A NOISE SUPPRESSION METHOD BASED ON COMPLEX EIGENVALUE ANALYSIS OF DISC BRAKE VIBRATION (MT)

ZHAN Bin; CHEN RongJie; TANG JunQi; LIU Lang; WU YiDong

doi:10.16579/j.issn.1001.9669.2023.03.008

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A NOISE SUPPRESSION METHOD BASED ON COMPLEX EIGENVALUE ANALYSIS OF DISC BRAKE VIBRATION (MT)

更新时间：2023-08-01

- A NOISE SUPPRESSION METHOD BASED ON COMPLEX EIGENVALUE ANALYSIS OF DISC BRAKE VIBRATION (MT)
- Journal of Mechanical Strength Issue 3, Pages: 562-568(2023)
- 作者机构：
  
  1. 广州汽车集团股份有限公司汽车工程研究院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2023.03.008
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ZHAN Bin, CHEN RongJie, TANG JunQi, et al. A NOISE SUPPRESSION METHOD BASED ON COMPLEX EIGENVALUE ANALYSIS OF DISC BRAKE VIBRATION (MT). [J]. Journal of Mechanical Strength (3):562-568(2023)
DOI：

ZHAN Bin, CHEN RongJie, TANG JunQi, et al. A NOISE SUPPRESSION METHOD BASED ON COMPLEX EIGENVALUE ANALYSIS OF DISC BRAKE VIBRATION (MT). [J]. Journal of Mechanical Strength (3):562-568(2023) DOI： 10.16579/j.issn.1001.9669.2023.03.008.

摘要

以某车型盘式制动器出现的3 000 Hz制动噪声问题为研究对象，通过在台架上复现该频率噪声，利用激光多普勒测振技术获取该噪声频率下的工作变形模式(Operational Deflection Shape, ODS)。建立制动器的有限元模型，通过试验模态对有限元模型各部件材料参数进行标定，应用复特征值分析技术，获取系统不稳定模态的频率和振型。结合激光测振得到的振型结果通过相关性分析确认当前复特征值分析模型对该频率噪声的有效性。然后，针对此不稳定模态进行子结构贡献量及子结构模态贡献量分析并提出相应的优化方案，并对优化方案进行了台架试验且验证此方法有效。

Abstract

Focusing on investigating the brake squeal problem of a disc brake at 3 000 Hz. To this end, the noise of this frequency is reproduced on the bench, the laser Doppler vibration measurement technology is used to obtain the operational deflection shape（ODS） at this frequency. Finite element analysis（FEA） model is established and modified according to the experimental modal. The complex eigenvalue analysis is adopted to retrieve the complex eigenvalues and mode shapes.The correlation analysis is used to confirm that the complex eigenvalue results are valid for the actual noise ODS results.Afterwards, analysis of the components contribution and the components modal contribution of this unstable mode are used to provide corresponding structural optimization plan, and a bench test has been carried out to verify the effectiveness of this method.

关键词

盘式制动器制动噪声激光测振复特征值分析相关性分析

Keywords

Disc brakeBrake noiseLaser vibrometerComplex eigenvalue analysisCorrelation analysis

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