Vertical Stiffness and Deformation Analysis Models of Rubber Isolators in Compression and Compression-Shear States
Publication: Journal of Engineering Mechanics
Volume 135, Issue 9
Abstract
The vertical stiffness and deformation theories of rubber isolators in compression and compression-shear states are systemically researched in the paper, a series of basic concepts, such as origin compression stiffness, origin compression longitudinal elastic modulus, offset vertical stiffness, etc. are suggested with corresponding theoretical formula and experimental estimation method. Based on the basic concepts and newly suggested calculating theories, the deformation calculating theory related to pure compression state and compression-shear state of isolating bearing is established. The vertical stiffness, offset vertical stiffness and deformation tests are performed with nature rubber bearings and lead plug rubber bearings total 16 original specimens to verify the new concepts and computation model of rubber isolators. All test results show that the theories established in the paper are suitable for analyzing the vertical stiffness and deformation of rubber isolators.
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Acknowledgments
This work was supported in part by National Nature Science Foundation of China (Grant No. UNSPECIFIED50578045) and Science and Technology Commission of Guangdong (Grant No. UNSPECIFIED2006B37201002). Their support is gratefully acknowledged by the writers.
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© 2009 ASCE.
History
Received: Feb 20, 2008
Accepted: Nov 17, 2008
Published online: Aug 14, 2009
Published in print: Sep 2009
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