Numerical simulation of density distribution during compaction of iron powders |
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| Authors: | H Lippmann V Mannl N Bontcheva R lankov O Beer |
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| Institution: | 1. Lehrstuhl A für Mechanik, Technische Universit?t München, Arcisstr. 21, D-80333, München, Germany
2. Institute of Mechanics, Bulgarian Academy of Sciences, Acad. G. Bontchev Str., Bl. 4, BG-1113, Sofia, Bulgaria
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| Abstract: | Summary The compaction process of iron powder is considered. Due to negligible elastic strains the rigid-plastic model is applied.
A yield condition containing the first stress invariant is used. All material functions depend on the relative density of
the powder, which changes during the compaction process. Siebel friction law is applied, and the friction factor is considered
to be depending on the relative density. Various material functions are applied in the numerical simulation, and the results
are compared with experimentally obtained data. The best fitting material functions and friction factors are obtained.
Accepted for publication 18 July 1996 |
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| Keywords: | powder metals compaction friction FE method |
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