The sources of variability in the statistical energy analysis of two rectangular plates
The sources of variability in the statistical energy analysis of two rectangular plates
In this research, the sources of variability in SEA coupling are systematically investigated and appropriate parameters are established to determine the variability of the effective CLF in the mid to high frequency range. Finally the effect of the variability in the CLF on the resulting response is investigated and the confidence intervals of the SEA predictions are discussed.
A system consisting of two rectangular plates is considered and the exact dynamic response of the system is investigated by using the dynamic stiffness method (DSM). The effective CLF for a particular realisation of the system is evaluated by a ‘numerical experiment’ using the SEA power balance equations and compared with the CLFs obtained from various methods.
The influence of the modal behaviour of the source or the receiver subsystem or both on the energy transmission between the two subsystems is investigated by considering various analytical models, which include an infinite source plate coupled to a finite receiver plate or vice versa. For these models, the transmission efficiency or the effective CLF are evaluated using the wave approach and/or the DSM.
The variability of the effective CLF is investigated by a series of systematic parameter variations in the DSM model. An empirical model is derived for the confidence interval of the effective CLF in terms of the modal overlap factor and the number of modes in a frequency band. The model for the variability of the CLF has then been validated using an experimental study. The reliability and accuracy of this empirical model is discussed in comparison with previously published models. The sensitivity of the resulting SEA prediction due to the variation of the CLF is subsequently investigated by Monte Carlo simulation.
University of Southampton
Park, Woo Sun
56cda9b9-c433-409b-bff1-a9eb2b043cd1
2003
Park, Woo Sun
56cda9b9-c433-409b-bff1-a9eb2b043cd1
Park, Woo Sun
(2003)
The sources of variability in the statistical energy analysis of two rectangular plates.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
In this research, the sources of variability in SEA coupling are systematically investigated and appropriate parameters are established to determine the variability of the effective CLF in the mid to high frequency range. Finally the effect of the variability in the CLF on the resulting response is investigated and the confidence intervals of the SEA predictions are discussed.
A system consisting of two rectangular plates is considered and the exact dynamic response of the system is investigated by using the dynamic stiffness method (DSM). The effective CLF for a particular realisation of the system is evaluated by a ‘numerical experiment’ using the SEA power balance equations and compared with the CLFs obtained from various methods.
The influence of the modal behaviour of the source or the receiver subsystem or both on the energy transmission between the two subsystems is investigated by considering various analytical models, which include an infinite source plate coupled to a finite receiver plate or vice versa. For these models, the transmission efficiency or the effective CLF are evaluated using the wave approach and/or the DSM.
The variability of the effective CLF is investigated by a series of systematic parameter variations in the DSM model. An empirical model is derived for the confidence interval of the effective CLF in terms of the modal overlap factor and the number of modes in a frequency band. The model for the variability of the CLF has then been validated using an experimental study. The reliability and accuracy of this empirical model is discussed in comparison with previously published models. The sensitivity of the resulting SEA prediction due to the variation of the CLF is subsequently investigated by Monte Carlo simulation.
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Published date: 2003
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Local EPrints ID: 464868
URI: http://eprints.soton.ac.uk/id/eprint/464868
PURE UUID: e5fd168f-19e8-4eb5-8183-55038f9d9f76
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Date deposited: 05 Jul 2022 00:06
Last modified: 16 Mar 2024 19:47
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Author:
Woo Sun Park
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