Stress Analysis in a Flexible Slider of a Friction Pendulum with Variable Curvature

摘要

Implementation of friction pendulums having the sliding surface profile based on a polynomial function of superior order implies development of flexible sliders, able to maintain permanently the contact to the sliding surface with variable curvature. The paper present some types of sliding surfaces belonging to the concave plate of a seismic isolation system, which permit a greater flexibility in controlling the oscillations of the isolated structure, together with an innovative slider, designed to fulfill all new demands specific to this surfaces. The FEM analysis highlights the capability of the slider to perform with high reliability level under static loads due isolated structure and dynamic loads produced by earthquakes.