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Study on constraint of mixed mode crack and failure assessment diagram of pressure-bearing structure
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Xinting MIAO1, 2, Guoxu LIU1, Jinbo ZHANG1, Jian PENG1, 2, Fengfeng BIE1, 2
Journal of Mechanical Strength | 2025, 47(1) : 113 - 122
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Journal of Mechanical Strength | 2025, 47(1): 113-122
• Fatigue·Damage·Fracture·Failure Analysis •
Study on constraint of mixed mode crack and failure assessment diagram of pressure-bearing structure
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Xinting MIAO1, 2, Guoxu LIU1, Jinbo ZHANG1, Jian PENG1, 2, Fengfeng BIE1, 2
Affiliations
  • 1.School of Mechanical Engineering and Rail Transit, Changzhou University, Changzhou 213164, China
  • 2.Jiangsu Key Laboratory of Green Process Equipment, Changzhou University, Changzhou 213164, China
Published: 2025-01-15 doi: 10.16579/j.issn.1001.9669.2025.01.013
Outline
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The crack tip constraint and failure assessment diagram （FAD） in both plate specimen and pipe structure were studied to find out the compatibility and correlation of between the sample and piple. Based on the finite element method,constraints at crack tip of central cracked plate （CCP） specimen and cracked pressure pipe were obtained. It was found that crack tip constraint of CCP specimen under uniaxial loading is better matched with thick-walled pipeline under axial tensile loading, while CCP specimen under biaxial loading is better matched with thin-walled pipeline under internal pressure. In addition,the failure assessment diagram of CCP specimen and pipeline were obtained. It was found that FAD of CCP specimen is less related with thickness, when the thickness of pipe is within the range of thick wall or thin wall; was also pointed out that stress parallel to the crack direction increases the failure assessment curve（FAC） of the structure. Finally, it is found that FAC of the central crack plate specimen is higher than that of the pressure bearing pipeline, for the two structures with the same constraint level，and crack tip mixed mode degree and loading mode. That is, it is unsafe to use FAD of CCP specimen to evaluate pipeline.

Mixed mode crack  /  Constraint  /  Failure assessment diagram  /  Pressure structure
Xinting MIAO, Guoxu LIU, Jinbo ZHANG, Jian PENG, Fengfeng BIE. Study on constraint of mixed mode crack and failure assessment diagram of pressure-bearing structure[J]. Journal of Mechanical Strength, 2025 , 47 (1) : 113 -122 . DOI: 10.16579/j.issn.1001.9669.2025.01.013
Funding
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  • National Natural Science Foundation of China(52105141; 52075050)
  • Natural Science Research of Jiangsu Higher Education Institutions of China(21KJB460002)
  • Postgraduate Research & Practice Innovation Program of Jiangsu Province(SJCX24_1659)
  • Science and Technology Planproject of Changzhou(CJ20200080)
Appendix
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Year 2025 volume 47 Issue 1
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63
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Article Info
doi: 10.16579/j.issn.1001.9669.2025.01.013
  • Receive Date：2023-04-11
  • Online Date：2026-03-18
  • Published：2025-01-15
Article Data
Affiliations
History
  • Received：2023-04-11
  • Revised：2023-07-21
Funding
National Natural Science Foundation of China(52105141; 52075050)
Natural Science Research of Jiangsu Higher Education Institutions of China(21KJB460002)
Postgraduate Research & Practice Innovation Program of Jiangsu Province(SJCX24_1659)
Science and Technology Planproject of Changzhou(CJ20200080)
Affiliations
    1.School of Mechanical Engineering and Rail Transit, Changzhou University, Changzhou 213164, China
    2.Jiangsu Key Laboratory of Green Process Equipment, Changzhou University, Changzhou 213164, China

Corresponding:

MIAO Xinting, E-mail：
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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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