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.
| Original language | English |
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| Title of host publication | Proceedings of the 10th International Congress on Sound and Vibration |
| Publisher | Institute of Acoustics |
| Pages | 2203-2210 |
| Number of pages | 8 |
| Publication status | Published - 2003 |
| Event | Proceedings of the Tenth International Congress on Sound and Vibration - Stockholm, Sweden Duration: 2003 Jul 7 → 2003 Jul 10 |
Conference
| Conference | Proceedings of the Tenth International Congress on Sound and Vibration |
|---|---|
| Country/Territory | Sweden |
| City | Stockholm |
| Period | 2003/07/07 → 2003/07/10 |
Subject classification (UKÄ)
- Mechanical Engineering
Free keywords
- Structure-acoustic problem
- Interacting domain
- Modal reduction
- Fluid domain