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Simplified calculation method for ultimate strength of I-type metal sandwich panels
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Zheng-jie LI1, 2, 3, 4, Jia-jun HU2, 3, 4, Xing-yu JIN2, 3, 4, Nan ZHAO2, 3, 4, Guo-qing FENG1
Journal of Ship Mechanics | 2026, 30(8) : 1377 - 1386
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Journal of Ship Mechanics | 2026, 30(8): 1377-1386
• Structural Mechanics •
Simplified calculation method for ultimate strength of I-type metal sandwich panels
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Zheng-jie LI1, 2, 3, 4, Jia-jun HU2, 3, 4, Xing-yu JIN2, 3, 4, Nan ZHAO2, 3, 4, Guo-qing FENG1
Affiliations
  • 1Harbin Engineering University, Harbin 150001, China
  • 2China Ship Scientific Research Center, Wuxi 214082, China
  • 3Taihu Loboratory of Deepsea Technological Science, Wuxi 214082, China
  • 4National Key Laboratory of Ship Structural Safety, Wuxi 214082, China
Published: 2026-08-15 doi: 10.3969/j.issn.1007-7294.2026.08.013
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Aiming at the ultimate bearing capacity problem of I-type metal sandwich panels under in-plane compressive loads, a series of nonlinear finite element calculations were carried out for I-type metal sandwich panels examples. The typical failure modes and ultimate bearing capacity were analyzed. The calculation results show that the main failure modes are yielding or overall collapse caused by local panel buckling. The compressive ultimate strength is highly correlated with the flexibility of the face plates and core plates. Based on this, a simplified method for calculating the ultimate stress by superimposing the stresses of the face sheets and core plates is proposed. Compared with the nonlinear finite element results, the simplified method yields a mean relative error of −5.53%, and a deviation of 5.45% from published model test data, indicating good accuracy. This method can provide technical support for the rapid prediction of the ultimate strength and the design of configuration parameters of I-type metal sandwich panels.

metal sandwich panels  /  failure mode  /  ultimate bearing capacity  /  simplified calculation method  /  nonlinear finite element
李政杰, 胡嘉骏, 金星瑜, 赵南, 冯国庆. I型金属夹芯板极限强度简化计算方法研究. 船舶力学, 2026 , 30 (8) : 1377 -1386 . DOI: 10.3969/j.issn.1007-7294.2026.08.013
Zheng-jie LI, Jia-jun HU, Xing-yu JIN, Nan ZHAO, Guo-qing FENG. Simplified calculation method for ultimate strength of I-type metal sandwich panels[J]. Journal of Ship Mechanics, 2026 , 30 (8) : 1377 -1386 . DOI: 10.3969/j.issn.1007-7294.2026.08.013
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Year 2026 volume 30 Issue 8
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Article Info
doi: 10.3969/j.issn.1007-7294.2026.08.013
  • Receive Date：2025-12-20
  • Online Date：2026-11-03
  • Published：2026-08-15
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  • Received：2025-12-20
Funding
Affiliations
    1Harbin Engineering University, Harbin 150001, China
    2China Ship Scientific Research Center, Wuxi 214082, China
    3Taihu Loboratory of Deepsea Technological Science, Wuxi 214082, China
    4National Key Laboratory of Ship Structural Safety, Wuxi 214082, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
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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