Abstract
AbstractThe U‐shaped tuned liquid column damper (TLCD) increases the effective structural damping of horizontal vibrations similar to the classical tuned mechanical pendulum type damper (TMD). The pipe‐in‐pipe TLCD applies to vertical vibrations, likewise to the spring‐mass‐dashpot TMD. When sealed, the gas‐spring effect extends the frequency range of application to about five Hertz. The geometric analogy between the novel TLCD and the TMD still exists, making the first step in the tuning procedure “classical”. Subsequent fine tuning in state space when the TLCD is split into smaller ones in parallel action, renders an even more robust passive action. The experimentally observed averaged turbulent damping of the relative fluid flow and the weakly nonlinear gas‐spring render the TLCD insensitive to overloads and parametric forcing. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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