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Identification of Vibro-Acoustic Coupled Modes for Vehicle
Technical Paper
2014-01-0031
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In performing noise control design for vehicles, there is a benefit to identifying important vibro-acoustic coupled mode. The purpose of this study is “identifying the coupled mode of a vehicle through FRF (frequency response function) measurement”. A speaker which measure the internal acoustic pressure was used as a new experimental method. An acoustic input is estimated by the fluctuation of the acoustic pressure inside the speaker box. Acoustic pressures are measured by using some microphones, the vibrations of the structure are measured by using some accelerometers. Main experiment was carried out for measure the vibro-acoustic mode. First acoustic mode was identified in about 66 Hz. And structure associated mode with this mode was identified. Hence, the vibro-acoustic mode identification was carried out.
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Topic
Citation
Watanabe, T. and Yoshimura, T., "Identification of Vibro-Acoustic Coupled Modes for Vehicle," SAE Technical Paper 2014-01-0031, 2014, https://doi.org/10.4271/2014-01-0031.Also In
References
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