对于结构非对称的框梁类复杂结构件的成形,提出了按照计算毛坯截面图和分模面轮廓进行坯料初步设计,以及分别评价型腔填充性能、应变均匀性和缺陷产生趋势的评价方法。并用所提出的方法对TA15钛合金承力框进行了坯料设计优化和试验验证。结果表明,所提出的方法能够有效地反映不同坯料对锻件成形过程的影响,获得了理想的成形效果。 For the forming of frame-like complex structures with asymmetric structure, a preliminary design of the blank according to the calculation of the blank section and the profile of the parting plane is proposed. The evaluation methods of cavity filling performance, strain uniformity and the tendency of defects are proposed respectively. And the proposed method was used to optimize the design and test of the blank of TA15 titanium alloy. The results show that the proposed method can effectively reflect the influence of different billets on the forging process and obtain the ideal forming effect.