This paper investigates the tip characteristics of an oblique crack in the wheel-rail contact problem. The wheel-rail normal contact pressure and interfacial shear stress distributions, and the stress intensity factors (SIF), are studied for oblique cracks of different inclinations, and the variations in both contact stress distributions near the crack edge are simulated under normal and traction loads, respectively. Contact elements are employed to model the interactions between the wheel-rail contact surfaces and the crack surfaces, respectively. The effects of crack orientation, crack length, and contact distance on the contact stress distributions and stress intensity factors, and are investigated. The results indicate that a wheel-rail traction force reduces significantly as the contact point travels over the crack edge. Furthermore, fluctuations in and are very significant with regard to early squat propagation of cracks. The results also demonstrate that applying Carter’s contact model or the full slip contact model to the same wheel-rail contact crack problem yields significantly different stress intensity factor values.
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e-mail: chuan@mail.npust.edu.tw
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July 2004
Technical Papers
Partial Slip Rolling Wheel-Rail Contact With a Slant Rail Crack
Yung-Chuan Chen,
e-mail: chuan@mail.npust.edu.tw
Yung-Chuan Chen
Department of Vehicle Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan 91201
Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan 80424
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Jao-Hwa Kuang
Jao-Hwa Kuang
Department of Vehicle Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan 91201
Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan 80424
Search for other works by this author on:
Yung-Chuan Chen
Department of Vehicle Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan 91201
Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan 80424
e-mail: chuan@mail.npust.edu.tw
Jao-Hwa Kuang
Department of Vehicle Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan 91201
Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan 80424
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division June 26, 2003; revised manuscript received January 14, 2004. Associate Editor: L. Chang.
J. Tribol. Jul 2004, 126(3): 450-458 (9 pages)
Published Online: June 28, 2004
Article history
Received:
June 26, 2003
Revised:
January 14, 2004
Online:
June 28, 2004
Citation
Chen, Y., and Kuang, J. (June 28, 2004). "Partial Slip Rolling Wheel-Rail Contact With a Slant Rail Crack ." ASME. J. Tribol. July 2004; 126(3): 450–458. https://doi.org/10.1115/1.1759339
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