MDVA parametric optimization in box girder based on multi-mode control theory and its effects on low frequency vibration

被引：0

作者：

Zhou L. ^{[1
]}

Zhang T. ^{[1
]}

Luo Y. ^{[1
]}

机构：

[1] Institute of Rail Transit, Tongji University, Shanghai

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2020年 / 39卷 / 23期

关键词：

Effects on low frequency vibration; Multi-mode control theory; Multiple dynamic vibration absorbers (MDVA); Parametric optimization;

D O I：

10.13465/j.cnki.jvs.2020.23.016

中图分类号：

学科分类号：

摘要：

As multiple dynamic vibration absorbers (MDVA) have features of good vibration reduction effect and mass dispersion, here, MDVA's parameters were reasonably optimized to reduce vibration of box girder's components within multi-frequency bands under vehicle loads. Firstly, based on the fixed-point theory of a single-DOF system and the multi-DOF multi-mode control theory, the MDVA parametric optimization method for multi-objective mode was deduced. Secondly, the vehicle-rail-bridge finite element model was established. According to vibration spectrum and modal characteristics of box girder obtained with simulation, MDVA parameters and installation location were reasonably set up. Finally, the differences (1-250 Hz) between vibrations of box girder with and without MDVA were compared. Results showed that MDVA have better vibration absorption effect on multi-band responses of box girder; dynamic response results of rail and wheel reveal MDVA have a certain suppressing effect on their low frequency vibration. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.

引用

页码：107 / 113

页数：6

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