含能活性材料防护结构超高速撞击特性数值模拟研究

武强1,龚自正1,张庆明2,任思远2

振动与冲击 ›› 2021, Vol. 40 ›› Issue (11) : 202-210.

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (11) : 202-210.
论文

含能活性材料防护结构超高速撞击特性数值模拟研究

  • 武强1,龚自正1,张庆明2,任思远2
作者信息 +

Numerical simulation of hypervelocity impact characteristics of energetic active material protective structure

  • WU Qiang1, GONG Zizheng1, ZHANG Qingming2, REN Siyuan2
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文章历史 +

摘要

含能活性材料超高速撞击数值模拟研究对于新型空间碎片防护机理探索研究具有重要意义。采用AUTODYN动力学仿真程序,基于改进的Lee-Tarver点火增长模型,在验证计算模型有效性的基础上,开展球形弹丸超高速撞击含能活性材料防护结构数值模拟研究,对弹丸临界破碎速度、碎片云形貌特征及后墙损伤等进行分析。给出了铝合金弹丸超高速撞击PTFE/Al含能活性材料防护屏的临界破碎速度公式,得到弹丸直径、撞击速度和含能活性材料防护屏板厚对碎片云特征参数的影响规律,进一步揭示了含能活性材料防护结构超高速撞击条件下的新型防护机理。

Abstract

The numerical simulation for hypervelocity impact of energetic active material is of great significance for the exploration study on new type space debris protection mechanism.Here, adopting the improved Lee-Tarver ignition growth model and the dynamic simulation program AUTODYN, after verifying the effectiveness of the computing model, the numerical simulation for spherical projectile with hypervelocity to impact energetic active material protective structure was performed to analyze critical crushing velocity, debris cloud morphology features and back wall damage.The critical crushing velocity formula for aluminum alloy projectile with hypervelocity impacting PTFE / Al energetic active material protective shield was deduced.Influence laws of projectile diameter, impact velocity and thickness of energetic active material protective shield on characteristic parameters of debris cloud were obtained to further reveal the new type protection mechanism of energetic active material structure under condition of hypervelocity impact.

关键词

超高速撞击 / PTFE/Al含能活性材料 / 临界破碎速度 / 碎片云 / 防护机理

Key words

hypervelocity impact / PTFE/Al energetic active material / critical crushing velocity / debris cloud / protection mechanism

引用本文

导出引用
武强1,龚自正1,张庆明2,任思远2. 含能活性材料防护结构超高速撞击特性数值模拟研究[J]. 振动与冲击, 2021, 40(11): 202-210
WU Qiang1, GONG Zizheng1, ZHANG Qingming2, REN Siyuan2. Numerical simulation of hypervelocity impact characteristics of energetic active material protective structure[J]. Journal of Vibration and Shock, 2021, 40(11): 202-210

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