Smart property of homogeneous electrorheological fluid and its application in reducing seismic responses of engineering structures

Qu Wei-lian; Guan Jian-guo; Ma Hui-ru; Yuan Run-zhang; Tu Jian-wei; Chen Bo

doi:10.1007/BF02838545

Journal of Wuhan University of Technology Materials Science Edition ›› 2002, Vol. 17 ›› Issue (3) : 70 -74. DOI: 10.1007/BF02838545

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Smart property of homogeneous electrorheological fluid and its application in reducing seismic responses of engineering structures

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Abstract

The smart properties of homogeneous electrorheological fluid (HERF) containing side—chain type liquid crystalline polymer were studied and an actual HERF damper with an adjustable viscosity was produced. A mechanical model of the HERF smart damper was established on the basis of experiment and theoretical analysis. Then a controlled equation of SDOF structure by HERF damper was derived and a semi-active control strategy based on optimal sliding displacement of damper was presented. The simulation results for a single story frame structure indicate that HERF, which may avoid some defects of common particles-suspended ER fluids, is an excellent smart material with better stability. Using the semi-active control strategy presented, HERF smart damper controlled could effectively reduce seismic responses of structures and keeps the control stable at all times.

Keywords

smart materials / homogeneous electrorheological fluid / intelligent structure

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Qu Wei-lian, Guan Jian-guo, Ma Hui-ru, Yuan Run-zhang, Tu Jian-wei, Chen Bo. Smart property of homogeneous electrorheological fluid and its application in reducing seismic responses of engineering structures. Journal of Wuhan University of Technology Materials Science Edition, 2002, 17(3): 70-74 DOI:10.1007/BF02838545

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References

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