连续爆炸冲击下负泊松比超材料防护结构性能研究

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摘要连续爆炸冲击现象在重大爆炸事故中经常出现，这对防护结构的性能提出更高要求。本文对负泊松比超材料防护结构在连续爆炸冲击作用下的抗爆性能开展研究。首先探讨了连续爆炸载荷的特点及作用方式。其次，采用数值仿真方法分析了海洋平台的负泊松比超材料防爆墙和负泊松比超材料双层横舱壁在连续爆炸冲击下的变形模式和应变分布，揭示了连续爆炸冲击下该类超材料结构的二次变形规律和毁伤机理。研究发现，內爆和外爆连续冲击载荷的作用方式并不相同，负泊松比超材料结构在连续外部及内部爆炸冲击时分别出现了局部坍塌挤压吸能、结构密实化整体弯曲等两种不同变形模式。研究结果可为防护结构连续抗爆设计提供参考。

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	杨德庆

关键词 ：连续爆炸冲击, 外爆, 內爆, 负泊松比结构, 变形模式, 毁伤机理

Abstract：The phenomenon of continuous blasts often occurs in serious accidents, which puts forward higher requirements for the performance of protective structures. Therefore, the study on auxetic(the negative Poisson's ratio) protective structure under continuous explosive impact is carried out. The pressure, deformation mode and strain distribution of auxetic blast wall and the auxetic double bulkhead under continuous impact are analyzed. The damage mechanism under continuous explosive impact is revealed. It is found that the continuous impact forms of internal and external are different, which carried out different deformation modes of auxetic protective structures. The analysis of auxetic protective structure under continuous explosive impact can provide reference for the design of protective structure.

Key words： continuous explosive impact internal blast external blast auxetic structure deformation mode damage mechanism;

收稿日期: 2020-09-10 出版日期: 2022-01-28

引用本文:

罗放，杨德庆. 连续爆炸冲击下负泊松比超材料防护结构性能研究[J]. 振动与冲击, 2022, 41(2): 74-78.
LUO Fang，YANG Deqing. Protection performance analysis of auxetic structures under continuous explosive impact. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(2): 74-78.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I2/74

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