대한기계학회:학술대회논문집 (Proceedings of the KSME Conference)
- 대한기계학회 2000년도 춘계학술대회논문집A
- /
- Pages.393-398
- /
- 2000
냉간압축하에서 혼합 금속분말의 치밀화 거동에 관한 유한요소해석
A Finite Element Analysis for Densification Behavior of Mixed Metal Powder under Cold Compaction
- 발행 : 2000.04.20
초록
Densification behavior of mixed copper and tool steel powder under cold compaction was investigated. By mixing the yield functions originally proposed by Fleck-Gurson for pure powder, a new mixed yield functions In terms of volume fractions and contact numbers of Cu powder were employed in the constitutive models. The constitutive equations were implemented into a finite element program (ABAQUS) to compare with experimental data. and with calculated results from the model of Kim et at. for densification of mixed powder under cold isostatic pressing and cold die compaction. Finite element calculations by using the yield functions mixed by contact numbers of Cu powder agreed better with experimental data than those by volume fractions of Cu powder.
키워드