Abstract
The transfer matrix method (TMM) is a well-known method for the propagation of waves in layered media of fluid, elastic and porous nature. Up to now it has been used extensively to analyze airborne sound transmission and sound absorption. Its use for impact sound transmission has been investigated to a limited extent, i.e. for thick homogeneous elastic plates of infinite extent and with an approximate computation of the radiated sound power. This contribution aims to broaden the scope, such that the radiated sound power of structures which also contain fluid and/or porous layers can be analyzed in a more robust way. A disadvantage of the conventional TMM is that only floors of infinite extent can be implemented. It is possible to remove this drawback by taking the modal behavior of the floor into account in an approximate way, which is achieved by projecting the floor displacements onto a set of sinusoidal basis functions. Predictions of the radiated sound power are made for various single and multilayered floors of both infinite and finite extent.
| Original language | English |
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| Title of host publication | Proceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics |
| Editors | W. Desmet, B. Pluymers, D. Moens, S. Vandemaele |
| Publisher | Katholieke Universiteit Leuven |
| Pages | 1761-1775 |
| Number of pages | 15 |
| ISBN (Electronic) | 9789082893113 |
| Publication status | Published - 2020 |
| Externally published | Yes |
| Event | 29th International Conference on Noise and Vibration Engineering, ISMA 2020 and 8th International Conference on Uncertainty in Structural Dynamics, USD 2020 - Leuven, Belgium Duration: 7 Sept 2020 → 9 Sept 2020 |
Conference
| Conference | 29th International Conference on Noise and Vibration Engineering, ISMA 2020 and 8th International Conference on Uncertainty in Structural Dynamics, USD 2020 |
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| Abbreviated title | ISMA 2020 |
| Country/Territory | Belgium |
| City | Leuven |
| Period | 7/09/20 → 9/09/20 |
Bibliographical note
Publisher Copyright:© 2020 Proceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics. All rights reserved.
Funding
This research was funded by the European Research Council (ERC) Executive Agency, in the form of an ERC Starting Grant provided to Edwin Reynders under the Horizon 2020 framework program, project 714591 VirBAcous. The financial support from the European Commission is gratefully acknowledged.