Parametric Analysis of Laminated Rubber Bearings with Frictional Sliding

The behavior of laminated rubber bearings with frictional sliding was studied by finite element method. The results showed that by using the coulomb friction model better reflect the sliding bearing energy dissipation effect, but it cannot consider the static and dynamic friction transition relationship of the initial slip to the slip state and the change of friction coefficient caused by heating or wear. Therefore, it cannot reflect the degradation of the strength before the initial loading and the hardening phenomenon under the large displacement. The energy dissipation of the bearings was independent of the applied vertical force, and increased with the shear deformation. With the increase of the rubber layer thickness, the equivalent viscous damping ratio and the horizontal equivalent stiffness will decrease. For the change of bearing width, the equivalent viscous damping ratio has little effect on the change trend. The influence of the thickness of the rubber layer and the width of the support on the change trend of the sliding characteristics were too indistinct to describe the variation trend and impact of the bearing sliding characteristics.