噪声与振动控制

›› 2011, Vol. 31 ›› Issue (3): 51-54.DOI: 10.3969/j.issn.1006-1355-2011.03.012

• 3.运载工具振动与噪声 • 上一篇    下一篇

6830CR1型客车怠速振动问题分析及解决方法

韩天,金玲[Author]) AND 1[Journal]) AND year[Order])" target="_blank">金玲,尹忠俊,张雷,金玲[Author]) AND 1[Journal]) AND year[Order])" target="_blank">金玲   

  1. （ 北京科技大学 机械工程学院， 北京 100083 ）
  • 收稿日期:2010-09-01 修回日期:2010-10-15 出版日期:2011-06-18 发布日期:2011-06-18
  • 通讯作者: 韩天

Analysis and Solutions of Idle Vibration Problem for 6830 CR1 Bus

<FONT face=Verdana><a href="https://nvc.sjtu.edu.cn/EN/article/advancedSearchResult.do?searchSQL=(((HAN Tian[Author]) AND 1[Journal]) AND year[Order])" target="_blank">HAN Tian</a>,<a href="https://nvc.sjtu.edu.cn/EN/article/advancedSearchResult.do?searchSQL=(((JIN Ling[Author]) AND 1[Journal]) AND year[Order])" target="_blank">JIN Ling</a>,<a href="https://nvc.sjtu.edu.cn/EN/article/advancedSearchResult.do?searchSQL=(((YIN Zhong-jun[Author]) AND 1[Journal]) AND year[Order])" target="_blank">YIN Zhong-jun</a>,<a href="https://nvc.sjtu.edu.cn/EN/article/advancedSearchResult.do?searchSQL=(((ZHANG Lei[Author]) AND 1[Journal]) AND year[Order])" target="_blank">ZHANG Lei</a></FONT>   

  1. ( The School of Mechanical Engineering, University of Science and Technology Beijing，Beijing 100083， China )
  • Received:2010-09-01 Revised:2010-10-15 Online:2011-06-18 Published:2011-06-18
  • Contact: HAN Tian

摘要： 对怠速状态下振动过大的客车进行现场振动测试及锤击模态实验，得到整车的振动频率成分及固有特性。通过振动分析得出影响该客车振动的主要因素是发动机转动传到底盘大梁的振动，与怠速车速密切相关。并对其底盘进行结构仿真分析，经过与模态测试对比，最终确定客车振动是怠速的工作频率与车辆底盘固有频率的耦合问题，通过改变底盘局部结构合理消除共振耦合现象。

关键词: 振动与波, 怠速, 振动测试, 锤击模态, 耦合共振

Abstract: Aiming at the problem of large vibration in the idle state, the vibration testing and hammering modal experiment were done for 6830CR1 bus. The natural frequency and intrinsic characteristics of the entire bus were obtained. It is found that the main factor influencing the bus vibration is the vibration of chassis beam transmitted from the engine, and this factor is closely related with the idle speed. Through the structural simulation analysis of the chassis and comparison of the result with that of the modal testing, it is determined that the bus vibration is a coupling problem between the idle operating frequency and the natural frequency of the chassis. Finally, the phenomenon of coupling resonance is eliminated by improving the local structure of the chassis.

Key words: vibration and wave, idle, vibration testing, hammering modal, coupling resonance

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