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Volume 28 Issue 6
Dec.  2015
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Journal of Southwest Jiaotong University  > 2015  >  28(6): 1082-1087.
YANG Jizhong, ZHANG Lei, CAI Chengbiao, YAN Hua. Multi-mode Vibration Attenuation Track in Low-Frequency Domain[J]. Journal of Southwest Jiaotong University, 2015, 28(6): 1082-1087. doi: 10.3969/j.issn.0258-2724.2015.06.015
Citation: YANG Jizhong, ZHANG Lei, CAI Chengbiao, YAN Hua. Multi-mode Vibration Attenuation Track in Low-Frequency Domain[J]. Journal of Southwest Jiaotong University, 2015, 28(6): 1082-1087. doi: 10.3969/j.issn.0258-2724.2015.06.015
shu

Multi-mode Vibration Attenuation Track in Low-Frequency Domain

doi: 10.3969/j.issn.0258-2724.2015.06.015
  • Received Date: 20 Jan 2015
  • Publish Date: 25 Dec 2015
    Abstract
  • For the phenomenon of low-frequency environmental vibration caused by the urban rail transit, based on the extended fixed-point theory, the passive vibration controlling technology, the finite element method and the vehicle-track coupling dynamics, a design method is developed to analyze the multi-mode vibration attenuation characteristics of the passive dynamic damping floating slab track (PDD_FST) in low-frequency domain, and a coupled vehicle-PDD_FST dynamics model is established. The results show that PDD_FST could effectively suppress the resonant vibration in the range of 10-20 Hz. The greater the mass ration of the attached dynamic vibration absorber (DVA) to the PDD_FST is, the greater the insertion loss of the FST acceleration is. If the mass ratio of the DVAs controlling the 1st and 2nd order mode vibration is 0.2, the max insertion loss reaches up to 15 dB. PDD_FST has less influence on the wheelset's vibration and no influence on the car body and bogie's vibration.

     

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