Reduction of the structure-acoustic problem using normal modes and lanczos vectors
(2003) Proceedings of the Tenth International Congress on Sound and Vibration p.2203-2210- Abstract
- The coupled structure-acoustic problem is studied using the finite element method. An efficient strategy for solving the coupled eigenvalue problem is proposed. The strategy uses a limited number of the uncoupled structural normal modes and acoustic fluid normal modes together with a set of interface-dependant Lanczos vectors for each domain to reduce the coupled problem. The Lanczos vectors are calculated by applying the vectors derived from the movement of the uncoupled modes of the interacting domain. For example, the pressure distribution of the fluid modes are used to generate the Lanczos vectors for the structural domain. This ends up in a very compact coupled eigenvalue problem to be solved. The method is investigated in a numerical... (More)
- The coupled structure-acoustic problem is studied using the finite element method. An efficient strategy for solving the coupled eigenvalue problem is proposed. The strategy uses a limited number of the uncoupled structural normal modes and acoustic fluid normal modes together with a set of interface-dependant Lanczos vectors for each domain to reduce the coupled problem. The Lanczos vectors are calculated by applying the vectors derived from the movement of the uncoupled modes of the interacting domain. For example, the pressure distribution of the fluid modes are used to generate the Lanczos vectors for the structural domain. This ends up in a very compact coupled eigenvalue problem to be solved. The method is investigated in a numerical example. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/612417
- author
- Davidsson, Peter LU and Sandberg, Göran LU
- organization
- publishing date
- 2003
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Structure-acoustic problem, Interacting domain, Modal reduction, Fluid domain
- host publication
- Proceedings of the 10th International Congress on Sound and Vibration
- pages
- 8 pages
- publisher
- Institute of Acoustics
- conference name
- Proceedings of the Tenth International Congress on Sound and Vibration
- conference location
- Stockholm, Sweden
- conference dates
- 2003-07-07 - 2003-07-10
- external identifiers
-
- scopus:2342423818
- language
- English
- LU publication?
- yes
- id
- 4aaa80a6-eae6-4ce1-8ff9-2a2f306405ad (old id 612417)
- date added to LUP
- 2016-04-04 11:20:32
- date last changed
- 2022-02-21 04:33:34
@inproceedings{4aaa80a6-eae6-4ce1-8ff9-2a2f306405ad, abstract = {{The coupled structure-acoustic problem is studied using the finite element method. An efficient strategy for solving the coupled eigenvalue problem is proposed. The strategy uses a limited number of the uncoupled structural normal modes and acoustic fluid normal modes together with a set of interface-dependant Lanczos vectors for each domain to reduce the coupled problem. The Lanczos vectors are calculated by applying the vectors derived from the movement of the uncoupled modes of the interacting domain. For example, the pressure distribution of the fluid modes are used to generate the Lanczos vectors for the structural domain. This ends up in a very compact coupled eigenvalue problem to be solved. The method is investigated in a numerical example.}}, author = {{Davidsson, Peter and Sandberg, Göran}}, booktitle = {{Proceedings of the 10th International Congress on Sound and Vibration}}, keywords = {{Structure-acoustic problem; Interacting domain; Modal reduction; Fluid domain}}, language = {{eng}}, pages = {{2203--2210}}, publisher = {{Institute of Acoustics}}, title = {{Reduction of the structure-acoustic problem using normal modes and lanczos vectors}}, year = {{2003}}, }