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Finite Element Analysis of Lead Rubber Bearing by Using Strain Energy Function of Hyper-Elastic Material
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 Title & Authors
Finite Element Analysis of Lead Rubber Bearing by Using Strain Energy Function of Hyper-Elastic Material
Cho, Sung Gook; Park, Woong Ki; Yun, Sung Min;
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 Abstract
The material property of the rubber has been studied in order to improve the reliability of the finite element model of a lead rubber bearing (LRB) which is a typical base isolator. Rubber exhibits elastic behaviour even within the large strain range, unlike the general structural material, and has a hyper-elastic characteristics that shows non-linear relationship between load and deformation. This study represents the mechanical characteristics of the rubber by strain energy function in order to develop a finite element (FE) model of LRB. For the study, several strain energy functions were selected and mechanical properties of the rubber were estimated with the energy functions. A finite element model of LRB has been developed by using material properties of rubber and lead which were identified by stress tests. This study estimated the horizontal and vertical force-displacement relationship with the FE model. The adequacy of the FE model was validated by comparing the analytical results with the experimental data.
 Keywords
Isolation bearing;Lead Rubber Bearing (LRB);Hyper-elastic;Strain energy function;Finite element model;
 Language
Korean
 Cited by
1.
Application of Mid-story Isolation System for Seismic Response Reducing of Dome Structure, Journal of the Korean Association for Spatial Structures, 2016, 16, 4, 37  crossref(new windwow)
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