State of the art review - Comparison of computer models representing powder compaction process

Citation
L. Federzoni et al., State of the art review - Comparison of computer models representing powder compaction process, POWD METALL, 42(4), 1999, pp. 301-311
Citations number
22
Language
INGLESE
art.tipo
Review
Categorie Soggetti
Metallurgy
Journal title
POWDER METALLURGY
ISSN journal
0032-5899 → ACNP
Volume
42
Issue
4
Year of publication
1999
Pages
301 - 311
Database
ISI
SICI code
0032-5899(1999)42:4<301:SOTAR->2.0.ZU;2-O
Abstract
This paper presents a benchmark study on the use of simulation models to re present the powder compaction process. A two level part that represents a s ynchroniser hub is used as detailed experimental information for this part is documented in the literature. The models used incorporate different repr esentations of friction and material yielding behaviour together with diffe rent fill densities. The study shows that computer modelling is capable of predicting density distributions and tool set force levels for the powder c ompaction process. It has highlighted the sensitivity of the output with re spect to friction, fill density, and material yield models. It has also sho wn that models that incorporate material behaviour using different material models yield surprisingly reasonable results. Based on best performance, i t is now possible to predict density to within 0.05 g cm(-3) and tool set f orce within 10% for an iron powder. The computational requirements indicate a simulation time of typically 1 h for a two level component. This makes s imulation a practical tool for this industry sector. PM/850.