[1]李晨阳,刘鹏,陈宏,等.基于驾驶室舱内声学特性的动力吸振器设计研究[J].郑州大学学报(工学版),2021,42(04):47-52.[doi:10.13705/j.issn.1671-6833.2021.04.008]
　Li Chenyang,Liu Peng,Chen Hong,et al.Design and Research of Dynamic Vibration Absorber Based on Acoustic Characteristics of Interior Sound Field in a Cab[J].Journal of Zhengzhou University (Engineering Science),2021,42(04):47-52.[doi:10.13705/j.issn.1671-6833.2021.04.008]

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基于驾驶室舱内声学特性的动力吸振器设计研究()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

42卷

期数:

2021年04期

页码:

47-52

栏目:

出版日期:

2021-07-30

文章信息/Info

Title:

Design and Research of Dynamic Vibration Absorber Based on Acoustic Characteristics of Interior Sound Field in a Cab

作者:

李晨阳; 刘鹏; 陈宏; 王坤

郑州大学机械与动力工程学院;

Author(s):

Li Chenyang; Liu Peng; Chen Hong; Wang Kun;

School of Mechanical and Power Engineering, Zhengzhou University;

关键词:

车内声学特性; 动力吸振器; 有限元法; 面板声贡献量; 正交多项式法

Keywords:

acoustic characteristics; dynamic vibration absorber; finite element method; panel acoustic contribution; orthogonal polynomials method

DOI:

10.13705/j.issn.1671-6833.2021.04.008

文献标志码:

A

摘要:

本文提出了基于车内声学特性的动力吸振器的设计方法。利用有限元法建立汽车车身结构和内部声腔声固耦合模型，得到驾驶员右耳处声压响应，分析该点面板声贡献量。将声贡献量最高的面板作为动力吸振器控制对象，利用多项式法识别该面板的等效质量。依据此等效质量设计动力吸振器。结果表明：与根据振型腹点确定动力吸振器控制对象，利用附加质量法识别受控面板等效质量所设计动力吸振器相比，根据本文所提出方法设计的动力吸振器可以进一步降低车内噪声。

Abstract:

To reduce the noise in a cabin and improve the comfort of drivers and passengers,study of reducing the interior noise of the cab was carried out by using dynamic vibration absorbers (DVA).A commercial vehicle cab was simplified.The structure-acoustic coupling model of the simplified cab and its acoustic cavity was established by the finite element method.At first,the sound pressure at the right ear of a driver was predicted,and the frequencies of the highest two pressure peaks were treated as the working frequencies of DVAs.Secondly,the structural panel acoustic pressure contribution at the field point was calculated by the acoustic transfer vector,and the panel with the highest acoustic contribution was treated as the object of the DVA.After then,the equivalent mass of the panel as the object was identified by the orthogonal polynomial method.Finally,the DVA was designed based on the equivalent mass.Compared with using the anti-vibration point as the controlled object of the DVA,using the panel with the highest acoustic contribution as the object of the DVA could reduced the peak sound pressure by 1.46 dB compared with the previous method.Compared with using the mass induction method to determine the equivalent mass of the controlled panel,using the orthogonal polynomial method to determine the equivalent mass could increase the noise reduction rate by 18.9%.According to the acoustic contribution to determine the controlled panel,and the equivalent mass computed by the orthogonal polynomials,this DVA design method could more effectively reduce the noise in the cab.

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