DocumentCode :
3204412
Title :
A New Technique for Hanger Position Optimization of Vehicle Exhaust System
Author :
Yansong, Wang ; Weiwei, Wu ; Jianghua, Liu
Author_Institution :
Shanghai Univ. of Eng. Sci., Shanghai, China
Volume :
1
fYear :
2010
fDate :
11-12 May 2010
Firstpage :
246
Lastpage :
249
Abstract :
A simulation technique using a finite element method (FEM) model for predicting, reducing and optimizing vibrations of the exhaust system was developed in this paper. Based on a sample vehicle, the HyperMesh and MSC. Nastran software are adopted for meshing and calculation in the FEM modeling and vibration modal analysis of the exhaust system. In view of the reduction of the exhaust vibration effect on the whole vehicle, according to the simulated results, a method called averaged driving DOF displacement (ADDOFD), is used to determine and optimize the exhaust hanger positions. Furthermore, The determined hanger positions are proved by the calculated node acceleration spectra from both the frequency-response analysis (FRA) and the random-response analysis (RRA) of the exhaust system. The results suggest that, in the pre-development stages of a vehicle design, the HyperMesh, MSC. Nastran software and the ADDOFD method are effective and feasible for simulation and hanger position assignment of the vehicle exhaust system. The work done in this paper can be extended to other types of vehicle, thus, is instructive for saving both the time and the cost in the development of new vehicles.
Keywords :
exhaust systems; finite element analysis; mechanical engineering computing; vehicles; HyperMesh software; MSC.Nastran software; averaged driving DOF displacement; finite element method; frequency-response analysis; hanger position optimization; random-response analysis; vehicle exhaust system; vibrations; Acceleration; Costs; Exhaust systems; Finite element methods; Frequency; Modal analysis; Optimization methods; Predictive models; US Department of Transportation; Vehicle driving; ADDOFD Method; Exhaust Hanger Position; Finite Element Method; Modal Analysis; Random Response Analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Intelligent Computation Technology and Automation (ICICTA), 2010 International Conference on
Conference_Location :
Changsha
Print_ISBN :
978-1-4244-7279-6
Electronic_ISBN :
978-1-4244-7280-2
Type :
conf
DOI :
10.1109/ICICTA.2010.291
Filename :
5523301
Link To Document :
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