中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 12 No. 5 October 2002 |
die cavity in special-shaped extrusion
DU Feng-shan(杜鳳山)2, LIU Cai(劉才)2
（1. School of Mechanical and Electric Control Engineering,
Northern Jiaotong University, Beijing 100044, China;
2. School of Materials Science and Engineering, Yanshan University,
Qinhuangdao 066004, China）
Abstract:With the help of Complex Function Mapping studied results, the analysis function of Conformal Mapping is set up. Since the complicated three dimension's deformation problems are transferred into two dimension problems, both the stream function and strain ratio field are analyzed in the metal plastic deformation. Using the upper-bound principles, the theory of metal deformation and die cavity optimized modeling is established for random special-shaped product extrusion. As a result, this enables the realization of intelligent technique target in the die cavity of CAD/CAM integration.
Key words: special-shaped products; extrusion; die cavity; conformal mapping
