Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Smart Structures and Systems Volume 15, Number 4, April 2015 , pages 963-995 DOI: https://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 |
||
N. Caterino, M. Spizzuoco and A. Occhiuzzi
|
||
| 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. | ||
| Key Words | ||
| semi-active control; shaking table test; magnetorheological damper; control algorithms; smart device | ||
| Address | ||
| N. Caterino: Department of Engineering, Università degli Studi di Napoli Parthenope, Naples, Italy M. Spizzuoco : Department of Structures for Engineering and Architecture, Università degli Studi di Napoli Federico II, Naples, Italy A. Occhiuzzi: Department of Engineering, Università degli Studi di Napoli Parthenope, Naples, Italy; Construction Technologies Institute ITC-CNR, San Giuliano Milanese, Milan, Italy | ||