Seismic Effectiveness of Piezoelectric Friction Fampers for Peak Response Reduction of Building Structures

Abstract

The performance of a piezoelectric friction damper (PFD) and a semi-active control algorithm was evaluated with 1/4-scale, 3-story building model that was subjected to four earthquake ground motions of various intensities. For shake table tests, the damper was installed between the first floor of the building and the shake table. Both numerical and experimental results indicated that the proposed control strategy cann effectively suppress the structural vibration equally under weak and strong earthquakes. It was found that a semi-active PFD with slight saturation is beneficial to the mitigation of building responses while significant saturation tends to degrade the performance of the control strategy. Further improvement in force generation efficiency of the PFD would likely make it competitive with other representative semiactive control devices.

Meeting Name

13th World Conference on Earthquake Engineering Conference Proceedings

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

Earthquake Dampers; Piezoelectricity; Seismic Phenomena; Structural Vibration

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Publication Date

01 Aug 2004

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