基于Ansys Workbench的EPS转向柱优化设计

Optimal Design of EPS Steering Column Based on Ansys Workbench

为解决EPS转向柱扭转角求解困难,文章应用Ansys Workbench的复杂装配体分析功能,在一定工况下,对EPS转向柱的刚度进行了分析,精确地计算出其最大扭转角为0.854 12°,并与试验结果进行对比。针对变形和应力较大的部分重新建模,实现模型尺寸的参数化,并应用Design Xplorer(DX)模块对转向柱结构进行了优化设计,优化结果表明:转向柱的最大变形总量减少3.69 mm。对转向柱进行优化设计提供参考依据,实现了尺寸参数在Simulation和优化模块DX的传递,通过尺寸参数设计在Ansys DX中对轴的最大变形量计算,能够得到新的满足要求的尺寸。

To solve the difficulty of torsion angle solution of steering column on EPS, the stiffness of steering column on EPS in a certain condition is analyzed by using the complicated assembled part analyzing function of Ansys Workbench. It calculates accurately that the maximum torsion angle is 0.854 12° which then is compared with the experimental results. To the part of lager deformation and stress, 3D solid model is recreated and the model size is parameterized. The structure of steering column is optimized in Design Xplorer. The results show that the maximum total deformation is reduced by 3.69 mm. It provides a reference for optimal design of the steering column, and also achieves the size parameter transmission to Simulation and DX module. That the calculation about maximum deformation of the shaft carried out by size parameters design in Ansys DX, makes the size which meets the requirements available.