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Abstract
A tuned liquid damper (TLD) filled with porous media is developed to promote an additional damping force for the conventional system. According to Darcy's law, the permeability of porous media and liquid viscosity form a damping force linearly proportional to fluid velocity. In this paper, an equivalent mechanical system considering the damping due to porous media in rectangular TLD is established. In contrast to the other operating TLDs with damping devices, the natural frequency and damping ratio of TLD in the present paper can be obtained without using empirical formulas. The dynamic characteristics and performances are also discussed.
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