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  4. A new DEM contact-model for simulating die filling for powders with complex rheology
 
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2016
Conference Paper
Title

A new DEM contact-model for simulating die filling for powders with complex rheology

Abstract
Die filling as the first step in the process chain of die compaction can already introduce various kinds of flaws like undesired density variations, which are difficult to repair later on. Predictive modelling of the complete die filling process including effects of powder handling history on rheology can assist in the optimization process to avoid such effects. However, the rheology of powders can be very difficult to model especially if heterogeneous agglomeration or time dependent consolidation effects occur as could be the case for powders containing organic binders. In this paper, we present a new discrete-element contact-force model that enables modelling complex powder flow characteristics including direct time dependent consolidation effects and load history-dependent cohesion to describe the filling process of complex, difficult to handle powders.
Author(s)
Hashibon, A.
Fraunhofer-Institut für Werkstoffmechanik IWM  
Breinlinger, T.
Fraunhofer-Institut für Werkstoffmechanik IWM  
Schubert, R.
Fraunhofer-Institut für Werkstoffmechanik IWM  
Kraft, T.
Fraunhofer-Institut für Werkstoffmechanik IWM  
Mainwork
World PM 2016 Congress & Exhibition. USB Proceedings  
Project(s)
IPROCOM  
SymPhoNy
Simulation framework for multi-scale phenomena in micro- and nanosystems  
Funder
European Commission EC  
European Commission EC  
Bundesministerium für Wirtschaft und Technolgie BMWi (Deutschland)  
Conference
Powder Metallurgy World Congress & Exhibition (PM) 2016  
Language
English
Fraunhofer-Institut für Werkstoffmechanik IWM  
Keyword(s)
  • DEM

  • simulation

  • powder

  • complex rheology

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