Journals
  Publication Years
  Keywords
Search within results Open Search
Please wait a minute...
For Selected: Toggle Thumbnails
Simulation of Lateral Vibration of Urban Rail Vehicle Body
CHANG Qing-bin;ZUO Yan-yan;YANG Jian
   2012, 32 (1): 55-58.   DOI: 10.3969/j.issn.1006-1355-2012.01.013
Abstract （1634）            Save
The influence of track irregularity on vehicle body’s lateral vibration is studied, and the performance of vehicle body’s vibration is evaluated. At first, a simplified urban vehicle’s model is established. Then the track irregularity is described and the track power spectrum in space domain is transferred into the spectrum in time-frequency domain. The 3D model of the vehicle’s body is established with PROE software, and then the wheel-rail model and the train’s simulation model are established with the use of the dynamic simulation software SIMPACK. Finally, with the height irregularity as excitation function, the lateral vibration response of the vehicle’s body is computed. Referring to the domestic standard of lateral stability, the lateral performance of vehicle’s body is evaluated.
Related Articles | Metrics
《Research on UltraLowFrequency Nonlinear Vibration Isolation System》
LU Chun-hong;BAI Hong-bai;YANG Jian-chun;LI Zhi-zun
   2010, 30 (4): 10-12.   DOI: 10.3969/j.issn.1006-1355.2010.04.003
Abstract （2691）      PDF（pc） （967KB）（1893）       Save
Based on the analysis of vibration isolation mechanism of parallel combination of positive and negative stiffness, a new type of ultralowfrequency vertical vibration isolation system is developed in this paper. In this system, the parallel connection of springs with, respectively, positive stiffness and negative stiffness is applied so that it possesses high supporting stiffness as well as ultralow kinematic stiffness. And the stiffness of the system is also nonlinear. This method has solved the problem of ultralow frequency vibration isolation in the traditional passive vibration isolator system. Through the analysis of mechanical characteristic of this system, expression of the stiffness of the isolator and zero stiffness condition of the system at the equilibrium position are deduced. This method offers a theoretical guidance for the design of new type of nonlinear ultralowfrequency vibration isolators.
Related Articles | Metrics