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Reduction of the st...
Reduction of the structure-acoustic problem using normal modes and lanczos vectors
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- Davidsson, Peter (author)
- Lund University,Lunds universitet,Byggnadsmekanik,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Structural Mechanics,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Sandberg, Göran (author)
- Lund University,Lunds universitet,Byggnadsmekanik,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Structural Mechanics,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH
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(creator_code:org_t)
- 2003
- 2003
- English 8 s.
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In: Proceedings of the 10th International Congress on Sound and Vibration. ; , s. 2203-2210
- Related links:
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https://lup.lub.lu.s...
Abstract
Subject headings
Close
- 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
Keyword
- Structure-acoustic problem
- Interacting domain
- Modal reduction
- Fluid domain
Publication and Content Type
- kon (subject category)
- ref (subject category)
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