Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Numerical simulation of die compaction and sintering

: Kraft, T.; Riedel, H.


Powder Metallurgy 45 (2002), Nr.3, S.227-232
ISSN: 0032-5899
ISSN: 1743-2901
Fraunhofer IWM ()
die compaction; sintering; user defined routine; general purpose finite element program ABAQUS; density distribution; shape distortion; computational optimisation; individual production step; die pressing; numerical simulation; dimensional accuracy; punch contact; tool wear

A method to simulate die compaction and sintering is presented. By implementing user defined routines for both processes into the general purpose finite element program ABAQUS quantitative predictions of density distributions and shape distortions can be obtained as well as the stresses in the tool components. By computational optimisation of the individual production steps suggestions can be made to improve the final properties. As an example for both die pressing and sintering a complex three-dimensional part is simulated and suggestions to improve dimensional accuracy are made. Finally, stresses in the tools are calculated showing that the deflections are large enough to cause punch to punch contact so that tool wear must be expected.