Abstract
The effect of fluid on the dynamic pressure distribution of a rectangular lock gate structure subjected to external harmonic ground acceleration is studied. The fluid is assumed to be inviscid and incompressible, having an irrotational flow. Pressure for fluid domain and displacement for lock gate are considered as nodal variables in the finite element formulation. The interaction of coupled problem is maintained by transferring acceleration of the lock gate to fluid and pressure of the fluid to lock gate. Mindlin’s plate theory is used to formulate the lock gate. The Laplace equation is solved using Fourier half range cosine series expansion to truncate the far boundary nearer to the lock gate. The time dependent forced vibration equations are solved by using Newmark-beta time integration method.
Highlights
Fluid-structure interaction (FSI) phenomena occurs in numerous structures like lock gates, dams, marine offshores structure, tanks, piping systems, bridges, chimneys etc
The external force developed may be due to sloshing at the top of fluid surface, wind loading, ground motion, etc. and it is really a typical and interesting problem to predict the response of the structure in these kind of loading conditions
A dam-reservoir system was investigated the effect of hydrodynamic pressure of the fluid on dam subjected to harmonic ground motions [2]
Summary
Fluid-structure interaction (FSI) phenomena occurs in numerous structures like lock gates, dams, marine offshores structure, tanks, piping systems, bridges, chimneys etc. Such structures, during their life period, come in direct contact with fluids and dynamic loading is induced from the fluid, thereby necessitating analysis of such interaction phenomena for safe and economical design. The external force developed may be due to sloshing at the top of fluid surface, wind loading, ground motion, etc. A technique was developed to investigate the dynamic response of the dams subjected to a harmonic horizontal ground motion [1]. A dam-reservoir system was investigated the effect of hydrodynamic pressure of the fluid on dam subjected to harmonic ground motions [2].
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