Mechanical behaviour of rubber bearings with low shape factor

This study investigates the mechanical behaviour of elastomeric bearings with a low shape factor (LSF). Such can offer an effective solution for three-dimensional seismic isolation structures, that is, in vertical as well horizontal directions. They could also be employed developing low-cost systems countries due to their reduced weight and manufacturing cost. The first part describes tests carried out at Tun Abdul Razak Research Centre (TARRC) on low-damping rubber double-shear test pieces LSF bearings. material are used inform development finite element (FE) model bearings, which is validated against bearing results. It shown proposed FE describe accurately global non-linear force-displacement compressed while providing insight into local distribution stresses strains. investigate response under boundary conditions differ from one considered tests. second illustrates numerical simulations shaking table University Naples Federico II structural prototype mounted Useful insights provided effect flexibility attainment critical zero tangent stiffness displacements.