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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference 2006 vol.4 pt.A: Fluid-Structure Interaction >STUDY OF SHIELD DESIGN FOR SHOCK MITIGATION
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STUDY OF SHIELD DESIGN FOR SHOCK MITIGATION

机译：防震盾构设计研究

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Detonation of high explosive due to impact of fragments and flyer plates was modeled using hydrodynamic computer code. Included in the model were the warhead consisting of casing and high explosive (which is H-6 in this case). An 80-gram fragment simulated projectile (FSP) was used as the projectile. Flyer plates considered are single- and multi-layer structures. A reactive flow model which is able to capture the initiation, propagation and complete detonation or deflagration of detonation was used to predict the occurrence of complete detonation. Analyses were performed with several impact velocities to obtain the velocity beyond which complete detonation would occur. Shields have been used to mitigate mechanical shocks. It has been well established that shields with multi-layered materials with impedance mismatch would reduce shock levels significantly. A numerical study was conducted to derive an optimum shield design with this concept. The model used encompasses a warhead-canister system. It was assumed that one of the two adjacent warheads would detonate. The canister wall was made of multi-layered materials consisting of layers of materials made of metal and lucite. This material combination represents a medium degree of mismatch while still exhibiting certain amount of strength. The model determines the pressure level at explosive in the neighboring warhead. The pressure level was used to determine if detonation would occur, and provided a measure of effectiveness on the shields for shock mitigation.
机译：使用流体力学计算机代码对由于碎片和传单板的撞击而引起的高爆炸物的爆炸进行了建模。该模型中包括由套管和高炸药组成的弹头（本例中为H-6）。 80克碎片模拟弹丸（FSP）被用作弹丸。所考虑的传单板是单层和多层结构。使用能够捕获爆炸的引发，传播和完全爆炸或爆燃的反应流模型来预测完全爆炸的发生。用几种冲击速度进行分析以获得超过其发生完全爆轰的速度。防护罩已被用来减轻机械冲击。众所周知，具有阻抗不匹配的多层材料的屏蔽将显着降低冲击强度。进行了数值研究，以得出具有此概念的最佳屏蔽设计。所使用的模型包括一个弹头筒系统。假定两个相邻的弹头之一会爆炸。罐壁由多层材料制成，该多层材料由金属和萤石制成的材料层组成。这种材料组合代表中等程度的不匹配，同时仍显示出一定的强度。该模型确定相邻战斗部爆炸物的压力水平。压力水平用于确定是否会发生爆炸，并提供了防护罩在减轻冲击方面的有效性的度量。

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