文档介绍：第 46 卷第 1 期 2021 年 1 月
V order to ensure the accuracy and reliability of numerical simulation，
the testing experiment of material performance was carried out， and the material properties of each forming pass and different heat treat-
ment states during the multi-pass forming process of skin were ， the influence laws of stretch forming process parameters，
including stretch amount of each pass， upper die pressure and clamping spacing on die fitting and springback were studied by numerical
results show that when the clamping spacing is 7 mm， the thickness of formed part is basically uniform in most area， and
when the upper die pressure is 200 -1000 kN， the increasing of pressure effectively improves the die fitting on these， the
optimum stretch forming process was put at the problem of large springback caused by the large thickness of skin part， the
process optimization alone did not fully meet the requirements of the die fitting degree， and the die profile compensation was
results show that the process can be used to produce parts that meet the quality requirements of the skin components and can reduce the
forming passes， reduce the processing cost and improve the production efficiency.