Simulation of die wall friction＇s effect on density distribution in metallic powder compaction

来源期刊：中国有色金属学报(英文版)2002年第5期

论文作者：周照耀 赵伟斌 陈普庆 陈维平 邵明 王郡文

文章页码：890 - 893

Key words：powder compaction; friction; computer simulation; finite element method

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.

基金信息：the National Natural Science Foundation of China