负泊松比效应防护结构抗爆抗冲击性能影响因素

doi:10.16183/j.cnki.jsjtu.2018.04.001

摘要/Abstract

摘要： 研究了宏观负泊松比效应蜂窝夹芯结构胞元壁厚、胞元层数和胞元泊松比等参数对弹体侵彻及水下抗爆等防护性能的影响.模拟弹体在空气中对宏观负泊松比蜂窝夹芯舰船防护结构的侵入和穿透过程，以及蜂窝夹芯防护结构在水下爆炸冲击载荷作用下的破坏形式.计算结果表明：单纯依靠结构性的被动防御无法应对高速或超高速弹体的侵彻问题；负泊松比效应蜂窝夹芯防护结构较传统防护结构具有良好的水下抗爆性能，且其水下抗爆性能随蜂窝胞元层数和胞元泊松比的增大而增强.

关键词: 负泊松比效应, 蜂窝夹芯结构, 舷侧防护, 数值模拟, 侵彻, 水下爆炸, 抗冲击

Abstract: Effects of different design parameters on auxetic cellular sandwich defensive structure, like thickness, size and Poisson’s ratio of the honeycombs are studied. The process of a missile impinging on, and penetrating auxetic cellular sandwich structure and the failure mode of the structure under underwater explosion shock are simulated by nonlinear finite element software. Numerical results indicate that structural passive defense has been unable to deal with high speed projectiles. Compared with traditional defensive structures, the auxetic cellular sandwich defensive structure has better anti-shock performance, which will be enhanced by increasing the layers and Poisson’s ratio of the honeycombs. The structure is more suitable for underwater explosion protection.

Key words: auxetic, cellular sandwich structure, broadside defense, numerical simulation, penetration, underwater explosion, anti-shock

中图分类号:

杨德庆，张相闻，吴秉鸿. 负泊松比效应防护结构抗爆抗冲击性能影响因素[J]. 上海交通大学学报（自然版）, 2018, 52(4): 379-387.

YANG Deqing,ZHANG Xiangwen,WU Binghong. The Influence Factors of Explosion and Shock Resistance Performance of Auxetic Sandwich Defensive Structures[J]. Journal of Shanghai Jiaotong University, 2018, 52(4): 379-387.

参考文献

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