考虑弹性振动的城市轨道车辆频变吸振器减振方法

文永蓬1,2,3,徐硕2,3,董昊亮2,3

振动与冲击 ›› 2023, Vol. 42 ›› Issue (17) : 35-42.

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PDF(2874 KB)
振动与冲击 ›› 2023, Vol. 42 ›› Issue (17) : 35-42.
论文

考虑弹性振动的城市轨道车辆频变吸振器减振方法

  • 文永蓬1,2,3,徐硕2,3,董昊亮2,3
作者信息 +

Vibration reduction method for urban rail vehicles considering elastic vibration using frequency varying vibration absorbers

  • WEN Yongpeng1,2,3, XU Shuo2,3, DONG Haoliang2,3
Author information +
文章历史 +

摘要

车体轻量化设计是城市轨道车辆技术发展趋势,然而轻量化后的车体可能会引起车辆的弹性振动加剧,导致运行过程中车辆平稳性和乘坐舒适性下降问题。为了有效抑制城市轨道车辆弹性车体的垂向振动、提高车辆乘坐舒适性,利用变刚度机构的系统频率呈非线性变化的特点,建立包含频变吸振器的城市轨道车辆弹性车体垂向动力学模型,提出利用频变吸振器抑制弹性车体垂向振动的减振方法,分析不同速度、不同位置安装频变吸振器的减振效果,指明频变吸振器的优点。通过对比频变吸振器与传统被动式吸振器的减振效果,对频变吸振器抑制车体振动进行评价。结果表明:频变吸振器在不同速度、不同位置均能有效抑制车辆刚性与弹性振动;频变吸振器的优点在于一定程度上能够拓宽被动式吸振器的减振频带,提升吸振器在复杂工况下的减振能力。论文的工作为利用频变吸振器在城市轨道车辆上的应用提供了参考依据。

Abstract

The lightweight design of the vehicle body is the development trend of urban railway vehicle technology. However, the lightweight carbody may aggravate the elastic vibration of the vehicle, and cause the decline of the vehicle’s stability and ride comfort during the operation. To effectively suppress the vertical vibration of the elastic carbody of urban railway vehicles and improve the ride comfort of vehicles, taking advantage of the nonlinear change of the system frequency of the variable stiffness mechanism, the vertical dynamic model of the elastic carbody of urban railway vehicles including frequency variable vibration absorber is established, the vibration reduction method of frequency variable vibration absorber to suppress the vertical vibration of elastic carbody is proposed, and the vibration reduction effect of installing frequency variable vibration absorber at different speeds and positions is analyzed, The advantages of frequency variable vibration absorber are obtained. The variable frequency vibration absorber is evaluated by comparing with the traditional variable frequency vibration absorber. The result shows that the frequency variable vibration absorber can effectively suppress the rigid and elastic vibration of vehicles at different speeds and positions. The advantage of a frequency variable vibration absorber is that it can broaden the damping frequency band of the passive vibration absorber to a certain extent, and improve the damping capacity of the vibration absorber under complex working conditions. The work of this paper provides a reference basis for the application of frequency variable vibration absorbers in urban railway vehicles.

关键词

垂向振动 / 弹性车体 / 频变 / 吸振器 / Sperling指标

Key words

Vertical vibration / Elastic carbody / Frequency variation / Vibration absorber / Sperling index

引用本文

导出引用
文永蓬1,2,3,徐硕2,3,董昊亮2,3. 考虑弹性振动的城市轨道车辆频变吸振器减振方法[J]. 振动与冲击, 2023, 42(17): 35-42
WEN Yongpeng1,2,3, XU Shuo2,3, DONG Haoliang2,3. Vibration reduction method for urban rail vehicles considering elastic vibration using frequency varying vibration absorbers[J]. Journal of Vibration and Shock, 2023, 42(17): 35-42

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