1. College of Urban Railway Transportation, Shanghai University of Engineering Science, Shanghai 201620, China;
2. School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai 200235, China
To reduce the vertical vibration of urban rail vehicle body, the vehicle-track model with dynamic vibration absorber is established in the study, and the vertical vibration characteristic of the coupling model can be obtained. The study clarifies the effects of the track system on vertical vibration characteristic of the vehicle body, and discusses the influence of capacity and the speed on damping performance of dynamic vibration absorbers, then focuses on the design method of dynamic vibration absorber considering the track system. Considering the speed change and the operation probability of speed range to evaluate damping performance of dynamic vibration absorber, a novel evaluation index which called DVA vibration reduction index can be presented. The results show that due to the track system, the peak frequency of car body vibration is shifted, and the vertical vibration characteristic is changed and the vertical vibration becomes more intensively. For the coupling of the vehicle and the track, designers have to consider the matching between the weight and design frequency of the dynamic vibration absorber, and recognize that the design frequency threshold determines whether dynamic vibration absorber has damping effect and the optimum design frequency determines whether the dynamic vibration absorber has better damping effect. This study has an important reference value to evaluate and analysis the vibration characteristic of urban rail vehicle including dynamic vibration absorber.
文永蓬1，李 琼1，尚慧琳2，徐小峻1. 考虑车轨耦合作用的车体动力吸振器减振性能研究[J]. 振动与冲击, 2016, 35(21): 53-62.
WEN Yong-peng 1，LI Qiong 1，SHANG Hui-lin2，XU Xiao-jun 1. Study on the Performance of Dynamic Vibration Absorber for the Car Body Vibration Considering the Effects of Vehicle-track Coupling. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(21): 53-62.
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