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Numerical simulation of corrosion fatigue crack propagation based on peridynamics theory
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Shaodong WEI1, Songrong QIAN2, Shiyun ZHOU1, Xin ZHENG1, Yi HOU1
Journal of Mechanical Strength | 2025, 47(4) : 70 - 78
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Journal of Mechanical Strength | 2025, 47(4): 70-78
• ·Fatigue·Damage·Fracture·Failure Analysis· •
Numerical simulation of corrosion fatigue crack propagation based on peridynamics theory
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Shaodong WEI1, Songrong QIAN2, Shiyun ZHOU1, Xin ZHENG1, Yi HOU1
Affiliations
  • 1.School of Mechanical Engineering, Guizhou University, Guiyang 550025, China
  • 2.State Key Laboratory of Public Big Data, Guizhou University, Guiyang 550025, China
Published: 2025-04-15 doi: 10.16579/j.issn.1001.9669.2025.04.009
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In order to simulate the crack propagation by corrosion fatigue, a coupled peridynamics corrosion-fatigue fracture model was proposed and applied to the simulation and analysis of crack propagation in A7N01P-T4 aluminum alloy.In this model, the interaction of hydrogen and stress was used to reflect the synergy between the two mechanisms of anodic dissolution and hydrogen cracking in corrosion, and the corrosion solution step and the mechanical solution step were coupled when quantifying the fracture behavior of the material due to corrosion. Since hydrogen reduces the plasticity of the material and brittle fracture occurs, a bonded peridynamics theory suitable for simulating isotropic brittle damage was used, and the relation between near-field force and elongation was described using an intrinsic force function for quasi-brittle materials that incorporates both linear and nonlinear mechanical behavior. The feasibility of the model is verified by comparing the simulation results with the test results of A7N01P-T4 aluminum alloy in 3.5% NaCl solution, and it is found that the results are in good agreement between them.

Peridynamics theory  /  Constitutive equation  /  Corrosion fatigue  /  Anodic dissolution  /  Crack propagation
Shaodong WEI, Songrong QIAN, Shiyun ZHOU, Xin ZHENG, Yi HOU. Numerical simulation of corrosion fatigue crack propagation based on peridynamics theory[J]. Journal of Mechanical Strength, 2025 , 47 (4) : 70 -78 . DOI: 10.16579/j.issn.1001.9669.2025.04.009
Funding
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  • Guizhou Provincial Science and Technology Program(20195802; 20192886)
Appendix
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Year 2025 volume 47 Issue 4
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Article Info
doi: 10.16579/j.issn.1001.9669.2025.04.009
  • Receive Date：2023-07-17
  • Online Date：2026-03-20
  • Published：2025-04-15
Article Data
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History
  • Received：2023-07-17
  • Revised：2023-10-14
Funding
Guizhou Provincial Science and Technology Program(20195802; 20192886)
Affiliations
    1.School of Mechanical Engineering, Guizhou University, Guiyang 550025, China
    2.State Key Laboratory of Public Big Data, Guizhou University, Guiyang 550025, China

Corresponding:

QIAN Songrong, E-mall:
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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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