Numerical Analysis on Dynamic Behavior of Damping Fasteners in Rail Transit Viaduct System under Wheel Load Drop

Abstract:

In order to analyze the damping effect of high-elastic damping fastener on rail transit viaduct, Ls Dyna software was use to analyze rail and viaduct vertical vibration under different fastener damping constant. Fasteners with no damping constant and different damping constant are built in finite element model with rail transit viaduct, and the acceleration simulation results of them are compared to find damping effect on rail transit viaduct vibration transmission. The results indicate that the damping characteristic can attenuate vibration produced by wheel rail impact, however as the fastener damping constant are only parts of the whole damping system of the rail transit viaduct, the damping constant is not as better as its increment. The paper attempts to provide advice for employment of damping fastener in excessive vibration region of urban mass transit.

• Periodical: Applied Mechanics and Materials (Volumes 226-228)
• Pages: 1527-1530
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.226-228.1527
• Online since: November 2012
• Authors: Xuan Dong Zheng, Chuan Zhi Geng, Teng Fei Qu
• Keywords: Damping Constant, Fastener, LS-DYNA, Rail Transit Viaduct, Vibration Attenuation

References

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[3] R.Clough: Structural Dynamics (Higher Education Press, China 2010)