Research on impact resistance of water-filled metal honeycomb sandwich beams

GAO Huiyao; ZHAO Zhenyu; ZHANG Lei; ZHANG Dujiang; ZHANG Zhiyang; LU Tianjian

doi:10.11883/bzycj-2023-0323

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GAO Huiyao, ZHAO Zhenyu, ZHANG Lei, ZHANG Dujiang, ZHANG Zhiyang, LU Tianjian. Research on impact resistance of water-filled metal honeycomb sandwich beams[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2023-0323

Citation:

GAO Huiyao, ZHAO Zhenyu, ZHANG Lei, ZHANG Dujiang, ZHANG Zhiyang, LU Tianjian. Research on impact resistance of water-filled metal honeycomb sandwich beams[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2023-0323

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Research on impact resistance of water-filled metal honeycomb sandwich beams

doi: 10.11883/bzycj-2023-0323

GAO Huiyao^{1, 2
,},
ZHAO Zhenyu^{1, 2
,
,},
ZHANG Lei³,
ZHANG Dujiang^{1, 2},
ZHANG Zhiyang^{1, 2},
LU Tianjian^{1, 2}

1.
State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, China
2.
MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, China
3.
Naval Academy, 210016 Beijing, China

Received Date: 2023-09-07
Rev Recd Date: 2024-01-23

Available Online: 2024-04-15

Abstract

Abstract

Based on the background of the further requirements for lightweight, explosion and impact resistance, and vibration reduction and noise reduction in the development of honeycomb structure in engineering science, a liquid metal honeycomb sandwich structure was proposed, and the preparation, impact experiments, and numerical simulation research of the liquid metal honeycomb sandwich structure were carried out. A preparation method for the liquid-filled metallic honeycomb sandwich structure was developed to meet the requirements of effective sealing of the internal liquid, adjustable liquid filling content, and controllable filling position within the structure. The first level light gas gun was used to launch foam bullets to simulate the explosion shock wave load, and the dynamic response of the structure under different impact velocities was obtained. At the same time, the commercial finite element software Abaqus/Explicit was used to carry out numerical simulation of the impact response of foam bullets in the metal honeycomb sandwich structure using the smooth particle hydrodynamics method, and further discussed the impact speed of foam bullets, the liquid content in the cell on the impact resistance and post-impact vibration characteristics of the structure. The results indicate that the liquid-filled structure exhibits superior impact resistance and post-impact vibration performance compared to the unfilled structure. Moreover, with an increase in the liquid content, the displacement response of the liquid-filled structure shows a monotonic decrease, while the damping ratio demonstrates an increasing trend. When the core is fully filled with liquid, the structure achieves optimal impact resistance performance, with a decrease in peak displacement of approximately 13.66% compared to the unfilled structure, and an increase in damping ratio by approximately 1.6 times. The aforementioned research establishes the foundation for the extensive application of liquid-filled metallic honeycomb composite structures in the field of impact protection.
- Metal honeycomb sandwich structure,
- Water-filled structure,
- Impact resistance,
- Vibration after impact

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References(23)

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