(北京有色金属研究总院, 北京100088)
摘 要: 根据多晶金属板材塑性变形的晶体学理论, 由材 料织构定量分析(ODF)方法, 计算了金属板材的冲压制耳高度分布。考虑到单晶滑移变形 及屈服条件计算出了板坯的径向应变周边分布, 然后用取向分布函数(ODF)给予加权平均计算多晶金属板材的径向应变,进而计算板坯周边的平均应变及制耳高度。 对铝合金板材理论预测的结果表明制耳位置(45°制耳), 制耳个数(4个制耳)与制耳率( e =4.29)与实测的结果相吻合.
关键字: 制耳 织构 金属板材 ODF
(General Research Institute for Non-ferrous Metals, Beijing 100088, P. R.China)
Abstract:Earing in the cup drawing of sheet metals was calculated quantitatively by using a crystallographical theory of plastic deformation with measured texture data. The results showed that earing in the drawn cup can be predicted satisfactorily by the present method for a wide range of materials.
Key words: earing texture ODF