铁道标准设计2018，Vol.62Issue(7)：5-10,6.DOI:10.13238/j.issn.1004-2954.201708120005
动力吸振器刚度和阻尼偏差对浮置板轨道低频振动控制的影响
Influences of Stiffness and Damping Deviations of Dynamic Vibration Absorber on Low-frequency Vibration Control of Floating Slab Track
摘要
Abstract
Focusing on the problems in the application of dynamic vibration absorber (DVA) on the floating slab track(FST),this paper studies the vibration control of a FST in low frequency zone(＜32 Hz)based on the theories of extended fixed-point and vehicle-track coupling dynamics in the case that the stiffness and damping coefficients of DVA deviate from the optimal values.For a steel spring FST,its finite element model is established when DVA is applied,which is then incorporated into the vehicle-track coupled dynamics model to perform simulation analysis.The calculation results show that when the damping coefficient of the DVA is not at its optimal value,there are two obvious peaks generated by the vibration displacement responses of the FST near its natural frequency,and the comprehensive vibration control effect of the FST in low frequency zone is reduced by 2.1 dB under the condition that the damping deviation arrives-75％.When the stiffness deviation is less than 125％,a obvious peak generated by the vibration displacement response appears at the frequency less than the natural frequency,and the comprehensive vibration control effect on the FST in low frequency zone is increased by 0.5 dB with 75％stiffness deviation.关键词
浮置板轨道/动力吸振器/刚度和阻尼偏差/低频/振动控制Key words
Floating slab track/Dynamic vibration absorber/Deviations of stiffness and damping/Low frequency/Vibration control分类
交通工程引用本文复制引用
王建伟..动力吸振器刚度和阻尼偏差对浮置板轨道低频振动控制的影响[J].铁道标准设计,2018,62(7):5-10,6.基金项目
四川省科技计划项目(2017GZ0088) （2017GZ0088）
