000004611 001__ 4611
000004611 005__ 20141119144538.0
000004611 04107 $$aeng
000004611 046__ $$k2002-06-02
000004611 100__ $$aMoussaoui, S.E.
000004611 24500 $$aTHE USE OF RITZ VECTORS IN A COMPARATIVE STUDY FOR VIBRATORY ANALYSIS OF DAM-FOUNDATION SYSTEMS

000004611 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004611 260__ $$bColumbia University in the City of New York
000004611 506__ $$arestricted
000004611 520__ $$2eng$$aAn investigation of the free vibration behaviour of soil - structure systems is conducted by using conjointly the sub-structure method and the orthogonal Ritz vector procedure. Two soil-dam dynamic interaction models are successively examined for that purpose. Two extreme hypothetical cases of rigid and flexible soil-foundation behaviour are considered. The results obtained in this study, show clearly that the load dependent Ritz vector basis is more efficient than that of the exact eigenvectors in terms of accuracy and convergence, regardless of the dynamic interaction models and more importantly for the rigid behaviour of soil-dam systems. Furthermore, an empirical rule is proposed in order to accurately estimate the number of the first P eigenmodes of the complete system soil-dam of order N, from a limited vibration mode number of the reduced system of size L (L<<N).

000004611 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004611 653__ $$asoil-structure Interaction, gravity dam, dynamic of structure, finite element, Ritz vectors, eigenvectors, modal participation ratio.

000004611 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004611 720__ $$aMoussaoui, S.E.$$iTiliouine, B.$$iAchour, B.
000004611 8560_ $$ffischerc@itam.cas.cz
000004611 8564_ $$s374015$$uhttp://invenio.itam.cas.cz/record/4611/files/051.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004611 962__ $$r4594
000004611 980__ $$aPAPER