Damping Ratio Analysis of Rectangular TLD Tanks With Hydrodynamic Interaction Effects Between Baffles

ZHONG Wenkun; WU Jiurong; SUN Lianyang

doi:10.21656/1000-0887.410154

Volume 42 Issue 1

Jan. 2021

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ZHONG Wenkun, WU Jiurong, SUN Lianyang. Damping Ratio Analysis of Rectangular TLD Tanks With Hydrodynamic Interaction Effects Between Baffles[J]. Applied Mathematics and Mechanics, 2021, 42(1): 71-81. doi: 10.21656/1000-0887.410154

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Damping Ratio Analysis of Rectangular TLD Tanks With Hydrodynamic Interaction Effects Between Baffles

doi: 10.21656/1000-0887.410154

Guangzhou UniversityTamkang University Joint Research Center for Engineering Structure Disaster Prevention and Control, Guangzhou University, Guangzhou 510006, P.R.China

Funds: The National Natural Science Foundation of China（51778161;51925802）

Received Date: 2020-05-27
Rev Recd Date: 2020-06-16
Publish Date: 2021-01-01

Abstract

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.
- rectangular TLD tank,
- energy dissipation principle,
- baffle,
- linear damping ratio,
- shaking table test,
- hydrodynamic interaction effect

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References(22)

References

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