下的毁伤模式。首先,利用数值模拟对比验证了柱壳在侧向爆炸载荷作用的三种毁伤模式;然后,考察了在炸药当量不变的情况下,不同壳体内压、不同炸距对壳体中心点位移的影响。结果表明:数值模拟结果与试验结果可以很好地吻合,能够准确反映壳体的毁伤特性;当壳体内压保持不变时,壳体中心点位移随着炸距的增大而减小;并且当炸距大于某一临界距离时,壳体中心点位移存在回弹区。当炸距保持不变时,壳体中心点位移随着内压的增大而减小;并且当壳体内压大于某一临界压力时,壳体中心点位移存在回弹区。研究结果可为毁伤评估及目标防护设计等提供了一定的参考。
[Abstract]:In order to obtain the damage law of the pressurized shell under the action of blast shock wave, the damage mode of the pressurized shell under the action of blast shock wave was studied by using LS / DYNA software. Firstly, three damage modes of cylindrical shell subjected to lateral explosion load are verified by numerical simulation, and then the effects of different internal pressure and different explosion distance on the displacement of the central point of the shell are investigated under the condition of constant explosive equivalent. The results show that the numerical simulation results are in good agreement with the experimental results and can accurately reflect the damage characteristics of the shell, and when the internal pressure of the shell remains constant, the displacement of the central point of the shell decreases with the increase of the explosion distance. And when the explosion distance is larger than a certain critical distance, the displacement of the central point of the shell has a springback zone. The displacement of the central point of the shell decreases with the increase of the internal pressure, and when the pressure is greater than a certain critical pressure, the displacement of the central point of the shell has a springback zone. The results can provide some reference for damage assessment and target protection design.
【作者单位】：国防科学技术大学理学院;中国人民解放军第63612部队;
【分类号】：O382

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