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W. Chang^1,2, L.L. Guo^1,5, H. Xi¹, X. Zhang¹, H.Y. Wang⁴, S.N. Xu³, L.C. Zeng², H. Xu¹ and F.C. Wang^1,2,3

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

doi:10.4203/ccp.104.235

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W. Chang, L.L. Guo, H. Xi, X. Zhang, H.Y. Wang, S.N. Xu, L.C. Zeng, H. Xu, F.C. Wang, "Manufacturing Geometry of Bearings and its Dynamic Effect on Reliability of Railway Bearings", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 235, 2014. doi:10.4203/ccp.104.235

Keywords: railroad car, axle roller bearings, waviness, vibration acceleration, finite element method, contact stress, service life, life factor, reliability.

Summary

The internal contact and vibration of railway bearings under the operating condition due to bearing geometry precision, such as the ring waviness in manufacturing, was analysed. A vibration model of axle bearings due to the different waviness features and the dynamic load under the operating condition was developed. Subsequently, the dynamic contact stress distribution of bearings due to manufacturing geometry was evaluated by the finite element model for the study of axle bearing assembly with the given dynamic contact load. Additionally, the dynamic load and the contact stress distribution on bearings was employed to estimate the service life of axle bearings. It was seen that both the dynamic load of rollers against ring and ring waviness could play a significant role in improving the reliability and the service life of axle bearings. It should be pointed out that the present work in this study was helpful to understand the tribological mechanism and identify the relevant technology of bearing design and manufacturing, as well as its application to railway.

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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 235 Manufacturing Geometry of Bearings and its Dynamic Effect on Reliability of Railway Bearings W. Chang^1,2, L.L. Guo^1,5, H. Xi¹, X. Zhang¹, H.Y. Wang⁴, S.N. Xu³, L.C. Zeng², H. Xu¹ and F.C. Wang^1,2,3 ¹iBT Group, School of Mechanical Engineering, Xi'an Jiaotong University, China ²Railway & Tribology Centre, School of Mechanical Engineering, Wuhan University of Science & Technology, China ³Dynamic Testing Department, National Centre of Bearing Technology, China ⁴Bradford Grammar School, United Kingdom ⁵Institute of Bearing Technology, United Manufacturing Groups (UMG), Yinchuan, China doi:10.4203/ccp.104.235 purchase the full-text of this paper Full Bibliographic Reference for this paper W. Chang, L.L. Guo, H. Xi, X. Zhang, H.Y. Wang, S.N. Xu, L.C. Zeng, H. Xu, F.C. Wang, "Manufacturing Geometry of Bearings and its Dynamic Effect on Reliability of Railway Bearings", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 235, 2014. doi:10.4203/ccp.104.235 Keywords: railroad car, axle roller bearings, waviness, vibration acceleration, finite element method, contact stress, service life, life factor, reliability. Summary The internal contact and vibration of railway bearings under the operating condition due to bearing geometry precision, such as the ring waviness in manufacturing, was analysed. A vibration model of axle bearings due to the different waviness features and the dynamic load under the operating condition was developed. Subsequently, the dynamic contact stress distribution of bearings due to manufacturing geometry was evaluated by the finite element model for the study of axle bearing assembly with the given dynamic contact load. Additionally, the dynamic load and the contact stress distribution on bearings was employed to estimate the service life of axle bearings. It was seen that both the dynamic load of rollers against ring and ring waviness could play a significant role in improving the reliability and the service life of axle bearings. It should be pointed out that the present work in this study was helpful to understand the tribological mechanism and identify the relevant technology of bearing design and manufacturing, as well as its application to railway. 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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