Bending Stiffness of Fiber-Reinforced Circular Seismic Isolators
Publication: Journal of Engineering Mechanics
Volume 128, Issue 11
Abstract
The reinforcing elements of multilayer elastomeric isolation bearings, which are normally steel plates, are replaced by a fiber reinforcement. In contrast to the steel reinforcement which is assumed to be rigid, the fiber reinforcement is flexible in extension. This paper presents the theoretical approach to analyze the bending stiffness of the fiber-reinforced circular isolators. The elastomer is assumed to be incompressible and pressure dominant. The stiffness formula is derived. The influence of fiber flexibility on the mechanical properties of fiber-reinforced circular isolators under bending moment, such as the pressure in the elastomer, the stress in the reinforcement, and the bonding shear stress between the elstomer and the reinforcement, are presented.
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References
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Tsai, H.-C., and Kelly, J. M. (2001). “Stiffness analysis of fiber-reinforced elastomeric isolators.” PEER Rep. 2001/05, Pacific Earthquake Engineering Research Center, Univ. of California, Berkeley, Calif.
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Published In
Journal of Engineering Mechanics
Volume 128 • Issue 11 • November 2002
Pages: 1150 - 1157
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Aug 31, 2001
Accepted: Feb 8, 2002
Published online: Oct 15, 2002
Published in print: Nov 2002
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