期刊
COMPUTATIONAL PARTICLE MECHANICS
卷 3, 期 4, 页码 437-448出版社
SPRINGER INT PUBL AG
DOI: 10.1007/s40571-015-0099-7
关键词
Discrete element method; DEM; Die filling; Complex powder; Time-dependent cohesion; Load history; Cohesive powder
资金
- Federal Ministry of Economics and Technology(BMWi) via the German Federation of Industrial Research Associations Otto von Guericke e.V. (AiF) [430 ZBG]
- IPROCOM Marie Curie initial training network
- People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme FP7/ under REA Grant [316555]
- EU FP7 Project SimPhoNy [604005]
Die filling is an important part of the powder handling process chain that greatly influences the characteristic structure and properties of the final part. Predictive modelling and simulation of the die-filling process can greatly contribute to the optimization of the part and the whole production procedure, e.g. by predicting the resulting powder compaction structure as a function of filling process parameters. The rheology of powders can be very difficult to model especially if heterogeneous agglomeration or time-dependent consolidation effects occur. We present a new discrete element contact force model that enables modelling complex powder flow characteristics including direct time-ependent consolidation effects and load history-dependent cohesion to describe the filling process of complex, difficult to handle powders. The model is demonstrated for simple flow and an industrial powder flow.
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