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CLC number: TH137.52

On-line Access: 2016-04-05

Received: 2014-11-25

Revision Accepted: 2015-10-19

Crosschecked: 2016-03-15

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Da-yun Yi


Liang Lu


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Journal of Zhejiang University SCIENCE A 2016 Vol.17 No.4 P.317-324


Squeal noise in hydraulic poppet valves

Author(s):  Da-yun Yi, Liang Lu, Jun Zou, Xin Fu

Affiliation(s):  The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   luliang829@zju.edu.cn

Key Words:  Poppet valve, Squeal noise, Helmholtz resonance, Fluid acoustics, Shear layer instability

Da-yun Yi, Liang Lu, Jun Zou, Xin Fu. Squeal noise in hydraulic poppet valves[J]. Journal of Zhejiang University Science A, 2016, 17(4): 317-324.

@article{title="Squeal noise in hydraulic poppet valves",
author="Da-yun Yi, Liang Lu, Jun Zou, Xin Fu",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Squeal noise in hydraulic poppet valves
%A Da-yun Yi
%A Liang Lu
%A Jun Zou
%A Xin Fu
%J Journal of Zhejiang University SCIENCE A
%V 17
%N 4
%P 317-324
%@ 1673-565X
%D 2016
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1400351

T1 - Squeal noise in hydraulic poppet valves
A1 - Da-yun Yi
A1 - Liang Lu
A1 - Jun Zou
A1 - Xin Fu
J0 - Journal of Zhejiang University Science A
VL - 17
IS - 4
SP - 317
EP - 324
%@ 1673-565X
Y1 - 2016
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1400351

The poppet valve is a fundamental component in fluid power systems. Under particular conditions, annoying “squeal” noises may be generated in hydraulic poppet valves. In the present study, the frequency spectrum of the squeal noise is obtained by analyzing the sampling data from the accelerometer mounted on the valve body. It is found that the flow velocity, pressure, and structural parameters have crucial effects on the properties of squeal noise, especially frequency. Larger valve chamber volume or lower backpressure leads to lower fundamental frequency of the squeal noise. An explanation for the squeal noise, as a result of helmholtz resonance, is suggested and proved by experimental results.

Noise analysis is not new in the scientific panorama, but the application in poppet valve is interesting. The results are interesting, and the explanations with regard to cavitation are plausible.


方法:1. 通过实验分析,观测到液压锥阀中啸叫噪声基频的漂移规律(图5~7、10和11);2. 提出液压锥阀啸叫噪声是流声耦合引起的亥姆霍兹共振假设;3. 通过建立锥阀阀腔声学共振频率模型,运用实验与理论相结合的方法分析不同工况下的啸叫噪声基频漂移规律,通过大量实验验证所提假设的正确性(图7、10和11)。
结论:1. 液压锥阀流声共振产生啸叫噪声,完成对特定频率噪声信号的选择性放大;2. 液压锥阀只有在因流体不稳定而产生的周期性压力扰动信号的频率与阀腔声学共振频率接近时才产生啸叫噪声;3. 运用液压锥阀流声共振产生啸叫噪声的结论,通过改变阀腔声学共振频率,使之与流道内因流体不稳定引起的压力扰动频率错开,能有效地抑制液压锥阀中啸叫噪声的产生。


Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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