Seismic Performance of a Piezoelectric Friction Damper in Reducing the Peak Response of a 1/4-Scaled Steel Frame Building
A previously proposed semi-active control algorithm was employed to drive a prototype piezoelectric friction damper, which was installed on the first story of a 1/4-scale, 3-story building model. The performance of the damper and the simple semi-active control strategy were evaluated both numerically and experimentally under four modified earthquake ground motion records of various amplitudes. The seismic effectiveness and adaptability of the algorithm as well as the effect of damper saturation on structural responses were investigated. Numerical simulations agree well with the experimental results. The proposed control strategy not only effectively suppresses the structural vibration but also is adaptive to varying excitations from weak to strong earthquakes. Experimental results indicate that a piezoelectric friction damper with slight saturation could be advantageous to the seismic mitigation of buildings. However, significant saturation will degrade the performance of the semi-active control strategy.
C. Chen and G. Chen, "Seismic Performance of a Piezoelectric Friction Damper in Reducing the Peak Response of a 1/4-Scaled Steel Frame Building," Proceedings of the Structures Congress - Building on the Past: Securing the Future (2004, Nashville, TN), pp. 737-746, American Society of Civil Engineers (ASCE), May 2004.
The definitive version is available at http://dx.doi.org/10.1061/40700(2004)80
Structures Congress - Building on the Past: Securing the Future (2004: May 22-26, Nashville, TN)
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Algorithms; Buildings; Computer Simulation; Damping; Earthquakes; Friction; Piezoelectricity; Seismology; Piezoelectric Friction Dampers (PFD); Shake Table Tests; Steel Frame Buildings; Steel Construction
International Standard Book Number (ISBN)
Article - Conference proceedings
© 2004 American Society of Civil Engineers (ASCE), All rights reserved.