Analysis and Research on Rubber Joint of the Axle Box Rotary Arm of CRH3 EMU

Abstract

Abstract In order to study the stiffness performance of rubber joint of axle box rotary arm for EMU, the rubber joint of axle box rotary arm for CRH3 EMU was studied by combining finite element analysis with experiment. The structural composition of rubber joint of axle box rotating arm and several strain energy functions of rubber hyperelastic materials are described. The material constants of Mooney-Rivlin and Ogden models are obtained by curve fitting of rubber material test data. The radial stiffness and the axial stiffness of the rubber joint of the axle box rotating arm are calculated by using the finite element simulation software, and the experimental verification is carried out at the same time. It is found that the results of Mooney-Rivlin and Ogden models are similar in the case of small deformation, and Ogden model is more accurate in the case of large deformation.