Determination of dynamic rail properties by means of modal testing

Shyh-Chour Huang; Ren-sheng Lin; Jiun-Rong Liao; Yung-Chuan Chen

doi:10.1117/12.468765

29 May 2002 Determination of dynamic rail properties by means of modal testing

Shyh-Chour Huang, Ren-sheng Lin, Jiun-Rong Liao, Yung-Chuan Chen

Proceedings Volume 4537, Third International Conference on Experimental Mechanics; (2002) https://doi.org/10.1117/12.468765
Event: Third International Conference on Experimental Mechanics, 2002, Beijing, China

Abstract

The interference to the public due to the operations of transit system is one of the major issues to the people in the surrounding areas. The interference is due to the vibrations caused by the rolling stock itself and the interaction between train and the rail. The interaction is propagated by the soil. The soil accepts the energy and produces compressive waves. The waves transmit the energy to the surrounding buildings. The human percepts the vibrations and feels uncomfortable. In order to suppress the vibrations and reduce the noise from the operations of the trains, a suitable mathematical model must set up to begin the analysis of the dynamic characteristics of the rail and the transmission of the vibration. This study is to apply modal testing to measure the dynamic characteristics of the rail to establish a feasible mathematical model. The dynamical characteristics of the rail are obtained by the analysis of the result of a hammer excitation to the rail. The result provide the parameters for the mathematical model. The mathematical model will be more practical and feasible. The final mathematical model will be the foundation to the studies for the interaction of the wheelset and rail and for the studies for the vibrations transmission to the buildings.

Citation Download Citation

Shyh-Chour Huang, Ren-sheng Lin, Jiun-Rong Liao, and Yung-Chuan Chen "Determination of dynamic rail properties by means of modal testing", Proc. SPIE 4537, Third International Conference on Experimental Mechanics, (29 May 2002); https://doi.org/10.1117/12.468765

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