Compound track model with the rail absorber is developed for investigation of the performance of the absorber on reduction of the rail component of rolling noise. The noise radiated from the track with the absorber due to the roughness is predicted. Different types and installation positions of the rail absorber are studied for their effectiveness in terms of the vibration receptance, decay rate, overall response and sound power radiated. The predictions show that the rail radiated noise can be reduced by about 6 dB(A) by use of the rail absorber. The most effective installation position for the discrete absorber is at mid-spans of sleeper bay. As the rail vibration amplitude is not large at sleepers, they are not appropriate places for the discrete absorber to dissipate vibration energy.
Theoretical Study on Noise Reduction of Rail Component by Use of Rail Absorber
Noise and Vibration Mitigation for Rail Transportation Systems ; Chapter : 54 ; 384-391
2008-01-01
8 pages
Article/Chapter (Book)
Electronic Resource
English
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