A Computational Approach to Evaluate the Vehicle Interior Noise from Greenhouse Wind Noise Sources - Part II

2011 ◽  
Author(s):  
Anna Graf ◽  
David Lepley ◽  
Sivapalan Senthooran
Keyword(s):  
Computational Approach ◽  
Interior Noise ◽  
Vehicle Interior ◽  
Noise Sources ◽  
Wind Noise ◽  
Vehicle Interior Noise

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 CFD/SEA Approach for Prediction of Vehicle Interior Noise due to Wind Noise

2009 ◽  
Author(s):  
Philippe Moron ◽  
Robert Powell ◽  
Dave Freed ◽  
Franck Perot ◽  
Bernd Crouse ◽  
...  
Keyword(s):  
Interior Noise ◽  
Vehicle Interior ◽  
Wind Noise ◽  
Vehicle Interior Noise

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.

Case study: Separating source contributions of vehicle interior noise by operational transfer path analysis

2021 ◽  
Vol 69 (1) ◽  
pp. 39-52
Author(s):  
Ming-Hung Lu ◽  
Ming Une Jen ◽  
Dennis de Klerk
Keyword(s):  
Path Analysis ◽  
Interior Noise ◽  
Vehicle Interior ◽  
Noise Sources ◽  
Tire Noise ◽  
Transfer Path ◽  
Vehicle Interior Noise ◽  
Transfer Path Analysis ◽  
Noise Contribution

The perception of vehicle interior noise is a key quality index to customers and automakers alike. By tracing noise back to key noise sources and paths, one can focus their refinement efforts. Aiming at the most efficient way to identify the primary noise sources in a vehicle cabin, this article establishes a framework of operational transfer path analysis (OTPA) for separating contributions of noise sources by operational measurements only. OTPA model design, measuring essentials and synthesis method used for separating vehicle interior noise contributions from the powertrain, tires andwindwere described in detail. To comprehend the implementation of OTPA on noise source separation, this article also addresses an exemplification study on an electric vehicle. In the case study illustrated, both spectral map and order extractions were used to validate if the OTPA synthesized results of the powertrain noise contribution agreed with the measured results. Tire noise contribution was validated using the tires driven by the dynamometer along with all other systems switched off. With well-validated OTPA model for the powertrain and tires, further individual path breakdown of the powertrain and tire noise then was investigated to identify key contributors to the interior noise. After clearly separating interior noise contributions, one therefore could design effective countermeasures to mitigate the dominant noise sources. With appropriate scheme of measurement and synthesis, the OTPA technique could therefore effectively serve target setting and refinement focus at foremost noise contributors.

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