FREE VIBRATION RESPONSE ANALYSIS OF BURIEDCYLINDRICAL STORAGE TANKS
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Abstract
This study presents a reliable and effective idealization scheme for the free vibration analysis
of buried cylindrical storage tanks. The three dimensional problem is transformed into a two
dimensional one by using a semi analytical finite element procedure. Conical shell of
revolution element is used. to represent the cylindrical wall, top plate, and bottom plate of the
tank by an appropriate method. The Combined effect of structure-soil-fluid interaction is of
primary importance as concluded in this work. The soil medium is idealized by the elastic half
space model, that is, linear springs are assumed to represent the structure-soil interface, added
masses and viscous dampers of soil are also included. The liquid region is treated analytically;
also analytical integration is used to got the added stillness and mass matrices for hydrostatic
and hydrodynamic pressure effects, respectively. The free vibration characteristics of the
liquid storage tank are validated against experimen.tal and theoretical results available in
literatures.
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References
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