Title

Seismic Performance of a Piezoelectric Friction Damper in Reducing the Peak Response of a 1/4-Scaled Steel Frame Building

Abstract

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.

Meeting Name

Structures Congress - Building on the Past: Securing the Future (2004: May 22-26, Nashville, TN)

Department(s)

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)

784407002

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2004 American Society of Civil Engineers (ASCE), All rights reserved.

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