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Strength and stability analysis on hydrostatic pressure structure with initial stress field
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Xiao-zhong XIE1, 2, 3, Xie ZHAO1, 2, 3, Shi-chao FENG1, 2, 3, Sha-gu CHEN1, 2, 3, Jia-jun HU1, 2, 3
Journal of Ship Mechanics | 2025, 29(3) : 465 - 473
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Journal of Ship Mechanics | 2025, 29(3): 465-473
• Structural Mechanics •
Strength and stability analysis on hydrostatic pressure structure with initial stress field
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Xiao-zhong XIE1, 2, 3, Xie ZHAO1, 2, 3, Shi-chao FENG1, 2, 3, Sha-gu CHEN1, 2, 3, Jia-jun HU1, 2, 3
Affiliations
  • 1.China Ship Scientific Research Center, Wuxi 214082, China
  • 2.State Key Laboratory of Deep-sea Manned Vehicles, Wuxi 214082, China
  • 3.Taihu Laboratory of Deepsea Technological Science, Wuxi 214082, China
Published: 2025-03-20 doi: 10.3969/j.issn.1007-7294.2025.03.011
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Aiming at the initial stress field generated by welding of ring-ribbed cylindrical shell structures with initial geometric defects after shape correction, this paper presents the study on the influence of initial stress field on the strength and stability of ring-ribbed cylindrical shell structures under the premise of considering geometric nonlinearity caused by large deformation. The finite element model of ring-ribbed cylindrical shell with initial geometric defects was constructed by using ANSYS software and the initial stress field was calculated. The strength and stability of ring-ribbed cylindrical shell with initial geometric defects and stress field were solved by arc length method. The comparison between the experimental results and the calculated results verifies the validity of the model. The analysis shows that the ultimate bearing capacity of the ring-ribbed cylindrical shell under hydrostatic external pressure is slightly reduced, and the regularity of the instability waveform is reduced, but the failure position remains unchanged.

initial geometric imperfection  /  stress field  /  ring-stiffened cylindrical shell  /  hydrostatic pressure  /  strength  /  stability  /  finite element model
Xiao-zhong XIE, Xie ZHAO, Shi-chao FENG, Sha-gu CHEN, Jia-jun HU. Strength and stability analysis on hydrostatic pressure structure with initial stress field[J]. Journal of Ship Mechanics, 2025 , 29 (3) : 465 -473 . DOI: 10.3969/j.issn.1007-7294.2025.03.011
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Year 2025 volume 29 Issue 3
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Article Info
doi: 10.3969/j.issn.1007-7294.2025.03.011
  • Receive Date：2024-09-22
  • Online Date：2026-03-24
  • Published：2025-03-20
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  • Received：2024-09-22
Funding
Affiliations
    1.China Ship Scientific Research Center, Wuxi 214082, China
    2.State Key Laboratory of Deep-sea Manned Vehicles, Wuxi 214082, China
    3.Taihu Laboratory of Deepsea Technological Science, Wuxi 214082, China
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Citations
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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