基于Dynaform的6016-T4P铝合金汽车机舱盖模面优化

Optimization on die face of engine compartment cover for 6016-T4P aluminum alloy based on Dynaform

以Dynaform 5. 9软件为平台,对某车型6016-T4P铝合金机舱盖外覆盖件进行全工序冲压成形数值模拟及模面结构参数优化。通过设计5因素4水平的正交试验,研究了凹模圆角半径、凸模圆角半径、拔模斜度、修边延长量、模面高度对机舱盖外覆盖件冲压成形的影响。在正交试验最优结构参数组合的基础上,结合模面补偿技术,研究了回弹量随补偿因子的变化趋势。模拟结果表明:拔模斜度对最大减薄率影响较大,凹模圆角半径对最大主应变影响较大,修边延长量对回弹量影响较大。当补偿因子取1. 0时,回弹补偿效果最好。经成形试验,得到了合格的产品,验证了模拟的正确性。

Based on software Dynaform 5. 9,the numerical simulation on the whole process of stamping and the optimization on the die face structure parameters for the engine compartment cover of 6016-T4P aluminum alloy were conducted. And the influences of die corner radius,punch corner radius,draft angle,trimming lengthening and die height on the stamping of engine compartment cover were studied by designing the orthogonal test with five factors and four levels. On the basis of the optimum structure parameter combination of orthogonal test,the variation trend of springback amount with the compensation factor was studied by the die face compensation technique. The simulation results show that the draft angle has a great influence on the maximum thinning rate,the die corner radius has a great influence on the maximum principal strain,and the trimming lengthening has a great influence on the springback amount. When the compensation factor is 1. 0,the effect of springback compensation is the best. After the forming test,a qualified product was obtained to verify the correctness of simulation.