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Fatigue Life Prediction Under Multiaxial Variable Amplitude Loading Using A Stress-Based Criterion

Author

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  • Quoc Huy VU

    (Vietnamese-German University, Binh Duong, Viet Nam)

  • Dinh Quy VU

    (Hanoi University of Science and Technology, School of Transportation Engineering, Hanoi, Viet Nam)

  • Thi Tuyet Nhung LE

    (Hanoi University of Science and Technology, School of Transportation Engineering, Hanoi, Viet Nam)

Abstract

This article presents fatigue life calculations for metals under different multiaxial variable amplitude loading patterns. Developed from a stress-based multiaxial fatigue criterion, a damage parameter used in the fatigue life prediction method can capture correctly different damage mechanisms (proportional and non-proportional multiaxiality, mean stress, asynchronous and variable amplitude) of fatigue loading in the high cycle fatigue domain. The method is based on a reference S-N curve and a cumulative damage law. Assessment of the accuracy of the proposed method is carried out with three different materials from literature (EN-GS800-2 cast iron, 39NiCrMo3 steel and SAE 1045 steel) subjected to different patterns of variable amplitude loading (blocks, non-proportional asynchronous and proportional random loading). Results reveal that the prediction method is in good accordance with the experimental data.

Suggested Citation

  • Quoc Huy VU & Dinh Quy VU & Thi Tuyet Nhung LE, 2020. "Fatigue Life Prediction Under Multiaxial Variable Amplitude Loading Using A Stress-Based Criterion," International Journal of Manufacturing, Materials, and Mechanical Engineering (IJMMME), IGI Global, vol. 10(1), pages 33-53, January.
    • Handle: RePEc:igg:jmmme0:v:10:y:2020:i:1:p:33-53
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