Experimental and finite element analysis to identify the source of vibration of a coach

被引：4

作者：

Han, Tian ^{[1
]}

Huang, Chenxi ^{[1
]}

Tan, Andy C. C. ^{[2
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mech Engn, Beijing 100083, Peoples R China

[2] Queensland Univ Technol, Fac Sci & Engn, Brisbane, Qld 4001, Australia

来源：

ENGINEERING FAILURE ANALYSIS | 2014年 / 44卷

关键词：

Vibration testing; Modal analysis; Finite element analysis; Coupling resonance; ALGORITHM;

D O I：

10.1016/j.engfailanal.2014.04.024

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper presents an investigation on the cause of severe vibration problem of a coach with four-cylinder engine running at an idle state using vibration and impact hammer modal experiments to obtain the main vibration frequency components and the natural characteristics of the coach. The vibration results indicate that the main vibration component comes from the vibration transmitted from the engine to the chassis frame, which is closely related with the engine idle speed. Based on structural simulation analysis of the coach's chassis frame and comparison with modal testing, the coach severe vibration problem was due to coupling resonance between the engine idle frequency and the fourth natural frequency of the chassis frame. The solution to eliminate the vibration problem is provided by changing the local structure stiffness of the chassis frame. The contribution of this paper lies in providing a solution to solve similar problems. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：100 / 109

页数：10

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