A Technique to Identify the Structure Borne Sound Sources Induced by Powertrain Vibration Behavior 951235
Identification of structure borne sound sources induced by the structural vibration of an automotive powertrain has been studied. Based on the principal component analysis which uses singular value decomposition of a matrix consisting of the auto- and cross-spectra, the operating vibrational analysis is performed. The quantitative description of the output power due to intrinsic incoherent source is addressed.
The applicability of the technique is tested both numerically and experimentally. First, the coherence analysis is numerically carried out with a simple structure which is modeled as multi-input and single output to identify the structure borne noise generation process. Second, the actual vibrational behavior of a powertrain structure and the interior noise analysis of a car under the running condition are carried out. The technique is shown to be very effective in the identification of the structure borne noise sources.
Citation: Lee, J., Yeo, S., and Bang, J., "A Technique to Identify the Structure Borne Sound Sources Induced by Powertrain Vibration Behavior," SAE Technical Paper 951235, 1995, https://doi.org/10.4271/951235. Download Citation
Author(s):
Jae-Kab Lee, Seung-Dong Yeo, Jung-Hwan Bang
Affiliated:
Hyundai Motor Co.
Pages: 8
Event:
SAE Noise and Vibration Conference and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Proceedings of the 1995 Noise and Vibration Conference-P-291
Related Topics:
Interior noise
Vibration
Powertrains
Noise
Identification
Bearings
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