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Dimensionless quantities in discrete element method: powder model parameterization for additive manufacturing

  • Powder bed-based additive manufacturing processes offer an extended freedom in design and enable the processing of metals, ceramics, and polymers with a high level of relative density. The latter is a prevalent measure of process and component quality, which depends on various input variables. A key point in this context is the condition of powder beds. To enhance comprehension of their particle-level formation and facilitate process optimization, simulations based on the Discrete Element Method are increasingly employed in research. To generate qualitatively as well as quantitatively reliable simulation results, an adaptation of the contact model parameterization is necessary. However, current adaptation methods often require the implementation of models that significantly increase computational effort, therefore limiting their applicability. To counteract this obstacle, a sophisticated formula-based adaptation and evaluation method is presented in this research. Additionally, the developed method enables accelerated parameter determination with limited experimental effort. Thus, it represents an integrative component, which supports further research efforts based on the Discrete Element Method by significantly reducing the parameterization effort. The universal nature of deducting this method also allows its adaptation to similar parameterization problems and its implementation in other fields of research.

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Author:Simon GirnthORCiD, Tim HeitkampORCiD, Christian WackerORCiD, Nils Waldt, Günter KlawitterGND, Klaus DröderORCiD
DOI original:https://doi.org/10.1007/s40964-023-00543-3
Parent Title (English):Progress in Additive Manufacturing
Document Type:Article
Year of Completion:2024
Publishing Institution:Hochschule Hannover
Release Date:2024/02/26
Tag:Additive manufacturing; DEM; Dimensionless numbers; Discrete element method; Pi-theorem; Powder bed
GND Keyword:Fertigungstechnik; Selektives Laserschmelzen; Rapid Prototyping <Fertigung>; Diskrete-Elemente-Methode
Page Number:17
Institutes:Fakultät II - Maschinenbau und Bioverfahrenstechnik
DDC classes:670 Industrielle und handwerkliche Fertigung
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International