4LIU Xin, XV Yong-chao, YUAN Shi-jian, et al. Hydro- forming of aluminum alloy complex-shaped components [J]. Transactions of Nonferrous Metals Society of Chi- na, 2011,21 (Z2) : s417-s422.
6MENG Bao, WAN Min, WU Xiang-dong, et al. Develop- ment of sheet metal active-pressurized hydrodynamic deep drawing system and its applications [J]. International Journal of Meelmnieal Sciences, 2014,79 (2) : 143-151.
7ENDELT B, TOMMERUO S, DANCKERT J. A novel feed- back control system - Controlling the material flow in deep drawing using distributed blank-holder force [J]. Journal of Materials Processing Technology, 2013, 213 ( 1 ) : 36- 50.
8MODI B, KUMAR D R. Development of a hydroforming set- up for deep drawing of square cups with variable blank holding force technique [J]. The International Journal of Advanced Manufacturing Technology, 2013,66 (5- 8) : 1159-1169.