7LUO Yajun,HE Dannong,YANG Jianhua,ZHANG Yongqing,ZHANG Wei,LI Jun 1. National Die & Mold CAD Engineering Research Center, Shanghai Jiao Tong University, Shanghai 200030, China,2. Shanghai Volkswagen Automotive Co., Ltd. Shanghai 201805, China.Research on friction law in deep drawing process of rectangular parts[J].Science China Mathematics,2001,44(S1):230-234.
