抄録
In this paper, a nonlinear mechanical model for laminated rubber bearings based on Haringx's theory is proposed. In the model, rubber sheets and steel plates constituting a laminated rubber bearing are modeled as rubber elements and steel elements separately, and the model of laminated rubber bearings is constructed interlaminating the two elements. The lateral force-deformation relationship of the rubber element is represented by the stiffness matrix derived from Haringx's theory. The model can express the nonlinear behavior of laminated rubber bearings in the large deformation range by applying nonlinear characteristics to the bending stiffness and shear stiffness of the rubber element, and address the effect of end rotations on the mechanical characteristics of laminated rubber bearings. To verify the accuracy of the model and the validity of the nonlinear characteristics introduced to the bending stiffness, simulation analysis of loading tests using scale models of laminated rubber bearings are carried out. From results of the analysis, it is confirmed that the model can predict the large deformation behavior of laminated rubber bearings.
