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Measurement and modeling of damping for time-domain structural acoustics simulations
- Source :
- Noise-Con 2013, Noise-Con 2013, Aug 2013, Denver, CO, United States. CD-ROM proceedings
- Publication Year :
- 2013
- Publisher :
- HAL CCSD, 2013.
-
Abstract
- International audience; This work deals with the measurement and time-domain modeling of damping in structural acoustics. An experimental technique based on the plate impulse response measurement is presented to estimate the damping factor over a wide frequency band. This technique is succesfully applied to a nylon plate between 100 Hz and 15 kHz approximately. Then we present an original approach that consists in representing the measured frequency variations of damping by a digital filter that meets the criteria of causality and stability, and then in transposing it into the time domain. Time-domain simulations of the longitudinal vibrations of a nylon bar are performed to show the efficiency of our approach, where the filter parameters are estimated from the experimental data through an optimization procedure.
- Subjects :
- [SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph]
[SPI.ACOU] Engineering Sciences [physics]/Acoustics [physics.class-ph]
[PHYS.MECA.ACOU] Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph]
[PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph]
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Noise-Con 2013, Noise-Con 2013, Aug 2013, Denver, CO, United States. CD-ROM proceedings
- Accession number :
- edsair.dedup.wf.001..3223a43caf166dc9b837e01a89a26c91