Abstract
The estimation formulas for linear damping ratios of rectangular TLD tanks equipped with bottom-mounted vertical baffles or symmetrically wall-mounted horizontal baffles were derived based on the energy dissipation principle under sinusoidal excitation. The formula for the damping ratio of the tank was revised through introduction of the velocity potential function correction factor to consider the hydrodynamic interaction effect between the baffles. Furthermore, several shaking table tests were conducted on a scaled-down rectangular TLD water tank to validate the proposed analytical model for damping ratio estimation. Comparisons between predicted and measured damping ratios show that, the hydrodynamic interaction effects between the baffles with small spacings could reduce the damping ratio of the rectangular water tank. The estimated damping ratio of the rectangular water tank has higher accuracy with the proposed method in view of hydrodynamic interaction effects between baffles.
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