Multiaxial high-cycle fatigue failure and life prediction based on critical plane method

• Published in: International journal of damage mechanics Vol. 31; no. 8; pp. 1165 - 1186
• Main Authors: Wang, Yang, Sun, Guo-Qin, Liu, Jinfeng, Liu, Xiaodong, Shang, Deguang
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01-08-2022
• Subjects: fatigue failure criterion; life prediction method; Multiaxial fatigue; high cycle; maximum equivalent stress
• ISSN: 1056-7895; 1530-7921
• DOI: 10.1177/10567895221091308

Multiaxial high-cycle fatigue failure criterion and life prediction is important for structural components under complex low stress. A new multiaxial high-cycle fatigue damage parameter based on the plane of maximum shear stress is proposed, which includes the maximum shear stress amplitude, normal stress amplitude and maximum equivalent normal stress. The maximum equivalent normal stress is defined in the form of SWT stress function considering the influence of mean stress. The feasibility of the proposed failure criterion and life prediction model is verified by test data of different materials. The predicted results show that the life prediction error of the proposed fatigue model is basically within three times by comparing with McDiarmid, Matake, Crossland and Papadopoulos fatigue models.