000022077 001__ 22077
000022077 005__ 20170622145955.0
000022077 04107 $$aeng
000022077 046__ $$k2015-05-25
000022077 100__ $$aRawat, Aruna
000022077 24500 $$aSEISMIC ANALYSIS OF BASE-ISOLATED CYLINDRICAL LIQUID STORAGE TANK USING COUPLED ACOUSTIC-STRUCTURAL INTERACTION

000022077 24630 $$n5.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000022077 260__ $$bNational Technical University of Athens, 2015
000022077 506__ $$arestricted
000022077 520__ $$2eng$$aSeismic analysis of three-dimensional (3-D) ground-supported base-isolated cylindrical liquid storage tank is investigated using coupled acoustic-structural interaction approach. In this approach of finite element (FE) method the contained liquid in tank is modeled with acoustic elements, having only pressure degree-of-freedom. By using the present approach the impulsive and convective or sloshing components acting on the tank can be evaluated separately by using the appropriate boundary conditions on the top of free liquid surface. The study is performed for two base isolation systems, elastomeric bearing and sliding system, which are modeled as non-linear connectors in the present study. A parametric study is performed to study the effectiveness of the proposed analysis method for broad and slender base-isolated tanks. The sloshing displacement and base shear time history responses are evaluated for 3-D tanks subjected to uni-directional earthquake ground motions. The FE time history responses are compared with the non-isolated 3-D tanks and it is found that the impulsive component of base shear has reduced more as compared to convective component of base shear. It is also seen that sloshing displacement was unaffected by the application of both the isolation systems.

000022077 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000022077 653__ $$aBase isolation, Base shear, Coupled acoustic-structure, Finite element, Liquid storage tank, Seismic analysis, Sloshing.

000022077 7112_ $$aCOMPDYN 2015 - 5th International Thematic Conference$$cCrete (GR)$$d2015-05-25 / 2015-05-27$$gCOMPDYN2015
000022077 720__ $$aRawat, Aruna$$iNagpal, A.K.$$iMatsagar, Vasant
000022077 8560_ $$ffischerc@itam.cas.cz
000022077 8564_ $$s392104$$uhttps://invenio.itam.cas.cz/record/22077/files/C1139.pdf$$yOriginal version of the author's contribution as presented on CD, section: 
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000022077 962__ $$r22030
000022077 980__ $$aPAPER