Nonequivalent cumulative damage model

doi:10.3969/j.issn.1000-1565.2022.06.004

Journal of Hebei University(Natural Science Edition) ›› 2022, Vol. 42 ›› Issue (6): 580-588.DOI: 10.3969/j.issn.1000-1565.2022.06.004

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Nonequivalent cumulative damage model

SUN Zhenduo^1,2, LYU Songfeng¹, HOU Dongbo³, ZHANG Mingyang¹

1.School of Quality and Technical Supervision, Hebei University, Baoding 071002, China; 2.Hebei Technology Innovation Center for Lightweight of New Energy Vehicle Power System, Hebei University, Baoding 071000, China; 3.Beijing Institute of Remote Sensing Equipment, Beijing 100854, China

Received:2021-12-15 Published:2023-02-22

Abstract

Abstract: The fatigue test of No.45 steel under variable amplitude loading was carried out. Based on the experimental results, the prediction accuracy of Miner model, Manson-Halford model, Cortan-Dolan model and YE Duyi model is compared and analyzed. Based on Miner model and Manson-Halford model, two new nonequivalent cumulative damage models are constructed respectively with the principle of nonequivalent cumulative damage. The results show that, the prediction accuracy of Manson-Halford model is better than the other three models, and the prediction results of new nonequivalent cumulative damage models constructed in this paper are better than that of Manson-Halford model, and its calculation mode is relatively simple and suitable for engineering application.

Key words: fatigue, nonequivalent damage, cumulative damage model

CLC Number:

O346.2

SUN Zhenduo, LYU Songfeng, HOU Dongbo, ZHANG Mingyang. Nonequivalent cumulative damage model[J]. Journal of Hebei University(Natural Science Edition), 2022, 42(6): 580-588.

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Nonequivalent cumulative damage model

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