野战环境下便携式防爆墙抗爆性能研究

发布时间：2018-06-10 02:21

本文选题：野战环境 + 便携式防爆墙　；参考：《中北大学》2017年硕士论文

【摘要】：本文针对野战环境下弹药堆垛存储过程中的安全防护现状,对野战环境下便携式防爆墙在爆炸冲击波、破片和聚能射流三种毁伤元作用下的抗爆性能进行了研究,以期为我军的演习训练及在实战中的弹药堆垛安全防护提供一定参考。主要研究内容如下:(1)阐述了研究野战环境下便携式防爆墙抗爆性能的背景和意义,分析了野战环境下与防爆墙抗爆研究相关的三种毁伤元的形成与作用原理,总结了弹药爆炸的条件和起爆判据。(2)通过爆炸相似率建立缩比模型,对爆炸冲击波在便携式防爆墙作用下的绕射规律进行研究,研究了不同装药量、不同尺寸厚度、不同爆距对墙后绕射超压分布的影响,得到了不同情况下墙后绕射超压的分布规律,并在上述仿真结果的基础上,对墙后弹药进行了爆炸载荷作用下的动力学仿真,得到了弹丸在爆炸载荷作用下的压力曲线。(3)在研究便携式防爆墙抗破片侵彻时,首先对130mm杀爆榴弹进行了静态爆炸仿真研究,数值仿真得到了破片场的质量分布、初速分布和飞散角,然后在静态爆炸仿真结果的基础上,对填充不同介质、不同尺寸厚度防爆墙抗破片侵彻进行了数值模拟,得到了破片对不同填充介质和不同尺寸厚度防爆墙的侵彻深度。最后分析了破片剩余速度对弹药堆垛安全性的影响。(4)在研究便携式防爆墙抗杆式射流侵彻时,对便携式防爆墙抗杆式射流侵彻作用进行了数值模拟,得到了填充不同介质和不同尺寸厚度便携式防爆墙对降低杆式射流速度的作用效果,并对杆式射流穿透防爆墙后的剩余速度进行了后效作用分析。
[Abstract]:Aiming at the present situation of safety protection in ammunition stacking storage process in field environment, this paper studies the anti-explosion performance of portable explosion-proof wall under the action of blast wave, fragment and shaped jet in field environment. In order to provide some reference for our military exercise training and ammunition stacking safety protection in actual combat. The main research contents are as follows: (1) the background and significance of studying the anti-explosion performance of portable explosion-proof wall in field environment are expounded, and the formation and action principle of three kinds of damage elements related to anti-explosion research of explosion-proof wall in field environment are analyzed. In this paper, the condition of ammunition explosion and the initiation criterion are summarized. (2) through the similarity rate of explosion, the scaling model is established, and the diffraction law of explosion shock wave under the action of portable explosion-proof wall is studied, and the different charge quantity and different size thickness are studied. The influence of different explosion distance on the distribution of diffracted overpressure behind the wall is obtained, and the distribution law of the diffracted overpressure behind the wall is obtained under different conditions. On the basis of the above simulation results, the dynamic simulation of the ammunition behind the wall under the action of explosion load is carried out. The pressure curve of the projectile under explosive load is obtained. When studying the penetration resistance of the portable explosion-proof wall, the static explosion simulation of the 130mm explosion-killing grenade is carried out, and the mass distribution of the fragmentation field is obtained by numerical simulation. On the basis of the static explosion simulation results, the penetration resistance of explosion-proof walls with different media and thickness is simulated numerically. The penetration depth of the fragment to the explosion-proof wall with different filling media and different thickness is obtained. Finally, the influence of residual velocity of fragments on the safety of ammunition stacking is analyzed. The effect of filling different media and different thickness of portable explosion-proof wall on reducing the velocity of the rod jet is obtained. The residual velocity of the rod jet passing through the wall is analyzed.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU352.13

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