Multiaxial fatigue reliability analysis of railroad wheels

被引：48

作者：

Liu, Yongming ^{[1
]}

Liu, Liming ^{[1
]}

Stratman, Brant ^{[1
]}

Mahadevan, Sankaran ^{[1
]}

机构：

[1] Vanderbilt Univ, Dept Civil & Environm Engn, Nashville, TN 37235 USA

来源：

RELIABILITY ENGINEERING & SYSTEM SAFETY | 2008年 / 93卷 / 03期

关键词：

stochastic; rolling contact fatigue; multiaxial fatigue; reliability;

D O I：

10.1016/j.ress.2006.12.021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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. (c) 2007 Published by Elsevier Ltd.

引用

页码：456 / 467

页数：12

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