Abstract
The response of equipment in resilient-friction base isolated structures subjected to harmonic and earthquake ground motion is investigated. Comprehensive parametric studies on the effect of isolator friction coefficient, subsystem (equipment, structure, isolator) natural period, subsystem damping, and the equipment/structure mass ratio on the equipment response are presented. The results are determined by an accurate and efficient semi-analytical procedure and include interaction effects between the equipment, structure, and base isolator. The study indicates that the resilient-friction base isolator is, in general, effective in reducing the accelerations in lightweight equipment components from the corresponding fixed base case.
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