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 |
density distribution in metallic powder compaction
CHEN Pu-qing（陳普慶）,CHEN Wei-ping(陳維平),
SHAO Ming（邵 明）, WANG Jun-wen(王郡文)
（College of Mechanical Engineering, South China University of Technology,
Guangzhou 510640, China）
Abstract:A computer simulation procedure for metal powder die compaction was described. Friction behavior of metal powder during cold compaction was simulated by the finite element method. The movement of powder relative to the die wall was taken into consideration by utilizing the shear friction model. Friction between the powder and the rigid die wall leads to inhomogeneous density distribution during the compaction process. The floating die technique and double punch pressing can attain more homogenous compacts than the fixed die technique can do. The results obtained from numerical analysis agree well with the experimental results. Simulation model was built in MSC.Mentat, and MSC.Marc software was used to calculate the powder compaction process.
Key words: powder compaction; friction; computer simulation; finite element method
