A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Semiactive control of a steel frame with piezoelectric friction dampers
In this paper, a previously designed and fabricated friction damper with four piezoelectric actuators was installed on the first story of a ¼ scale, 3-story steel structure. The performance of the damper and a simple control strategy was 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 of the structure agreed well with the experimental results. The proposed control strategy can not only effectively reduce the structural responses but also adapt to the varying excitations from both weak and strong earthquakes. Experimental results also indicated that a piezoelectric friction damper slightly saturated could be advantageous to the seismic mitigation of buildings. Over saturation will, however, degrade the performance of the semi-active control strategy.
Semiactive control of a steel frame with piezoelectric friction dampers
In this paper, a previously designed and fabricated friction damper with four piezoelectric actuators was installed on the first story of a ¼ scale, 3-story steel structure. The performance of the damper and a simple control strategy was 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 of the structure agreed well with the experimental results. The proposed control strategy can not only effectively reduce the structural responses but also adapt to the varying excitations from both weak and strong earthquakes. Experimental results also indicated that a piezoelectric friction damper slightly saturated could be advantageous to the seismic mitigation of buildings. Over saturation will, however, degrade the performance of the semi-active control strategy.
Semiactive control of a steel frame with piezoelectric friction dampers
Chen, Genda (author) / Chen, Chaoqiang (author)
Smart Structures and Materials 2003: Smart Systems and Nondestructive Evaluation for Civil Infrastructures ; 2003 ; San Diego,California,United States
Proc. SPIE ; 5057
2003-08-18
Conference paper
Electronic Resource
English
Semiactive control of a steel frame with piezoelectric friction dampers [5057-26]
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