刚性破片侵彻层合板运动模型

doi:10.12382/bgxb.2022.0552

摘要/Abstract

摘要： 为揭示杀伤元与超高分子量聚乙烯(UHMWPE)层合板相互作用机制，开展硬质合金破片侵彻UHMWPE层合板的的弹道试验，获得不同入射速度下破片穿透层合板后的剩余速度以及层合板在不同速度下的断裂失效形貌特征。在此基础上，基于波动理论和能量守恒原理建立刚性破片对层合板侵彻过程的能量耗散模型，分析破片侵彻过程中不同形式能量传递规律。研究结果表明：侵彻过程中层合板因剪切失效、拉伸和压缩变形产生的能量传递在各种形式耗散能量中占主导地位；与试验结果对比发现，该模型可有效描述破片对层合板的侵彻过程，可为有防护目标杀伤机理及弹道设计提供一定参考。

关键词: 冲击动力学, 侵彻, 超高分子量聚乙烯, 层合板, 能量守恒

Abstract: To reveal the interaction mechanism between the killing element and UHMWPE laminates, the ballistic test of cemented carbide fragments penetrating UHMWPE laminates was carried out. The residual velocity of the fragments after penetrating the laminates at different incident velocities and the fracture failure morphology of the laminates were obtained. Then based on the wave theory and energy conservation, the energy dissipation model of rigid fragments penetrating into the laminates was established, and the transfer laws of energy in different forms during fragment penetration were analyzed. It is found that the energy transfer caused by shear failure, and tensile and compression deformation of the laminates in the penetration process is dominant in various forms of dissipated energy. The comparison with the experimental results shows that the proposed model can effectively describe the penetration process of the fragment into the laminates, which can provide some insights into the killing mechanism of the protected target and trajectory design.

Key words: impactdynamics, penetration, UHMWPElaminates, energyconservation

中图分类号:

O346.5

董方栋, 杨耿, 王舒, 王志军, 冯志威. 刚性破片侵彻层合板运动模型[J]. 兵工学报, 2022, 43(9): 2350-2359.

DONG Fangdong, YANG Geng, WANG Shu, WANG Zhijun, FENG Zhiwei. Kinematic Model of Penetration of Rigid Fragments into UHMWPE Laminates[J]. Acta Armamentarii, 2022, 43(9): 2350-2359.

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