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Designing semi-active multiple liquid column dampers for nonlinear structures

Designing semi-active multiple liquid column dampers for nonlinear structures In this paper, a semi-active multiple liquid column damper (SAMLCD) has been designed and its performance has been evaluated in mitigating the vibrations of nonlinear structures under seismic records. For optimal design of SAMLCD, an optimisation problem is defined to determine the optimal value of the head loss coefficient at each time step in which the maximum drift of the structure is minimised and the optimisation problem is solved by genetic algorithm (GA). The results show that the algorithm used to optimally design SAMLCD with a large number of variables is suitable due to its simplicity and efficiency. The amount of drift in a structure equipped with SAMLCD has been improved in comparison to that of uncontrolled structure under-considered earthquakes. Also, the comparison between the performance of SAMLCD and that of multi-liquid column damper (MLCD) indicates that in some cases SAMLCD has shown better performance than MLCD under studied earthquakes. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Structural Engineering Inderscience Publishers

Designing semi-active multiple liquid column dampers for nonlinear structures

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Publisher
Inderscience Publishers
Copyright
Copyright © Inderscience Enterprises Ltd
ISSN
1758-7328
eISSN
1758-7336
DOI
10.1504/ijstructe.2022.123744
Publisher site
See Article on Publisher Site

Abstract

In this paper, a semi-active multiple liquid column damper (SAMLCD) has been designed and its performance has been evaluated in mitigating the vibrations of nonlinear structures under seismic records. For optimal design of SAMLCD, an optimisation problem is defined to determine the optimal value of the head loss coefficient at each time step in which the maximum drift of the structure is minimised and the optimisation problem is solved by genetic algorithm (GA). The results show that the algorithm used to optimally design SAMLCD with a large number of variables is suitable due to its simplicity and efficiency. The amount of drift in a structure equipped with SAMLCD has been improved in comparison to that of uncontrolled structure under-considered earthquakes. Also, the comparison between the performance of SAMLCD and that of multi-liquid column damper (MLCD) indicates that in some cases SAMLCD has shown better performance than MLCD under studied earthquakes.

Journal

International Journal of Structural EngineeringInderscience Publishers

Published: Jan 1, 2022

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