This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Application of Experimental Transfer Path Analysis and Hybrid FRF-Based Substructuring Model to Structure-Borne Noise
Technical Paper
2015-01-2267
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
This paper describes a structure-borne noise reduction process that was developed using a combination of experimental and analytical methods. First, the major noise paths were identified using experimental Transfer Path Analysis (TPA). Next, FEA-Experimental modeling and forced response simulation were conducted using the Hybrid FEA-Experimental FRF method. The Hybrid FEA-Experimental FRF-Based Substructuring (FBS) model was used along with Operational Deflection Shape (ODS) and Modal Analysis. The Hybrid FEA-Experimental model consisted of an experimental FRF representation of the body and a finite element model of a sub-frame. The finite element of the sub-frame was created by using Altair HyperMesh from CATIA images and the dynamic analysis was carried out by using MSC Nastran. The natural frequency and frequency response function of the finite element sub-frame model were compared with that of a real sub-frame to determine the validity of applying the Hybrid FBS method. By comparing the results based on the finite element model with the predicted results of a real sub-frame, the usefulness of the Hybrid FBS application was confirmed. The Hybrid FEA-Experimental FRF model was then used to simulate the structure-borne noise reduction that would be obtained using a modified frame, prior to the availability of a prototype. Modified hardware testing was used as the final step in the process to confirm the results of the simulation.
Recommended Content
Authors
Citation
Kim, Y., Kim, C., Lee, J., and Kim, S., "Application of Experimental Transfer Path Analysis and Hybrid FRF-Based Substructuring Model to Structure-Borne Noise," SAE Technical Paper 2015-01-2267, 2015, https://doi.org/10.4271/2015-01-2267.Also In
References
- Ren , Y. and Beards , C. F. On Substructure Synthesis with FRF Data J. of Sound and Vibration 185 5 845 86 1994
- Lee , S. K. and Kim , S. J. The Analysis of Vehicle Interior Noise by the Powertrain and Measurement of Noise Transfer Function using Vibro-Acoustic Reciprocity Proceedings of the KSNVE Annual Spring Conference 2007
- LMS Application Note, FRF Based Substructuring Overview and Theory, LMS International www.lmsna.com
- LMS Application Note, Transfer Path Analysis -Overview and Exercises, LMS International www.lmsna.com
- Mir , H. Test Based Methods for High Frequency Structureborne Noise SAE Technical Paper 2001-01-1523 2001 10.4271/2001-01-1523
- Tsai , J. S. and Chou , Y. F. The Identification of Dynamic Characteristics of a Single Bolt Joint J. of Sound and Vibration 125 487 50 1988
- Jeong , M. S. , Kook , H. S. , Ko , K. H. , Heo , S. J. and Kim , C. M A Study on the Test Procedure to Identify the Noise Sources and the Design Improvements for the Reduction of the Interior Noise of Passenger Vehicles Proceedings of KSAE Annual Autumn Conference 786 791 2003