A Coupled Structural-Acoustic Finite Element Model for Vehicle Interior Noise Analysis

1984 ◽  
Vol 106 (2) ◽  
pp. 314-318 ◽  
Author(s):  
S. H. Sung ◽  
D. J. Nefske
Keyword(s):  
Finite Element ◽  
Noise Analysis ◽  
Coupled Model ◽  
Element Model ◽  
Interior Noise ◽  
Vehicle Interior ◽  
Noise Sources ◽  
Acoustic Cavity ◽  
Vehicle Interior Noise ◽  
Vehicle Structure

An analytical method is developed for predicting vehicle interior noise and identifying noise sources. In this method, the finite element models representing the vehicle structure and its enclosed acoustic cavity are coupled mathematically. A modal formulation is employed to solve for the interior acoustic response, and an analysis is developed to identify the structural and acoustic modal participation as well as the boundary panel participation in producing the response. As an example application, a coupled model of an automotive vehicle is presented and experimentally evaluated. The modal and panel participations are identified from the results.

Vehicle Interior Noise Measurement and Analysis

2011 ◽  
Vol 467-469 ◽  
pp. 1072-1077
Author(s):  
Zhong Xin Li ◽  
Guang Ping Wang ◽  
Shen Xu Wang ◽  
Hong Jiang
Keyword(s):  
Internal Noise ◽  
Interior Noise ◽  
Vibration Acceleration ◽  
Vehicle Interior ◽  
Noise Sources ◽  
Noise And Vibration ◽  
Order Analysis ◽  
Vehicle Interior Noise ◽  
Measurement And Analysis ◽  
Acceleration Signals

A method of vehicle interior noise order analysis was presented to resolve the loud noise problem in a new indigenous vehicle. Sound and vibration properties of the vehicle were tested. The interior noise and vibration acceleration signals at different positions were obtained, and the major sources of noise and vibration were identified. Base on these results, modifications were proposed for different noise sources. The results provide a reference for the optimal design of vehicle motor and transmission system and the internal noise control.

A Structural-Acoustic Vehicle System Model for Noise and Vibration Analysis

2003 ◽  
Author(s):  
Shung H. Sung ◽  
Donald J. Nefske ◽  
Douglas A. Feldmaier ◽  
Spencer J. Doggett
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Exhaust System ◽  
Element Model ◽  
Interior Noise ◽  
System Model ◽  
Structural Vibration ◽  
Vehicle Interior ◽  
Front Suspension ◽  
Vehicle System

A structural-acoustic finite-element model of a sedan-type automotive vehicle is developed and experimentally evaluated for predicting vehicle interior noise and structural vibration. The vehicle system model is developed from finite-element models of the major structural subsystems, which include the trimmed body, front suspension, rear suspension, powertrain and exhaust system. An acoustic finite-element model of the passenger compartment cavity is coupled with the vehicle system model to predict the interior noise response. The predicted interior noise and structural vibration by the vehicle system model are compared with the measured responses for shaker excitation at the axle to 200 Hz. The comparisons demonstrate the accuracy of the structural-acoustic vehicle system model, and they indicate where modeling improvements are required.

Simulation and Optimization to Vehicle Interior Noise in Mid and High Frequency Using VAone

2012 ◽  
Vol 268-270 ◽  
pp. 851-855
Author(s):  
Xin Chen ◽  
Chang Feng Gao ◽  
Xiao Hua Geng ◽  
Chen Xie
Keyword(s):  
High Frequency ◽  
Energy Analysis ◽  
Noise Analysis ◽  
Good Alternative ◽  
The Body ◽  
Interior Noise ◽  
Vehicle Interior ◽  
Simulation And Optimization ◽  
Vehicle Interior Noise ◽  
Better Than

Finite Element-Statistical Energy Analysis (FE-SEA) hybrid method is better than SEA method for vehicle interior noise analysis in mid frequency. The noise predictions using FE-SEA in mid and SEA in high frequency are good in consistent with the experiments, so the computer-aided simulation using above two methods is a good alternative to experiments. The results shows that the Poly Methyl Meth Acrylate (PMMA) instead of glass as the windshield material can reduce the interior noise at the driver’s ear in mid frequency, also lighten the body weight. The results shows the new polymer transparent material can looked as a good new way for vehicle interior noise reduction and body lightweighting.

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