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Study on Performance Characteristics of Reduced-Scale Lead Rubber Bearings with Three different Diameters of Lead Pluge

The characteristic tests for the reduced-scale lead rubber bearings are performed with three different diameters of lead plugs. The test frequencies are 0.05Hz and 0.5Hz of the sinusoidal waves. The roles of lead plugs in the behavior of lead rubber bearings are investigated. The shear-deformation characteristic values such as stiffness, damping and yield load values are increased according to the increase of the diameter of lead plugs. The high damping value can be obtained by increasing the diameter of lead plug.