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Seismic isolators
Elastomeric isolators  - FIP ARTICOLI TECNICI SRL

Description

The SI-series elastomeric isolators consist of alternate layers of steel and elastomer connected by curing. Their behaviour can be modelled as linear, based on equivalent stiffness and the equivalent viscous damping coefficient. Usually they are made of high-damping elastomeric mixtures, i.e. with equivalent viscous damping coefficient between 10 and 15% and shear deformation of 100% Experimental hysteretic cycles of a SI isolator at a 0.5 Hz frequency and shear deformation ± 100% Preparation, at FIP INDUSTRIALE laboratory, of an experimental test on two SI isolators of diameter 1150 mm. A SI isolator installed at the "Da Luz" hospital of Lisbon (Portugal).

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