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Study on A508 steel constraint related fracture toughness of nuclear power main pipeline under different vertical earthquake loads
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Jie YANG1, Hongwei YUAN1, 2, Guoliang GUO3, Wei CUI1, Haofeng CHEN4
Journal of Mechanical Strength | 2025, 47(2) : 1 - 9
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Journal of Mechanical Strength | 2025, 47(2): 1-9
• Fatigue∙Damage∙Fracture∙Failure Analysis •
Study on A508 steel constraint related fracture toughness of nuclear power main pipeline under different vertical earthquake loads
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Jie YANG1, Hongwei YUAN1, 2, Guoliang GUO3, Wei CUI1, Haofeng CHEN4
Affiliations
  • 1.School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
  • 2.Anhui Ronds Science & Technology Incorporated Company, Hefei 230088, China
  • 3.Yanfeng Automotive Intelligent Safety System Co., Ltd., Shanghai 201315, China
  • 4.Key Laboratory of Pressure Systems and Safety, Ministry of Education, East China University of Science and Technology,Shanghai 200237, China
Published: 2025-02-15 doi: 10.16579/j.issn.1001.9669.2025.02.001
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Considering cracks of various length and depth (various constraints) on the nuclear power main pipeline as the research object, through the mass acceleration application method, applying vertical load of 5 earthquake intensities and 3 real earthquakes to the nuclear power main pipeline under varying constraints respectively, and based on a method to determine the constraint related to fracture toughness of the actual structure, the calculation of constraint related fracture toughness was performed, the various constraint under various vertical earthquake loads related crack toughness was systematically studied.The results show that under the same constraint, the crack opening force curve shifts to the left with the increase of earthquake intensity, and the constraint related fracture toughness decreases gradually.With an increased crack length, the effect of earthquake intensity on constraint related fracture toughness becomes more obvious.With an increased crack depth, the effect of earthquake load on constraint related fracture toughness firstly becomes obvious, and then becomes insignificant.Under different constraints, the influence trend of the real earthquake load on constraint related fracture toughness is the same as that of the earthquake intensity, and has a certain relation with the magnitude and earthquake acceleration time history curve.

Constraint  /  Fracture toughness  /  Vertical earthquake load  /  Nuclear power main pipeline
Jie YANG, Hongwei YUAN, Guoliang GUO, Wei CUI, Haofeng CHEN. Study on A508 steel constraint related fracture toughness of nuclear power main pipeline under different vertical earthquake loads[J]. Journal of Mechanical Strength, 2025 , 47 (2) : 1 -9 . DOI: 10.16579/j.issn.1001.9669.2025.02.001
Funding
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  • National Natural Science Foundation of China(51975378; 52375154; 52311530067)
Appendix
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Year 2025 volume 47 Issue 2
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61
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Article Info
doi: 10.16579/j.issn.1001.9669.2025.02.001
  • Receive Date：2023-05-28
  • Online Date：2026-03-18
  • Published：2025-02-15
Article Data
Affiliations
History
  • Received：2023-05-28
  • Revised：2023-07-05
Funding
National Natural Science Foundation of China(51975378; 52375154; 52311530067)
Affiliations
    1.School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
    2.Anhui Ronds Science & Technology Incorporated Company, Hefei 230088, China
    3.Yanfeng Automotive Intelligent Safety System Co., Ltd., Shanghai 201315, China
    4.Key Laboratory of Pressure Systems and Safety, Ministry of Education, East China University of Science and Technology,Shanghai 200237, China

Corresponding:

YANG Jie, E-mail：
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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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