Study on Low-Cycle Fatigue Life of Base Metal of the Shock Absorber

Ai Li Li; Ri Gao; Ming De Sun; Xi Meng

doi:10.4028/www.scientific.net/AMR.936.1361

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 936Study on Low-Cycle Fatigue Life of Base Metal of...

Study on Low-Cycle Fatigue Life of Base Metal of the Shock Absorber

Abstract:

In this paper, by experiments on the low-cycle fatigue life of groups of base metal test specimens under constant total strain control, the number of cycles to fracture failure are obtained. The measured S-N curve of base metal is established and the fitted formulas based on three low cycle fatigue life prediction models are caculated according to the test data. The relationship between the low-cycle fatigue life and strain amplitude are concluded. The results of observation show that the elastic strain effect can be negligible in the range of strain amplitudes used for the study of low-cycle fatigue (0.01-0.08). In addition, the calculation suggests that the three-parameter power function is suitable for the low-cycle fatigue life prediction of the base metal because its prediction accuracy is higher than other methods. The research provides technology supports for life prediction and engineering application of the shock absorber.

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Periodical:

Advanced Materials Research (Volume 936)

Pages:

1361-1365

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.936.1361

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Online since:

June 2014

Authors:

Ai Li Li*, Ri Gao, Ming De Sun, Xi Meng

Keywords:

Fatigue Test, Life Prediction, Low-Cycle Fatigue, Shock Absorber

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* - Corresponding Author

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