Simulation of micro powder injection moulding: Powder segregation and yield stress effects during form filling

Autor:	Oxana Weber, Thomas Hanemann, Jan G. Korvink, Jürgen Haußelt, Michael Schulz, Richard Heldele, David Kauzlarić, Volker Piotter, Andreas Greiner
Rok vydání:	2011
Předmět:	Shear (sheet metal) Smoothed-particle hydrodynamics Materials science Rheology Flow (psychology) Materials Chemistry Ceramics and Composites Fluid dynamics Injection moulding Bending Composite material Powder injection
Zdroj:	Journal of the European Ceramic Society. 31:2525-2534
ISSN:	0955-2219
DOI:	10.1016/j.jeurceramsoc.2011.02.008
Popis:	We report on our development of a computational tool for the simulation of micro powder injection moulding (micro-PIM) based on a description of the fluid flow by the smoothed particle hydrodynamics (SPH) method. The feedstocks used in micro-PIM expose rather complicated rheological features. Insertion of appropriate material models is discussed, as, e.g. , the yield stress behaviour. Insight is gained into the moulding process through simulation of the injection into a bending specimen with an obstacle in the flow as an example. The effect of shear induced migration is shown to be reproduced and compared to the segregation phenomena arising in experimental findings.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c14e3546f9f5a07d0812f8722ddf1326 https://doi.org/10.1016/j.jeurceramsoc.2011.02.008 Zobrazit plný text záznamu Full Text from ScienceDirect