Electrorheological fluid damper for seismic protection of structures

Nicos Makris; Davide Hill; Scott Burton; Mabel Jordan

doi:10.1117/12.208256

8 May 1995 Electrorheological fluid damper for seismic protection of structures

Nicos Makris, Davide Hill, Scott Burton, Mabel Jordan

Proceedings Volume 2443, Smart Structures and Materials 1995: Smart Structures and Integrated Systems; (1995) https://doi.org/10.1117/12.208256
Event: Smart Structures and Materials '95, 1995, San Diego, CA, United States

Abstract

An electrorheological (ER) fluid damper suitable for vibration and seismic protection of civil structures has been designed, constructed and is under testing. The damper consist of an outer cylinder and a piston rod that pushes the ER-fluid through a stationary annular duct. The design of the damper was based on approximate calculations based on the Hagen-Poiseille flow theory. It is found that the Hagen-Poiseille theory predicts satisfactorily the damper response at moderate values of the flow rate. Experimental results on the damper response with and without the presence of electric field are presented. The average fluid velocity in the ER-duct has to be kept relatively small so that viscous stresses do not dominate over `yield' stresses.

Citation Download Citation

Nicos Makris, Davide Hill, Scott Burton, and Mabel Jordan "Electrorheological fluid damper for seismic protection of structures", Proc. SPIE 2443, Smart Structures and Materials 1995: Smart Structures and Integrated Systems, (8 May 1995); https://doi.org/10.1117/12.208256

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