Prediction of vibration transmission across junctions using diffuse field reciprocity

W. Stalmans; C. Van hoorickx; E. Reynders

Prediction of vibration transmission across junctions using diffuse field reciprocity

W. Stalmans
, C. Van hoorickx
, E. Reynders

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

Abstract

Predicting the sound insulation of an engineering system is a complex problem since multiple transmission paths are usually important. Not only the direct path through a separating element but also the flanking transmission paths can largely influence the sound insulation. With the conventional approach for calculating flanking transmission, it is not possible to calculate vibration transmission across finite junctions. A new approach is proposed which is based on diffuse field reciprocity. The diffuse field reciprocity relationship can be used to calculate the total energy in a vibrating subsystem based on the the direct field dynamic stiffness. The new approach uses analytic expressions for the direct field dynamic stiffness in the wavenumber domain. The direct field dynamic stiffness matrices are converted from the wavenumber domain to the spatial domain using two methods.

Original language	English
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	1721-1730
Number of pages	10
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
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

The research presented in this paper has been performed within the frame of the VirBAcous project (project ID 714591) “Virtual building acoustics: a robust and efficient analysis and optimization framework for noise transmission reduction” funded by the European Research Council in the form of an ERC Starting Grant. The financial support is gratefully acknowledged.

Funders	Funder number
European Union's Horizon 2020 - Research and Innovation Framework Programme	714591
European Resuscitation Council
European Union's Horizon 2020 - Research and Innovation Framework Programme

Cite this

Stalmans, W., Van hoorickx, C., & Reynders, E. (2020). Prediction of vibration transmission across junctions using diffuse field reciprocity. In W. Desmet, B. Pluymers, D. Moens, & S. Vandemaele (Eds.), Proceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics (pp. 1721-1730). Katholieke Universiteit Leuven.

Stalmans, W. ; Van hoorickx, C. ; Reynders, E. / Prediction of vibration transmission across junctions using diffuse field reciprocity. Proceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics. editor / W. Desmet ; B. Pluymers ; D. Moens ; S. Vandemaele. Katholieke Universiteit Leuven, 2020. pp. 1721-1730

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abstract = "Predicting the sound insulation of an engineering system is a complex problem since multiple transmission paths are usually important. Not only the direct path through a separating element but also the flanking transmission paths can largely influence the sound insulation. With the conventional approach for calculating flanking transmission, it is not possible to calculate vibration transmission across finite junctions. A new approach is proposed which is based on diffuse field reciprocity. The diffuse field reciprocity relationship can be used to calculate the total energy in a vibrating subsystem based on the the direct field dynamic stiffness. The new approach uses analytic expressions for the direct field dynamic stiffness in the wavenumber domain. The direct field dynamic stiffness matrices are converted from the wavenumber domain to the spatial domain using two methods.",

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Stalmans, W, Van hoorickx, C & Reynders, E 2020, Prediction of vibration transmission across junctions using diffuse field reciprocity. in W Desmet, B Pluymers, D Moens & S Vandemaele (eds), Proceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics. Katholieke Universiteit Leuven, pp. 1721-1730, 29th International Conference on Noise and Vibration Engineering, ISMA 2020 and 8th International Conference on Uncertainty in Structural Dynamics, USD 2020, Leuven, Belgium, 7/09/20.

Prediction of vibration transmission across junctions using diffuse field reciprocity. / Stalmans, W.; Van hoorickx, C.; Reynders, E.
Proceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics. ed. / W. Desmet; B. Pluymers; D. Moens; S. Vandemaele. Katholieke Universiteit Leuven, 2020. p. 1721-1730.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Stalmans W, Van hoorickx C, Reynders E. Prediction of vibration transmission across junctions using diffuse field reciprocity. In Desmet W, Pluymers B, Moens D, Vandemaele S, editors, Proceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics. Katholieke Universiteit Leuven. 2020. p. 1721-1730

Prediction of vibration transmission across junctions using diffuse field reciprocity

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Bibliographical note

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Cite this