钢制汽车轮轮缘缩口成形有限元分析

为了保证轮缘的成形质量，提高生产效率，通过分析轮缘的成形工艺，采用有限元数值模拟与试验相结合的方法，建立了缩口成形和终成形的有限元模型，分析了模具结构、成形速度和摩擦因数对缩I：2件周向应力、应变分布情况的影响。模拟结果表明，采用内外支撑缩口模时，缩口件的周向应力应变值较大；随着成形速度的增加，周向应力应变先增加后减小；随着摩擦因数的增加，周向应变和应变的波动性随之增大。试验结果表明，有限元数值模拟发挥了较好的指导作用。

FEA on automobile steel wheel flange in necking forming

In order to guarantee the quality of the flange and improve the production efficiency, by analyzing the forming technology of the flange and using the methods of combining finite element numerical simulation and experiment,the necking and final forming finite element model was established and the effects of the mould structure,deformation speed and friction factors on the distribution of the shear stress and shear strain were analyzed. The simulation results showed that the value of the tangential stress and tangential strain value were larger under the function of the internal and external supports mould. With the increase of deformation speed,tangential stress and tangential strains increased first,then decreased.With the increase of friction coefficient,the undulatory property of tangential strain and the tangential strain was growing.The experimental results show that finite element model acts an important role of guiding.