Hanger Point Location Optimization to Improve Automobile Exhaust System

Abstract

Abstract: In order to get a better location for the hanger of a exhaust system, this paper was focused on numerical analysis and theoretical research on the simplified model. Firstly, the hanger position was analyzed theoretically and a finite element model was established based on a passenger car. Secondly, the hanger position was determined with the methods of average driver DOF and improved method. Finally, the conclusion was obtained through force response of the two methods'results. It takes less time to calculate and establish a model with improved method, which is proved to be more efficient. Moreover, the location determined by improved method is more accurate, which has a less force response, less shock and less structural noise.

Key words: exhaust system,, hanger position, force response, structural noise

摘要： 为了探究排气系统更优的挂钩位置，对简化模型进行数值分析及理论研究。首先，对挂钩位置的确定进行理论分析并以某乘用车排气系统为研究对象建立有限元模型；其次，分别用平均驱动自由度方法和改进方法确定挂钩位置；最后，将两种方法确定的挂钩位置分别进行动力响应分析并得出结论。改进方法的计算及建模过程耗时更少，工作效率更高；同时，确定的挂钩位置更准确，使得挂钩的力响应更小，传递到车身的振动和结构噪声更不明显。

关键词: 排气系统, 挂钩位置, 力响应, 结构噪声

CLC Number:

TH122
U463.1

Huang Zehao, Zheng Fengyun, Jiang Guangzhi, Yuan Guangliang. Hanger Point Location Optimization to Improve Automobile Exhaust System[J]. China Mechanical Engineering.

黄泽好, 郑风云, 姜广志, 袁光亮. 汽车排气系统悬挂点位置的优化改进[J]. 中国机械工程.

References

[1]庞剑，谌刚.汽车噪声与振动:理论与应用[M].北京：北京理工大学出版社,2006.

[2]张修路, 姚国凤, 韩春杨, 等.汽车排气系统的悬挂点对减振效果的仿真分析[J].系统仿真学报,2014,26(4): 796-801.

Zhang Xiulu,Yao Guofeng,Han Chunyang,et al.Car Exhaust System of Hanger Point Simulation Analysis of the Vibration Reduction Effect[J].Journal of System Simulation,2014,26(4):796-801.

[3]刘名,翁建生.排气系统振动分析和悬挂点位置优化[J]. 噪声与振动控制,2010,30(5):95-97.

Liu Ming, Weng Jiansheng. Exhaust System Vibration Analysis and the Hanger Point Position Optimization [J].Journal of Noise and Vibration Control,2010, 30(5):95-97.

[4]雷刚,胡鹏,刘圣坤.汽车排气系统模态分析及挂钩位置优化[J].内燃机工程,2014,35(2):102-106.

Lei Gang,Hu Peng,Liu Shengkun.Automotive Exhaust System Modal Analysis and Hanger Position Optimization[J].Journal of Internal Combustion Engine Engineering, 2014, 35(2):102-106.

[5]Pang J,Kurrle P,Qatu M,et al.Attribute Analysis and Criteria for Automotive Exhaust Systems[J].SAE Technical Paper, 2003-01-0221.

[6]Iyer G, Mohan S, Rao N, et al.Evaluation of Dynamic Characteristics of an Automotive Exhaust System Using Operational Modal Analysis (OMA) and Experimental Modal Analysis (EMA)[J].SAE Technical Paper, 2013-01-2903.

[7]刘志恩,田静,颜伏伍,等.汽车排气系统悬挂点布置研究[J].武汉理工大学学报(信息与管理工程版),2010,32(6): 950-953.

Liu Zhien, Tian Jing, Yan Fuwu, et al. Automotive Exhaust System Hanger Point Arrangement Study[J].Journal of Wuhan University of Science and Technology（Information and Management Engineering）2010,32(6):950-953.

[8]Pang J, Qatu M.Exhaust System Robustness Analysis due to Flex Decoupler Stiffness Variation[J].SAE Technical Paper, 2003-01-1649.

[9]黄泽好,郑风云,姜广志,等.基于波纹管简化模型的排气系统模态分析[J].工程设计学报,2015，22(1):54-57.

Huang Zehao,Zheng Fengyun,Jiang Guangzhi,et al. Simplified Model Based on the Corrugated Pipe of Exhaust System Modal Analysis[J].Journal of Engineering Design,2015，22(1):54-57.

[10]Lee C M,Park S T,Kim S H.Development of a Simple Numerical Method of the Exhaust System to Find Optimized Design Values[J].SAE Technical Paper, 1999-01-1666.

[11]Goktan A G, Yetkin A.A Mathematical Model for Exhaust System Vibrations Caused by Road Surface Inputs[J].SAE Technical Paper, 2001-01-1006.