振幅放大型钢轨吸振器对弹性波传播的控制研究

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Abstract The use of rail vibration absorber is an effective means to control the noise of wheel and rail, and its structure can be optimized and designed to achieve vibration reduction and noise reduction more effectively. a new type of rail vibration absorber was proposed based on the amplitude magnification mechanism, and the rail model attached with the periodically arranged amplitude magnification vibration absorber was established, and the energy method was used to obtain the band gap of the model structure, The calculated band structure was verified using COMSOL finite element software, and the damping effect of the amplitude magnification vibration absorber was studied and evaluated in combination with the calculation results of the displacement admittance and vibration acceleration level. In addition, the mechanism of amplitude magnification and the influence of magnification times on vibration damping performance were further analyzed. The results show that from the perspective of controlling the propagation of elastic waves in the rail structure, the amplitude magnification rail vibration absorber proposed has more superior vibration reduction performance compared with conventional vibration absorber.

Key words： rail vibration absorber amplitude magnification periodic structure band gap energy method

Received: 06 June 2022 Published: 28 August 2023

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	Articles by authors
	FENG Qingsong1
	ZHANG Hanwen1
	GUO Wenjie1
	LIANG Yuxiong1
	LU Jianfei2

Cite this article:

FENG Qingsong1,ZHANG Hanwen1,GUO Wenjie1, et al. A study on the control of elastic wave propagation by amplitude magnification rail vibration absorbers[J]. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(16): 1-9.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2023/V42/I16/1

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