Hence, the seismic behaviour and vibration of cylindrical liquid storage tanks, subjected to earthquakes, is of paramount importance, and it is investigated in this paper. The Finite Element Method is used to evaluate seismic response in addition to the reduction of excessive liquid sloshing in the tank when subjected to the long-period ground motion.
The non-linear stress-strain behaviour pertaining to polymers and rubbers is implemented while non-linear contact elements are employed to describe the 3-D surface-to-surface contact. Therefore, Nonlinear Procedures are used to investigate the fluid-structure interactions FSI between liquid and the tank wall while there is incompressible liquid.
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In such cases, it is possible to perform empirical studies but also theoretical analyses for simple geometries  or numerical simulations for more complex cases. In sedimentary basins , site effects also lead to the generation of surface waves at the basin edges.
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This phenomenon may significantly strengthen the amplification of the seismic motion. The aggravation of the amplification level when compared to the case of horizontal layering may be up to a factor of 5 or It depends on the velocity contrast between the layers and the geometry of the basin.
The theoretical analysis of site effects in canyons or semi-circular sedimentary basins has been performed through semi-analytical methods in the early 80's. Depending on the basin geometry, the aggravation of site effects is different from that of the horizontally layered case.
The plurality effect of topographical irregularities on site seismic response | SpringerLink
When the mechanical properties of the sedimentary basin are known, we may simulate site effects numerically. Figure 4 depicts the amplification phenomenon for the city of Caracas. Numerous geological sites have been investigated by various researchers for weak earthquakes as well as for strong ones cf synthesis .
- The plurality effect of topographical irregularities on site seismic response.
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In the latter case, it is necessary to account for the nonlinear behavior of the soil under large loading  or even the soil liquefaction which may lead to the soil failure. From Wikipedia, the free encyclopedia. The two dimensional resonance of sediment filled valleys, Bulletin of the Seismological Society of America , 75, pp.
Bulletin of Earthquake Engineering. Bulletin of the Seismological Society of America Submitted manuscript. CrossRef Google Scholar. Google Scholar.
Eurocode 8, Design of structures for earthquake resistance. The European Union Per Regulation, Iran National Code, No.dev.vankaarstotservet.nl
Seismic Effects on Structures, Volume 67
In Persian Google Scholar. Plaxis, Structural Wiki.
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