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Performance of Tuned Liquid Dampers with Different Tank Geometries for Vibration Control of Structures

TLD is a tank filled with water and serves as a dynamic vibration absorber for passive control of structures. This paper addresses the comparisons of TLD performances corresponding to different tank geometries including rectangular and conical shapes. Due to the importance of water and tank weight as a load on top of a building, volume is considered to be a constant parameter in this study. First, some explanations are provided to elaborate more on theories that are applied to movement and sloshing analysis of liquids in the tanks. The assumptions used for simplification of the problem are presented afterwards and TLD behaviour is discussed by comparing its response under external dynamic excitation. Through a numerical simulation, vibrations with different amplitudes are applied to TLDs. Performance charts are developed and subsequently utilized to present findings from this study. Comparisons are made for the dissipated energy by a TLD with a certain tank shape is also demonstrated.