Multi-scale modeling and simulation of thermoplastic automated tape placement: Effects of metallic particles reinforcement on part consolidation
Article dans une revue avec comité de lecture
Auteur
LEÓN, Angel
111023 École Centrale de Nantes [ECN]
206040 Laboratoire Lorrain de Recherche en Informatique et ses Applications [LORIA]
111023 École Centrale de Nantes [ECN]
206040 Laboratoire Lorrain de Recherche en Informatique et ses Applications [LORIA]
Résumé
This paper concerns engineered composites integrating metallic particles to enhance thermal and electrical properties. However, these properties are strongly dependent on the forming process itself that determines the particle distribution and orientation. At the same time, the resulting enhanced thermal properties affect the reinforced resin viscosity whose flow is involved in the intimate contact evolution. Thus, a subtle and intricate coupling appears, and the process cannot be defined by ignoring it. In this paper, we analyze the effects of particle concentration and orientation on the process and processability. For this purpose, three main models are combined: (i) a multi-scale surface representation and its evolution, by using an appropriate numerical model; (ii) flow-induced orientation, and (iii) the impact of the orientation state on the homogenized thermal conductivity.
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