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Research on damage characteristics of air-backed composite foam sandwich panels subjected to underwater explosion impact
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Ze-yuan SONG1, 2, Peng-yu LOU4, Yong-chao XU4, Zhi-wu ZHENG5, Ying-gang LI1, 2, 3, Xiao-bin LI1, 2, 3
Journal of Ship Mechanics | 2026, 30(2) : 260 - 270
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Journal of Ship Mechanics | 2026, 30(2): 260-270
• Structural Mechanics •
Research on damage characteristics of air-backed composite foam sandwich panels subjected to underwater explosion impact
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Ze-yuan SONG1, 2, Peng-yu LOU4, Yong-chao XU4, Zhi-wu ZHENG5, Ying-gang LI1, 2, 3, Xiao-bin LI1, 2, 3
Affiliations
  • 1.Key Laboratory of High Performance Ship Technology (Wuhan University of Technology), Ministry of Education, Wuhan 430063, China
  • 2.School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, China
  • 3.Defense Science and Technology Key Laboratory of Ship Explosion Damage and Protection of Hubei Province (Wuhan University of Technology), Wuhan 430063, China
  • 4.Marine Design & Research Institute of China, Shanghai 200011, China
  • 5.Luoyang Ship Material Research Institute, Luoyang 471023, China
Published: 2026-02-15 doi: 10.3969/j.issn.1007-7294.2026.02.007
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In this paper, an underwater explosion acoustic-structure interaction numerical model of air-backed glass fiber reinforced composite foam sandwich panel is established using a nonlinear finite element software ABAQUS. The damage characteristics of composite foam sandwich panel under underwater explosion are investigated. Full-scale air-backed composite foam sandwich panel underwater explosion experiments were conducted in a large-scale explosion pool, which validated the accuracy of the acoustic-structure interaction numerical model. The results indicate that under underwater explosion loading, the air-backed composite foam sandwich panel primarily experiences delamination damage. The damage is concentrated at the center of the panel and along the surrounding boundaries. As the shock factor increases, the damage of the cohesive layer gradually extends inward from the surrounding boundaries. As the foam core density increases, the impact resistance of the composite foam sandwich panel progressively improves.

underwater explosion experiment  /  composite foam sandwich panel  /  acoustic-structure coupling  /  damage characteristics
Ze-yuan SONG, Peng-yu LOU, Yong-chao XU, Zhi-wu ZHENG, Ying-gang LI, Xiao-bin LI. Research on damage characteristics of air-backed composite foam sandwich panels subjected to underwater explosion impact[J]. Journal of Ship Mechanics, 2026 , 30 (2) : 260 -270 . DOI: 10.3969/j.issn.1007-7294.2026.02.007
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doi: 10.3969/j.issn.1007-7294.2026.02.007
  • Receive Date：2025-08-14
  • Online Date：2026-07-07
  • Published：2026-02-15
Article Data
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History
  • Received：2025-08-14
Affiliations
    1.Key Laboratory of High Performance Ship Technology (Wuhan University of Technology), Ministry of Education, Wuhan 430063, China
    2.School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, China
    3.Defense Science and Technology Key Laboratory of Ship Explosion Damage and Protection of Hubei Province (Wuhan University of Technology), Wuhan 430063, China
    4.Marine Design & Research Institute of China, Shanghai 200011, China
    5.Luoyang Ship Material Research Institute, Luoyang 471023, China
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表12种不同金属材料的力学参数
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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