A full-scale 3-D dynamic finite element (FE) model is created to solve the elastic-plastic wheel-rail rolling contact over rough surfaces under different friction forces. Both normal and tangential loads are applied properly. A bi-linear plastic material model is introduced and the real wheel and rail head geometries are simulated. The rolling of a drive wheel with full friction exploitation over a rough contact surface is analyzed in this paper. The stress distributions at the zone with rough surface are derived. From the results at a selected instant, it is found that roughness significantly increases the stress level of the surface layer. Furthermore, plasticity can greatly reduce stress peaks and change stress distributions. The maximum shear stress distribution at the rough surface is also analyzed to assess effects of roughness on fatigue crack initiation.
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STLE/ASME 2008 International Joint Tribology Conference
October 20–22, 2008
Miami, Florida, USA
Conference Sponsors:
- Tribology Division
ISBN:
978-0-7918-4336-9
PROCEEDINGS PAPER
An Investigation on Elastic-Plastic Rolling Contact Over Rough Surfaces Using a 3-D Dynamic Finite Element Model
Xin Zhao,
Xin Zhao
Delft University of Technology, Delft, The Netherlands
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Zili Li,
Zili Li
Delft University of Technology, Delft, The Netherlands
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Rolf Dollevoet
Rolf Dollevoet
ProRail, Utrecht, The Netherlands
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Xin Zhao
Delft University of Technology, Delft, The Netherlands
Zili Li
Delft University of Technology, Delft, The Netherlands
Rolf Dollevoet
ProRail, Utrecht, The Netherlands
Paper No:
IJTC2008-71091, pp. 553-555; 3 pages
Published Online:
June 5, 2009
Citation
Zhao, X, Li, Z, & Dollevoet, R. "An Investigation on Elastic-Plastic Rolling Contact Over Rough Surfaces Using a 3-D Dynamic Finite Element Model." Proceedings of the STLE/ASME 2008 International Joint Tribology Conference. STLE/ASME 2008 International Joint Tribology Conference. Miami, Florida, USA. October 20–22, 2008. pp. 553-555. ASME. https://doi.org/10.1115/IJTC2008-71091
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