薄片炸药与固体靶冲量耦合的计算模型

发布时间：2018-06-23 00:48

本文选题：爆炸力学 + 冲量耦合　；参考：《爆炸与冲击》2017年01期

【摘要】：薄片炸药可用于模拟强脉冲X射线辐照下空间结构的响应,其与固体靶的冲量耦合作用是进行模拟载荷设计的基础。本文中基于有限元模拟技术,研究不同直径薄片炸药的边界稀疏作用和安装支座的反射作用对薄片炸药与固体靶冲量耦合的影响,结果表明:边界稀疏作用对薄片炸药的比冲量起到减弱的作用,由边界稀疏作用引起的薄片炸药比冲量的变化量和薄片炸药直径的倒数近似成线性关系;薄片炸药安装支座的反射作用对薄片炸药的比冲量起到增强的作用,由支座反射作用引起的薄片炸药比冲量的变化量和薄片炸药直径的平方近似成反比;随着薄片炸药直径的增加,薄片炸药比冲量趋于定值,边界稀疏作用和支座反射作用可以忽略;存在一个临界直径,当薄片炸药的直径为临界直径时,薄片炸药的边界稀疏作用和支座反射作用达到平衡,其比冲量大小和薄片炸药的直径为无穷大时的比冲量值相等。
[Abstract]:The thin plate explosive can be used to simulate the response of space structure under strong pulse X-ray irradiation. The coupling effect between the flake explosive and the solid target is the basis of the simulation load design. In this paper, based on finite element simulation technique, the effects of boundary sparseness of thin plate explosive with different diameters and reflection effect of mounting support on the coupling of thin plate explosive and solid target are studied. The results show that the effect of boundary sparseness on the specific impulse of thin plate explosive is weakened, and the variation of specific impulse of thin plate explosive caused by the effect of boundary sparsity is approximately linear to the reciprocal of the diameter of thin plate explosive. The specific impulse of the thin plate explosive is enhanced by the reflection of the mounting support. The change of the specific impulse of the thin plate explosive caused by the pedestal reflection is approximately inversely proportional to the square of the diameter of the thin plate explosive. With the increase of the diameter of thin plate explosive, the specific impulse of thin plate explosive tends to be fixed, the effect of boundary sparseness and pedestal reflection can be neglected, and there is a critical diameter, when the diameter of thin plate explosive is critical diameter, The boundary sparseness and the pedestal reflection of the thin plate explosive are balanced, and the specific impulse is equal to the specific impulse value when the diameter of the thin plate explosive is infinite.
【作者单位】：西北核技术研究所;
【分类号】：O38

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