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L.L. Guo^1,2,3, H. Xi^1,2, W. Chang^1,3, J.S. Yan², X. Hu², X. Zhang^1,3, H.Y. Wang⁵, S.Y. Song⁴, S.N. Xu⁴, K.J. Diao⁶, H. Xu¹ and F.C. Wang^1,2,4

¹iBT Group, School of Mechanical Engineering, Xi'an Jiaotong University, China
²Railway & Tribology Centre, School of Mechanical Engineering, Wuhan University of Science & Technology, China
³Institute of Bearing Technology, United Manufacturing Groups (UMG), Yinchuan, China
⁴National Centre of Bearing Technology, China
⁵Bradford Grammar School, United Kingdom
⁶Sifang Rolling Stock Research Institute, Qingdao, China

doi:10.4203/ccp.104.234

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L.L. Guo, H. Xi, W. Chang, J.S. Yan, X. Hu, X. Zhang, H.Y. Wang, S.Y. Song, S.N. Xu, K.J. Diao, H. Xu, F.C. Wang, "Multi-Interfacial Contact Behaviours of an Axle Roller Bearing Assembly of Railroad Cars", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 234, 2014. doi:10.4203/ccp.104.234

Keywords: axle bearings, railroad cars, contact mechanics, finite element model, multi-interfacial contact model (MCM), clearance difference.

Summary

A complex multi-interfacial contact mechanics model of an axle roller bearing, assembly under the given loading condition, was developed by the finite element method (FEM). The journal deformation and the multi-interfacial contact problem of two bearings of an axle bearing system, mounted on the journal of wheel shaft, were also considered. Subsequently, the multi-interfacial contact mechanics model was applied for the study of axial and radial contact load and deformation, as well as stress distribution of axle bearing assembly with two cylindrical roller bearing units, under the given conditions of loading and design parameters. It was found that there was a significant effect of journal deformation both on the radial contact load of roller against ring and the axial contact loads of roller end against ring flange in the axle bearing assembly. Additionally, the well-controlled design parameters of interfacial clearance and clearance difference of two bearings can improve the uniformed contact performance of the axle bearing assembly. The multi-interfacial contact model can be effectively employed to identify the design and manufacturing technology, as well as its application to axle bearings of railway cars during the operating condition.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 104 PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 234 Multi-Interfacial Contact Behaviours of an Axle Roller Bearing Assembly of Railroad Cars L.L. Guo^1,2,3, H. Xi^1,2, W. Chang^1,3, J.S. Yan², X. Hu², X. Zhang^1,3, H.Y. Wang⁵, S.Y. Song⁴, S.N. Xu⁴, K.J. Diao⁶, H. Xu¹ and F.C. Wang^1,2,4 ¹iBT Group, School of Mechanical Engineering, Xi'an Jiaotong University, China ²Railway & Tribology Centre, School of Mechanical Engineering, Wuhan University of Science & Technology, China ³Institute of Bearing Technology, United Manufacturing Groups (UMG), Yinchuan, China ⁴National Centre of Bearing Technology, China ⁵Bradford Grammar School, United Kingdom ⁶Sifang Rolling Stock Research Institute, Qingdao, China doi:10.4203/ccp.104.234 purchase the full-text of this paper Full Bibliographic Reference for this paper L.L. Guo, H. Xi, W. Chang, J.S. Yan, X. Hu, X. Zhang, H.Y. Wang, S.Y. Song, S.N. Xu, K.J. Diao, H. Xu, F.C. Wang, "Multi-Interfacial Contact Behaviours of an Axle Roller Bearing Assembly of Railroad Cars", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 234, 2014. doi:10.4203/ccp.104.234 Keywords: axle bearings, railroad cars, contact mechanics, finite element model, multi-interfacial contact model (MCM), clearance difference. Summary A complex multi-interfacial contact mechanics model of an axle roller bearing, assembly under the given loading condition, was developed by the finite element method (FEM). The journal deformation and the multi-interfacial contact problem of two bearings of an axle bearing system, mounted on the journal of wheel shaft, were also considered. Subsequently, the multi-interfacial contact mechanics model was applied for the study of axial and radial contact load and deformation, as well as stress distribution of axle bearing assembly with two cylindrical roller bearing units, under the given conditions of loading and design parameters. It was found that there was a significant effect of journal deformation both on the radial contact load of roller against ring and the axial contact loads of roller end against ring flange in the axle bearing assembly. Additionally, the well-controlled design parameters of interfacial clearance and clearance difference of two bearings can improve the uniformed contact performance of the axle bearing assembly. The multi-interfacial contact model can be effectively employed to identify the design and manufacturing technology, as well as its application to axle bearings of railway cars during the operating condition. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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