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Your search keyword '"Wheel–rail interactions"' showing total 4 results
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4 results on '"Wheel–rail interactions"'

1. A trailer car dynamics model considering brake rigging of a high-speed train and its application.

Author

Zhiwei Wang, Linchuan Yang, Jiliang Mo, Song Zhu, and Wenwei Jin

Subjects
BRAKE systems, TORSIONAL vibration, HIGH speed trains, SPEED limits, MOTOR vehicle springs & suspension, TRAILERS
Abstract

Brake systems are essential for the speed regulation or braking of a high-speed train. The vehicle dynamic performance under braking condition is complex and directly affects the reliability and running safety. To reveal the vehicle dynamic behaviour in braking process, a comprehensive trailer car dynamics model (TCDM) considering brake systems is established in this paper. The dynamic interactions between the brake system and the other connected components are achieved using the brake disc-pad frictions, brake suspension systems, and wheel-rail interactions. The force and motion transmission from the brake system to the wheel-rail interface is performed by the proposed TCDM excited by track irregularity. In addition, the validity of TCDM is verified by experimental test results. On this basis, the dynamic behaviour of the coupled system is simulated and discussed. The findings indicate that the braking force significantly affects vehicle dynamic behaviour including the wheel-rail forces, suspension forces, wheelset torsional vibration, etc. The dynamic interactions within the brake system are also significantly affected by the vehicle vibration due to track irregularity. Besides, the developed TCDM can be further employed to the dynamic assessment of such a coupled mechanical system under different braking conditions. [ABSTRACT FROM AUTHOR]

Published
2023
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3. Signature analysis on wheel-rail interaction for rail defect detection

Author

Hwa Yaw Tam, Ken Hok Man Ho, K.K. Wong, Tin Kin Ho, S.L. Ho, K. Y. Lee, Shun-yee Liu, and Y. T. Ho

Subjects
Engineering, Signal processing, business.industry, Condition monitoring, 090507 Transport Engineering, Remote sensing, Track (rail transport), Signature (logic), Vehicle dynamics, Fiber Bragg grating, 090609 Signal Processing, Electronic engineering, Railway engineering, business, Focus (optics), wheel-rail interactions, 090606 Photonics and Electro-Optical Engineering (excl. Communications), rail defect detection
Abstract

Fibre Bragg Grating (FBG) sensors have been installed along an existing line for the purposes of train detection and weight measurement. The results show fair accuracy and high resolution on the vertical force acted on track when the train wheels are rolling upon. While the sensors are already in place and data is available, further applications beyond train detection are explored. This study presents the analysis on the unique signatures from the data collected to characterise wheel-rail interaction for rail defect detection. Focus of this first stage of work is placed on the repeatability of signals from the same wheel-rail interactions while the rail is in healthy state. Discussions on the preliminary results and hence the feasibility of this condition monitoring application, as well as technical issues to be addressed in practice, are given.

Published
2008

4. Signature analysis on wheel-rail interaction for rail defect detection

Author

Ho, Mark, Liu, S.Y., Ho, Y.T., Ho, K.H., Wong, K.K., Lee, K.Y., Tam, H.Y., Ho, S.L., Ho, Mark, Liu, S.Y., Ho, Y.T., Ho, K.H., Wong, K.K., Lee, K.Y., Tam, H.Y., and Ho, S.L.

Abstract

Fibre Bragg Grating (FBG) sensors have been installed along an existing line for the purposes of train detection and weight measurement. The results show fair accuracy and high resolution on the vertical force acted on track when the train wheels are rolling upon. While the sensors are already in place and data is available, further applications beyond train detection are explored. This study presents the analysis on the unique signatures from the data collected to characterise wheel-rail interaction for rail defect detection. Focus of this first stage of work is placed on the repeatability of signals from the same wheel-rail interactions while the rail is in healthy state. Discussions on the preliminary results and hence the feasibility of this condition monitoring application, as well as technical issues to be addressed in practice, are given.

Published
2008

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