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http://dx.doi.org/10.7734/COSEIK.2012.25.6.533

Experimental Study on the Temperature Dependency of Full Scale Low Hardness Lead Rubber Bearing  

Park, Jin Young (R&D Center, UNISON eTech Co. Ltd.)
Jang, Kwang-Seok (R&D Center, UNISON eTech Co. Ltd.)
Lee, Hong-Pyo (Plant Const. & Eng. Lab., KHNP Central Research Institute)
Lee, Young Hak (Department of Architecture Engineering, Kyung-Hee University)
Kim, Heecheul (Department of Architecture Engineering, Kyung-Hee University)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.25, no.6, 2012 , pp. 533-540 More about this Journal
Abstract
Rubber laminated bearings with lead core are highly affected by changes in temperature because key materials which are rubber and lead have temperature dependencies. In this study, two full scale LRB(D800, S=5) are manufactured and temperature dependency tests on shear properties are accomplished. The shear properties at the 3rd cycle are used at $-10^{\circ}C$, $0^{\circ}C$, $10^{\circ}C$, $20^{\circ}C$, $30^{\circ}C$, $40^{\circ}C$ respectively. The double shear configuration, simultaneously testing two pieces, is applied for compression shear test in order to minimize the friction effects due to the test machine, described in ISO 22762-1:2010. Characteristic strength, post-yield stiffness, effective stiffness, equivalent damping ratio are estimated and presented coefficient due to the temperature changes.
Keywords
lead rubber bearing; temperature dependency; low hardness rubber; nuclear power plants;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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