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采用传动CAE分析与MSC.Nastran相结合的技术对某商用车桥主减总成进行正向设计。在锥齿轮和轴承初步设计完成后,通过传动CAE分析软件建立主减总成分析模型并计算,调整锥齿轮和轴承的设计参数使其符合要求并最终定型,采用包络设计完成相关壳体件的三维建模。使用子结构法从MSC.Nastran中提取差壳、减壳和桥壳等壳体的刚度矩阵和节点位置信息,在传动CAE分析软件中建立整桥仿真分析模型并进行柔性分析,得到考虑差壳、减壳和桥壳等壳体实际刚度的锥齿轮安全系数,将分析得到的数据作为边界条件导入有限元模型中,得到满足强度和刚度要求下的最优设计。
Adopt the technology of transmission CAE analysis and MSC.Nastran to carry on the forward design of the main reduction assembly of a commercial axle. After the initial design of bevel gear and bearing is completed, the main reduction assembly analysis model is established by transmission CAE analysis software and calculated. The design parameters of bevel gear and bearing are adjusted to meet the requirements and finally finalized. The envelope design is used to complete the relevant shell components 3D modeling. The sub-structure method was used to extract the stiffness matrix and node location information of shell, shell and shell from MSC.Nastran. The whole bridge simulation analysis model was established in CAE analysis software and the flexibility analysis was performed. , Reducing shell and axle shell shell stiffness of the actual gear bevel gear safety factor, the analysis of the data as a boundary condition into the finite element model, to meet the strength and stiffness requirements of the optimal design.