Finite element analysis on stiffness of rubber-steel sphere bush

In this paper, nonlinear finite element method was used to analyze the mechanical behavior of a rubber-steel sphere bush subjected to axial tension, torsional and flexural large deformed load. The relationship between axial stiffness, torsional stiffness, flexural stiffness and deformation has been given. The results indicate that axial stiffness and flexural stiffness decrease as deformation increases, while torsional stiffness increases as deformation increases, but totally speaking, the difference is very small.