轴箱定位节点有限元分析及试验研究
Finite element analysis and test study of the axle box positioning joint

摘要 以国内某一高速动车组转向架用轴箱定位节点为研究对象，基于橡胶材料试样的单轴拉伸、双轴拉伸、平面剪切等试验数据拟合出材料模型常数，分别选取Mooney-Rivlin与Ogden橡胶材料本构模型进行有限元计算；基于有限元分析软件Abaqus对轴箱定位节点的径向刚度及轴向刚度进行仿真计算，并通过试验的方式论证有限元计算结果的准确性.根据有限元计算的结果与试验结果的对比得到：对于径向刚度，由于变形较小，通过Mooney-Rivlin与Ogden模型计算得到的结果与试验值均较接近，误差在3%左右；对于轴向刚度，变形稍大，通过Ogden模型计算得到的结果与试验值更加接近.
Abstract：Taking the axle box positioning joint of a high-speed EMU bogie as the research object, the material model constant is fitted based on the test data of uniaxial tension, biaxial tension and plane shear of rubber material samples, and the Mooney-Rivlin and Ogden rubber material constitutive models are selected for finite element simulation respectively. Based on the finite element analysis software Abaqus, the radial stiffness and axial stiffness of the axle box positioningjoint are simulated and calculated, and the accuracy of the finite element calculation results is demonstrated by the test. According to the comparison between finite element calculation and experimental results, we get the result: for radial stiffness, because of small deformation,the error between the calculated results by Mooney-Rivlin and Ogden model is about 3% compared with the experimental values, and for axial stiffness, the deformation is slightly larger, and the calculated results by Ogden model are more in the same with the experimental values.