000015662 001__ 15662
000015662 005__ 20161115135326.0
000015662 04107 $$aeng
000015662 046__ $$k2013-06-12
000015662 100__ $$aChronopoulos, D.
000015662 24500 $$aEfficient Calculation of the Response of a Structural Acoustic System Under Aerodynamic Excitations

000015662 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015662 260__ $$bNational Technical University of Athens, 2013
000015662 506__ $$arestricted
000015662 520__ $$2eng$$aThe problem of the dynamic response of a structural-acoustic system in the midfrequency range is hereby considered. The system is initially modelled using finite elements, and is subsequently reduced using the Second Order Arnoldi Reduction method (SOAR) resulting in radical reduction of calculation times. The fully coupled system is modelled using a Statistical Energy Analysis like (SEA-like) approach, and the energetic characteristics for each subsystem are computed and compared to the direct FEM solution. The error with respect to the full FE solution is presented and the limits of the reliability of the reduction are explored. The loading applied to the model comprises typical random aeroacoustic excitations, such as a diffused sound field and a Turbulent Boundary Layer (TBL) excitation.

000015662 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015662 653__ $$aFluid-structure interaction, Composite structures, Krylov-subspace methods, Random excitations

000015662 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015662 720__ $$aChronopoulos, D.$$iIchchou, M.$$iTroclet, B.
000015662 8560_ $$ffischerc@itam.cas.cz
000015662 8564_ $$s459021$$uhttps://invenio.itam.cas.cz/record/15662/files/1217.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-MS 06 LOW COST METHODS FOR ROBUST DESIGN IN' STRUCTURAL' DYNAMICS AND VIBROACOUSTICS
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000015662 962__ $$r15525
000015662 980__ $$aPAPER