噪声与振动控制2017，Vol.37Issue(1)：117-122,6.DOI:10.3969/j.issn.1006-1335.2017.01.026
新型组合式道床系统低频振动控制研究
Research of New Track-slab Hybrid System for Low Frequency Vibration Control
摘要
Abstract
The phenomenon of vibration enlargement in low frequency domain of the track-slab hybrid system is studied.Based on passive dynamic vibration absorber theory,the tuned slab dampers are designed.According to the vehicletrack coupling dynamic theory,the finite element model is established.Track frequency response functions of a normal slab track and the track with optimized tuned slab dampers are analyzed and compared each other.The results show that the slab vibration acceleration level of the normal track is lower than that of the hybrid track due to the rigid connection between the track structure and the ground foundation of the normal track.However,since there is no vibration insulation between the track and the foundation,the vibration level of the foundation of the normal track is higher than that of the hybrid track.In the frequency range of 20 Hz-40 Hz,installing the tuned slab dampers in the slab-track hybrid system can effectively reduce the vibration acceleration level of the slab.With the increasing of the mass ratio,the vibration reduction effect also increases.When the mass ratio reaches 0.3,the insertion loss is up to 15 dB.关键词
振动与波/组合式道床/阻尼减振器/有限元/低频减振Key words
vibration and wave/track-slab hybrid system/tuned slab damper/finite element/low frequency attenuation分类
通用工业技术引用本文复制引用
李元康,王安斌,王志强,张力文..新型组合式道床系统低频振动控制研究[J].噪声与振动控制,2017,37(1):117-122,6.基金项目
洛阳市重大科技专项资助项目(1401060A) （1401060A）
