基于CAE技术的汽车铝板发动机盖刚度研究

随着汽车产业的发展,轻量化在汽车制造领域占据越来越重要的地位。相较于钢板来说,铝板的塑性低、易回弹,在汽车扣合件的外板中经常存在刚度不足的问题。以铝板发动机盖外板为研究对象,采用有限元法对成形过程中的各工艺参数进行优化,再通过实验验证,较好解决了铝板成形过程刚度不足的问题。

Research on Aluminum Vehicle Hood Outer Insufficient Stiffness Issue Based on Finite Element Simulation

With the development of automobile industry,lightweight plays an increasingly important role in the field of automobile manufacturing.Aluminum sheet metal is widely used in automobile industry owing to its high strength,corrosion resistance,good elasticity,excellent impact resistance,easy processing,light weight and high regeneration.Compared with steel plate,however,aluminum plate suffers low plasticity and easily springing-back,which leads to the problems of insufficient stiffness issue in the skin panel of automobile closure parts.Taking hood outer as an example,finite element method was applied to optimize the principal parameters in the forming process.Through the experimental verification,the problem of aluminum hood outer insufficient stiffness issue was sovled.Therefore,the achievemnet has certain reference value for stamping engineering practical application.