Reconstruction method of fatigue reliability <i>S</i>-<i>N</i> curves for railway wheel cast steel of grade B

Chen Lei; Zhang Zi-mao

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Chen Lei, Zhang Zi-mao. Reconstruction method of fatigue reliability S-N curves for railway wheel cast steel of grade B[J]. Journal of Traffic and Transportation Engineering, 2007, 7(1): 16-20.

Citation:

Chen Lei, Zhang Zi-mao. Reconstruction method of fatigue reliability S-N curves for railway wheel cast steel of grade B[J]. Journal of Traffic and Transportation Engineering, 2007, 7(1): 16-20.

Chen Lei, Zhang Zi-mao. Reconstruction method of fatigue reliability S-N curves for railway wheel cast steel of grade B[J]. Journal of Traffic and Transportation Engineering, 2007, 7(1): 16-20.

Citation:

Chen Lei, Zhang Zi-mao. Reconstruction method of fatigue reliability S-N curves for railway wheel cast steel of grade B[J]. Journal of Traffic and Transportation Engineering, 2007, 7(1): 16-20.

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Reconstruction method of fatigue reliability S-N curves for railway wheel cast steel of grade B

School of Civil and Architecture Engineering, Beijing Jiaotong University, Beijing 100044, China

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Author Bio:
Chen Lei(1957-), male, doctoral student, +86-10-51841784, zbbhcc416@sina.com

Zhang Zi-mao(1957-), male, professor, +86-10-51841784, clcy415@sina.com.cn
Received Date: 2006-08-20
Publish Date: 2007-02-25

Abstract

Abstract

In order to realize the reliability strength design, fatigue life prediction and reliability assessment at an arbitrary probabilistic level for railway wheel cast steel of grade B, a reconstruction method of fatigue reliability S-N curves was proposed, the fatigue limits and the S-N data were reconstructed by a technique of Monte-Carlo simulation with acceptable error range, the basic reliability curves in the middle and short life ranges were estimated by conventional method, the reliability S-N curves in the middle, short and long life ranges were established by probabilistic fatigue limit extrapolating method. Taking the practical situation of engineering application into account, the mileage reliability curves at arbitrary probabilistic level were deduced. The maximum simulation errors for the reconstructed data of fatigue limits and the S-N data are only 0.15% and 0.07% respectively, the extrapolated curves can cover the range of more than 10⁴ km, it meets production demand, which shows that the reconstructed method is feasible.
- vehicle engineering,
- wheel,
- cast steel,
- fatigue reliability S-N curves,
- reconstruction method,
- Monte-Carlo simulation

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References(12)

References

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