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A platform for research: civil engineering, architecture and urbanism
Efficient liquid sloshing damper for vibration control
The next generation of tall structures are being designed to be lighter and more flexible making them susceptible to wind, ocean waves and earthquake type of excitations. One approach to vibration control of such systems is through energy dissipation using a liquid sloshing damper. Such dampers are already in use for vibration control of tall structures in Japan and Australia. The present parametric study focuses on enhancing the energy dissipation efficiency of a rectangular liquid damper through introduction of a two-dimensional obstacle. A parametric free vibration study, aimed at optimum size and location of the obstacle, is described first. Results suggest a significant increase in the energy dissipation, up to 60%, in presence of the obstacle. An extensive wind tunnel test-program was undertaken which substantiated effectiveness of the improved damper in suppressing both vortex resonance and galloping types of instabilities. Ability of the damper to control structural oscillations with less amount liquid is quite attractive for real-life applications.
Efficient liquid sloshing damper for vibration control
The next generation of tall structures are being designed to be lighter and more flexible making them susceptible to wind, ocean waves and earthquake type of excitations. One approach to vibration control of such systems is through energy dissipation using a liquid sloshing damper. Such dampers are already in use for vibration control of tall structures in Japan and Australia. The present parametric study focuses on enhancing the energy dissipation efficiency of a rectangular liquid damper through introduction of a two-dimensional obstacle. A parametric free vibration study, aimed at optimum size and location of the obstacle, is described first. Results suggest a significant increase in the energy dissipation, up to 60%, in presence of the obstacle. An extensive wind tunnel test-program was undertaken which substantiated effectiveness of the improved damper in suppressing both vortex resonance and galloping types of instabilities. Ability of the damper to control structural oscillations with less amount liquid is quite attractive for real-life applications.
Efficient liquid sloshing damper for vibration control
Modi, V.J. (author) / Munshi, S.R. (author)
1998
8 Seiten, 26 Quellen
Conference paper
English
An efficient liquid sloshing damper for control of wind-induced instabilities
| Tema Archive | 2002
An efficient liquid sloshing damper for control of wind-induced instabilities
| Online Contents | 2002