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Ultra-high Cycle Fatigue Life Prediction Considering Loading Frequency
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Lili Shu1, Yonghui Chen3, Kai Pan4, Qiangang Xu1, Kai Guo1, Zhen Zhang1, 2, **
Chinese Journal of Solid Mechanics | 2024, 45(4) : 488 - 495
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Chinese Journal of Solid Mechanics | 2024, 45(4): 488-495
• Research Paper •
Ultra-high Cycle Fatigue Life Prediction Considering Loading Frequency
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Lili Shu1, Yonghui Chen3, Kai Pan4, Qiangang Xu1, Kai Guo1, Zhen Zhang1, 2, **
Affiliations
  • 1Department of Engineering Mechanics, School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan, 430074
  • 2Hubei Key Laboratory of Engineering Structural Analysis and Safety Assessment, Wuhan, 430074
  • 3National Key Laboratory of Strength and Structural Integrity, Aircraft Strength Research Institute of China, Xi'an, 710065
  • 4Chinese Aeronautical Establishment, Beijing, 100012
Published: 2024-08-25 doi: 10.19636/j.cnki.cjsm42-1250/o3.2024.012
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Ultra-high cycle fatigue experiments can be conducted using traditional testing methods such as electromagnetic vibration (30-3000 Hz) and ultrasonic vibration (20 kHz). Differences in fatigue life for the same material may arise when tested under varying loading frequencies. To fully utilize the ultra-high cycle fatigue life data obtained from different testing systems, the impact of loading frequency on the ultra-high cycle fatigue life of materials needs to be studied imperatively. This paper presents novel prediction models for ultra-high cycle fatigue life, taking into account loading frequency. The models incorporate the crack initiation life prediction model based on Tanaka's dislocation theory and the Paris crack growth life prediction model. The influence of loading frequency is integrated into effective stress and fatigue strength. The proposed models are verified using available very high cycle fatigue test data for titanium alloy TC17 and nickel-based superalloy GH4169 under different loading frequencies. The results show that the models proposed in this work can reasonably characterize the ultra-high cycle fatigue test data of materials under varying loading frequencies, establishing the correlation of fatigue life data under different loading frequencies.

loading frequency  /  very high cycle fatigue  /  life prediction
Lili Shu, Yonghui Chen, Kai Pan, Qiangang Xu, Kai Guo, Zhen Zhang. Ultra-high Cycle Fatigue Life Prediction Considering Loading Frequency[J]. Chinese Journal of Solid Mechanics, 2024 , 45 (4) : 488 -495 . DOI: 10.19636/j.cnki.cjsm42-1250/o3.2024.012
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Article Info
doi: 10.19636/j.cnki.cjsm42-1250/o3.2024.012
  • Receive Date：2024-03-11
  • Online Date：2026-04-01
  • Published：2024-08-25
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  • Received：2024-03-11
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Affiliations
    1Department of Engineering Mechanics, School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan, 430074
    2Hubei Key Laboratory of Engineering Structural Analysis and Safety Assessment, Wuhan, 430074
    3National Key Laboratory of Strength and Structural Integrity, Aircraft Strength Research Institute of China, Xi'an, 710065
    4Chinese Aeronautical Establishment, Beijing, 100012
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