噪声与振动控制

›› 2011, Vol. 31 ›› Issue (4): 93-96.DOI: 10.3969/j.issn.1006-1355-2011.04.022

• 3.运载工具振动与噪声 • 上一篇    下一篇

某SRV车内噪声的分析与控制

龚 兵,陈 剑

  

  1. （ 合肥工业大学 噪声振动工程研究所， 合肥 230009 ）
  • 收稿日期:2010-11-26 修回日期:2010-12-29 出版日期:2011-08-18 发布日期:2011-08-18
  • 通讯作者: 龚兵

Interior Noise Analysis and Control of an SRV

GONG Bing, CHEN Jian   

  1. ( Institute of Sound and Vibration Research, Hefei University of Technology, Hefei 230009 )
  • Received:2010-11-26 Revised:2010-12-29 Online:2011-08-18 Published:2011-08-18

摘要： 针对某SRV车，建立可靠的白车身有限元模型、声腔边界元模型和有限元边界元耦合模型；在计算出场点声压频率响应的基础上，对峰值频率处进行面板贡献量分析，找出产生峰值声压的主要来源；基于模态修改法优化主要振动区域腹部节点的速度来降低车内噪声。

关键词: 声学, 间接边界元法, 面板贡献量, 声传递向量, 模态修改法

Abstract: A structural FE model for body-in-white of an SRV, an acoustic cavity BE model and an FE-BE coupled model are built. Based on the analysis of the acoustic pressure response at the field points, the peak values of acoustic pressure are found by panel contribution analysis. Based on modes modification method, the acoustic pressure is found and reduced by optimizing the velocity of the nodal point in main vibrant area.

Key words: acoustics, indirect BEM, panel contribution, ATV, modal modify analysis method

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