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.
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Part of the investigations were supported by the National Foundation “Scientific Research” (Bulgaria) under Grant TN-432. Part of them were supported by the Deutsche Forschungsgemeinschaft (DFG). The financial support of both institutions is gratefully acknowledged.
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Lippmann, H., Mannl, V., Bontcheva, N. et al. Numerical simulation of density distribution during compaction of iron powders. Arch. Appl. Mech. 67, 191–199 (1997). https://doi.org/10.1007/s004190050111
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DOI: https://doi.org/10.1007/s004190050111