Analytical Modeling of the Thermo-Mechanical Behavior of a Friction-Pendulum Seismic Isolator

摘要

The contribution outlines the modeling of the theimo-mechanical behavior of a curved surface slider employed as a device for passive seismic isolation of buildings and structures.The Lagrange formalism is employed to derive the equation of motion of the slider on the spherical surface of the lower sliding pad.Besides the equations of motion,accurate modeling requires the formulation of the response of the friction interface.Previous studies have shown the dependence of the friction coefficient on the sliding velocity.Reportedly,the rise in temperature during sliding also affects the magnitude of the friction coefficient.The model is being developed in order to be further integrated into a finite element model of a base-isolated structure.