Complex Dispersion Analysis of Vertical Bending Vibration Wave of Periodic Ballasted Track Structure
CSTR:
Author:
Affiliation:

Clc Number:

U213

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    The periodic characteristics of the track structure have filtering characteristics for the propagation of vibration waves within the structure, and dispersion analysis is important for understanding the vibration transmission characteristics of the track structure. Based on the virtual spring model and the energy functional variation principle, we propose a new method to calculate the complex dispersion of the periodic structure of the rail based on the virtual spring model and the energy functional variation principle, which can consider the damping factor and the material frequency variation effect. The accuracy of the method is verified by comparing with the existing literature, and the method is used to analyze the influence law of fastener stiffness frequency variation effect, fastener damping and ballast damping on the vibration wave complex dispersion characteristics of track structure. The results show that the stiffness frequency variation effect and the fastener and ballast damping have a large influence on the attenuation domain and the attenuation speed of the vibration, which must be considered in the vibration transmission analysis of the track structure.

    Reference
    Related
    Cited by
Get Citation

徐伟.周期性有砟轨道结构垂向弯曲振动波复频散分析[J].华东交通大学学报英文版,2023,40(4):40-47.
Xu Wei. Complex Dispersion Analysis of Vertical Bending Vibration Wave of Periodic Ballasted Track Structure[J]. JOURNAL OF EAST CHINA JIAOTONG UNIVERSTTY,2023,40(4):40-47

Copy
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:February 13,2023
  • Revised:
  • Adopted:
  • Online: August 18,2023
  • Published:
Article QR Code