内凹弧形蜂窝夹芯板低速弹道冲击试验与数值仿真

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Abstract For ballistic impact protection, 1060 aluminum alloy re-entrant circular (REC) and traditional re-entrant (RE) hexagonal honeycomb sandwich panels were designed and fabricated. The dynamic response and protection performance of the two types of honeycomb sandwich panels under low-speed ballistic impact load were studied and compared by using steel cylindrical projectile low-speed impact test and finite element (FE) numerical simulation. Using the verified FE model, the effects of ballistic speed on the maximum permanent compression, local Poisson’s ratio and energy absorption partition of two types of honeycomb sandwich panels under low-speed ballistic impact were simulated and analyzed. Finally, the effects of structural parameters such as circular cell wall radius and cell length of REC honeycomb cell on the low-speed ballistic impact response of sandwich panel were studied. The results show that compared with RE honeycomb, REC honeycomb sandwich panel has smaller maximum permanent compression and better ballistic performance under the same ballistic impact load, and the advantage is more obvious at low speed; With the decrease of cell length and circular cell wall radius, the ballistic performance of REC honeycomb sandwich panel can be further improved.

Key words： honeycomb material sandwich panel ballistic impact negative Poisson’s ratio numerical simulation

Received: 17 January 2022 Published: 28 March 2023

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	Articles by authors
	YANG Shu1
	2
	CHEN Pengyu1
	2
	JIANG Feng1
	2
	PEI Lianzheng1
	2
	QI Chang1
	2

Cite this article:

YANG Shu1,2,CHEN Pengyu1, et al. Low-speed ballistic impact test and numerical simulation on re-entrant circular honeycomb sandwich panels[J]. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(6): 255-262.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2023/V42/I6/255

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