摘要
为了研究不封底零件模具补偿面结构形式在超塑成型中对工件厚度分布的影响,以TC4钛合金负角度法兰盘零件为研究对象,采用MSC.Marc有限元数值模拟技术分析了不同模具型面结构对零件壁厚分布的影响。结果表明：法兰补偿面采用圆弧过渡比采用垂直过渡能获得更好的壁厚分布,实际零件的最小壁厚为0.68 mm,整体壁厚在0.68~1.42 mm之间;利用黄金分割法获得的最佳补偿高度为29.42 mm,对应的零件最小壁厚为0.845 mm。
In order to study the influence of the structure form of the no-cover part die compensation surface on the thickness distribution of work-piece in superplastic forming, based on TC4 negative angle complex parts, the influence of different die surface structure on thickness distribution was analyzed with MSC.MARC. The results show that it can get a better wall thickness distribution through arc transition than compensated vertical transition at the flange surface, the minimum wall thickness of the actual parts is 0.68 mm, and the overall wall thickness is between 0.68 and 1.42 mm. The best compensation height which is 29.42 mm is obtained using golden section method, than the minimum wall thickness is obtained which is 0.845 mm.
出处
《电子工艺技术》
2015年第4期238-241,共4页
Electronics Process Technology
