An Experimental Study on the Seismic Response of Base-Isolated Secondary Systems

[+] Author and Article Information
Hany Khechfe

Ratomag Corporation, Mirghany, Heliopolis, Cairo, Egypt

Mohammad Noori

Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695 e-mail: mohammad_noori@ncsu.edu

Zhikun Hou

Department of Mechanical Engineering, Worcester Polytechnic Institute, Worcester, MA 01609

James M. Kelly

Department of Civil Engineering, University of California, Berkeley, CA 94804

Goodarz Ahmadi

Department of Mechanical and Aerospace Engineering, Clarkson University, Potsdam, NY 13766

J. Pressure Vessel Technol 124(1), 81-88 (Nov 29, 2001) (8 pages) doi:10.1115/1.1445795 History: Received May 18, 2001; Revised November 29, 2001
Copyright © 2002 by ASME
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Mathematical models of base isolation systems
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Parameters of the isolated secondary system
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Mode shapes of the 2-DOE system
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Base isolated secondary system
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Schematic of the primary and secondary systems
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(a) Effect of base isolation on displacement and acceleration response histories of secondary system. (b) FFT of Secondary System Displacement in changing spring stiffness.
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(a) FFT of secondary system acceleration with changing base isolator mass. (b) FFT of secondary system displacement with changing base isolator mass.
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(a) Frequency response of secondary system acceleration in changing spring stiffness. (b) FFT of secondary system displacement in changing damping stiffness.



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