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http://dx.doi.org/10.12989/sss.2015.15.4.963

Shaking table testing of a steel frame structure equipped with semi-active MR dampers: comparison of control algorithms  

Caterino, N. (Department of Engineering, Universita degli Studi di Napoli Parthenope)
Spizzuoco, M. (Department of Structures for Engineering and Architecture, Universita degli Studi di Napoli Federico II)
Occhiuzzi, A. (Department of Engineering, Universita degli Studi di Napoli Parthenope)
Publication Information
Smart Structures and Systems / v.15, no.4, 2015 , pp. 963-995 More about this Journal
Abstract
The effectiveness of the various control algorithms for semi-active structural control systems proposed in the literature is highly questionable when dealing with earthquake actions, which never reach a steady state. From this perspective, the paper summarizes the results of an experimental activity aimed to compare the effectiveness of four different semi-active control algorithms on a structural mock up representative of a class of structural systems particularly prone to seismic actions. The controlled structure is a near full scale 2-story steel frame, equipped with two semi-active bracing systems including two magnetorheological dampers designed and manufactured in Europe. A set of earthquake records has been applied at the base of the structure, by utilizing a shaking table facility. Experimental results are compared in terms of displacements, absolute accelerations and energy dissipation capability. A further analysis on the percentage incidence of undesired and/or unpredictable operations corresponding to each algorithm gives an insight on some factors affecting the reliability and, in turn, the real effectiveness of semi-active structural control systems.
Keywords
semi-active control; shaking table test; magnetorheological damper; control algorithms; smart device;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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