000015775 001__ 15775
000015775 005__ 20161115135329.0
000015775 04107 $$aeng
000015775 046__ $$k2013-06-12
000015775 100__ $$aZghal, S.
000015775 24500 $$aReduction Method Applied To Viscoelastically Damped Finite Element Models

000015775 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015775 260__ $$bNational Technical University of Athens, 2013
000015775 506__ $$arestricted
000015775 520__ $$2eng$$aWe propose in this paper to combine the GHM (Golla-Hughes-Mc Tavish) method with model reduction technique, especially direct condensation methods to resolve the problem of increased model order of viscoelastically structures. In fact, modeling structures using the GHM method leads to global systems of equation of motion whose numbers of degrees-offreedom largely exceeds the order of the associated undamped system. As result, the numerical resolution of such equations can require prohibitive computational (CPU) time. So, to overcome this problem, both Static and Dynamic methods are used to reduce the order of finite elements matrices while preserving its capability to represent the dynamic behavior of viscoelastically damped structures. This paper intends to compare these two methods in direct reduction. Numerical example applied to cantilever beam structure is presented. This example will highlight the domain of validity of the studied methods. Results obtained from these two reduction methods are compared with the full model in order to illustrate its performances and its practical interest in the dynamic analysis of viscoelastically damped structures.

000015775 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015775 653__ $$aSandwich, Viscoelastic Materials, Finite Element Modeling, Guyan condensation, Dynamic Condensation.

000015775 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015775 720__ $$aZghal, S.$$iBouazizi, M-L.$$iNasri, R.$$iBouhaddi, N.
000015775 8560_ $$ffischerc@itam.cas.cz
000015775 8564_ $$s278146$$uhttps://invenio.itam.cas.cz/record/15775/files/1435.pdf$$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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000015775 962__ $$r15525
000015775 980__ $$aPAPER