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E. Jie¹, J.Y. Kim¹, D.H. Hwang¹, J.H. Lee¹, K.J. Kim² and J.C. Kim²

¹Department of Mechanical and System Design Engineering, Hongik University, South Korea
²Korea Railway Research Institute, Uiwang, Gyeonggi, South Korea

doi:10.4203/ccp.110.231

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E. Jie, J.Y. Kim, D.H. Hwang, J.H. Lee, K.J. Kim, J.C. Kim, "An Experimental Study of Squeal Noise Characteristics for Railways using a Scale Model Test Rig", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 231, 2016. doi:10.4203/ccp.110.231

Keywords: squeal noise, negative damping, wireless data transmission, contact element.

Summary

Squeal noise is a harsh, high-pitched sound that occurs when railways run on sharply curved tracks. The cause of the squeal noise is known to be the transient lateral traction force between the wheel and rail. Field measurements are too difficult to control the parameters. Thus, a scaled test rig had to be made in order to investigate the generating mechanism of squeal noise. The unique feature of our test rig, HSTR (the Hongik Squeal Testing Rig), is that the degrees of freedom of its wheelset are similar to those of the real railway. The attack angle and running speed of the rail roller were controlled in real time for simulating the transient characteristic of the driving curve. The environment conditions, such as the given axle load, running speed, and wheel's yaw angle have been identified for generating squeal noise and the squeal noise itself has been measured. The relation between wheel creepage and creep force in a lateral direction, and the characteristic of the squeal noise have been investigated, where the results have been verified by finite element method.

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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: 110 PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 231 An Experimental Study of Squeal Noise Characteristics for Railways using a Scale Model Test Rig E. Jie¹, J.Y. Kim¹, D.H. Hwang¹, J.H. Lee¹, K.J. Kim² and J.C. Kim² ¹Department of Mechanical and System Design Engineering, Hongik University, South Korea ²Korea Railway Research Institute, Uiwang, Gyeonggi, South Korea doi:10.4203/ccp.110.231 purchase the full-text of this paper Full Bibliographic Reference for this paper E. Jie, J.Y. Kim, D.H. Hwang, J.H. Lee, K.J. Kim, J.C. Kim, "An Experimental Study of Squeal Noise Characteristics for Railways using a Scale Model Test Rig", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 231, 2016. doi:10.4203/ccp.110.231 Keywords: squeal noise, negative damping, wireless data transmission, contact element. Summary Squeal noise is a harsh, high-pitched sound that occurs when railways run on sharply curved tracks. The cause of the squeal noise is known to be the transient lateral traction force between the wheel and rail. Field measurements are too difficult to control the parameters. Thus, a scaled test rig had to be made in order to investigate the generating mechanism of squeal noise. The unique feature of our test rig, HSTR (the Hongik Squeal Testing Rig), is that the degrees of freedom of its wheelset are similar to those of the real railway. The attack angle and running speed of the rail roller were controlled in real time for simulating the transient characteristic of the driving curve. The environment conditions, such as the given axle load, running speed, and wheel's yaw angle have been identified for generating squeal noise and the squeal noise itself has been measured. The relation between wheel creepage and creep force in a lateral direction, and the characteristic of the squeal noise have been investigated, where the results have been verified by finite element method. purchase the full-text of this paper (price £22) 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 £85 +P&P)
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