Effect Analysis On Heavy Tuned Mass Damper
System Used In Urban Transportation
Author(s)
L. Li, C. Geng & Q. Yu
Abstract
A tuned mass damper (TMD) is an effective structure. When the mass of TMD is
bigger, the effect to vibration reduction is better. In order to study the heavy
tuned mass damper (HTMD) vibration reduction effect, three methods have been
covered in this paper. The first is to analyze its natural frequencies and mode
shapes. By comparing HTMD with common track, the performance of moderate
and high frequency vibration attenuation has been verified. The second is the
finite element study of wheel load drop on the track structure to simulate the real
wheel impact. The stability and performance of damping property under impact
load has been confirmed. Meanwhile, through dynamic load, parameter
responses of tracks have been obtained. Comparing the track which uses HTMD
with the common one, it can be concluded that the HTMD system fixed on the
rail is effective.
Keywords: heavy tuned mass damper, natural frequency, wheel load drop,
dynamic response.
1 Introduction
Rail transit in China has been developing very rapidly in the past dozens of
years. Because most urban rail transits pass through downtown, the vibration and
noise has a great impact on the environment. The vibration and noise directly
affects people’s living conditions and health, especially to those who live and
work along the lines. A lot of research work has been undertaken on rail transit
Keywords
heavy tuned mass damper, natural frequency, wheel load drop,
dynamic response.
Related Book
Other papers in this volume
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