Multiaxial fatigue reliability analysis of railroad wheels

Yongming Liu, Liming Liu, Brant Stratman and Sankaran Mahadevan

Reliability Engineering and System Safety, 2008, vol. 93, issue 3, 456-467

Abstract: A general methodology for fatigue reliability degradation of railroad wheels is proposed in this paper. Both fatigue crack initiation and crack propagation life are included in the proposed methodology using previously developed multiaxial fatigue models by the same authors. A response surface method in conjunction with design of experiments is used to develop a closed form approximation of the fatigue damage accumulation with respect to the input random variables. The total fatigue life of railroad wheels under stochastic loading is simulated, accounting for the spatial and temporal randomness of the fatigue damage. The field observations of railroad wheel fatigue failures are compared with the numerical predictions using the proposed methodology.

Keywords: Stochastic; Rolling contact fatigue; Multiaxial fatigue; Reliability (search for similar items in EconPapers)
Date: 2008
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Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:93:y:2008:i:3:p:456-467

DOI: 10.1016/j.ress.2006.12.021

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