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Ultimate strength analysis of titanium alloy pressure spherical shell based on continuum damage mechanics
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Bo-wen ZHANG1, 2, Zheng-quan WAN1, 2, Qing ZHAO1, 2, Qiang XU1, 2, Ai-feng ZHANG1, 2
Journal of Ship Mechanics | 2024, 28(1) : 92 - 102
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Journal of Ship Mechanics | 2024, 28(1): 92-102
• Structural Mechanics •
Ultimate strength analysis of titanium alloy pressure spherical shell based on continuum damage mechanics
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Bo-wen ZHANG1, 2, Zheng-quan WAN1, 2, Qing ZHAO1, 2, Qiang XU1, 2, Ai-feng ZHANG1, 2
Affiliations
  • 1.China Ship Scientific Research Center, Wuxi 214082, China
  • 2.Taihu Laboratory of Deepsea Technological Science, Wuxi 214082, China
Published: 2024-01-20 doi: 10.3969/j.issn.1007-7294.2024.01.009
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In this paper, the Bonora damage model based on continuum damage mechanics was adopted to analyze the pressured spherical hulls of deep-sea manned submersibles. Firstly, the loading and unloading test of TA31 titanium alloy was committed to investigating the parameters of Bonora model. Then, a calibration method of model parameters was proposed, and the model parameters of TA31 titanium alloy were determined according to the experimental data. Finally, the Bonora model was embedded into the finite element software in the form of VUMAT subroutine, and the analysis of ultimate strength of titanium alloy pressured spherical hull was carried out. The results show that the method based on Bonora model can accurately simulate the failure mode and ultimate strength of the pressured spherical hull. In this model, the effects of yield strength, tensile strength and maximum plastic strain were considered in the constitutive relation of materials, and the physical meaning of structural failure was more explicit, which has guiding significance for the optimization and promotion of material properties.

titanium alloy  /  pressured spherical hull  /  continuum damage mechanics  /  Bonora model  /  numerical simulation
Bo-wen ZHANG, Zheng-quan WAN, Qing ZHAO, Qiang XU, Ai-feng ZHANG. Ultimate strength analysis of titanium alloy pressure spherical shell based on continuum damage mechanics[J]. Journal of Ship Mechanics, 2024 , 28 (1) : 92 -102 . DOI: 10.3969/j.issn.1007-7294.2024.01.009
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Article Info
doi: 10.3969/j.issn.1007-7294.2024.01.009
  • Receive Date：2023-07-19
  • Online Date：2026-03-21
  • Published：2024-01-20
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  • Received：2023-07-19
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Affiliations
    1.China Ship Scientific Research Center, Wuxi 214082, China
    2.Taihu Laboratory of Deepsea Technological Science, 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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