基于正交试验的A6063内高压成形加载路径优化研究

Internal hydroforming process optimization of A6063 based on orthogonal test

为获取航空部件T形管的更高成形质量,对铝合金A6063内高压成形加载路径进行优化研究。以壁厚均匀一致性和最小壁厚为目标函数,内高压、轴向进给、平衡冲头位移为设计变量,设计正交试验。运用Dynaform和LS-DYNA进行数值仿真分析,实验验证该分析的有效性和准确性。结果显示,最佳加载路径与初始路径相比,壁厚均匀一致性提高39.73%,最小壁厚增加192%。

In order to obtain the higher forming quality of the T-shaped tube of aviation component, the internal hydroformingprocess of A6063 was optimized. The wall thickness uniformity and the minimum wall thickness were the objective function. Theorthogonal test was designed with the internal high pressure, axial feed and the displacement of balance punch as the designvariables. Dynaform and LS- DYNA were used for numerical simulation analysis, and the effectiveness and accuracy of theanalysis were verified by experiment. The results show that compared with the initial path, the wall thickness uniformity of theoptimal loading path increases by 39.73% and the minimum wall thickness increases by 192%.