Scientific conference in universities or research centers (Scientific conferences in universities or research centers)
Re-meshing algorithms applied to Resin Transfer Moulding simulations.
Béchet, Eric; Ruiz, Éduardo; Trochu, François et al.
2001
 

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Keywords :
Finite element simulation; Linear systems; Mesh generation; re-meshing algorithm; Resin Transfer Moulding simulations
Abstract :
[en] Today, there are many finite element simulation software on the market. The main issue when developing a new application of the finite element method is not solving the linear systems that arise from the numerical approximation, but it is rather to construct the mesh and adapt it to the problem. Mesh generation, in the sense of modelling the geometry constraints, still remains a big problem. In this communication, however, we will not deal with initial mesh generation, but rather about mesh modifications applied to a time evolving problem, namely a mould filling simulation. In injection moulding processes, in particular in resin transfer moulding, the simulations are usually preformed with a fixed mesh at each time step. During the displacement of the resin flow, there are phenomena that occur at the front, such as heat transfer. In order to catch them accurately, it is necessary to follow the front flow with the mesh. This implies to implement a re-meshing algorithm. By using this technique, it will be possible to obtain much better results in less time, compared to fixed mesh strategy. The mesh will need to be anisotropic in the vicinity of the front. The size of the mesh along the front is related to the overall accuracy needed for the simulation. The size of the mesh in the perpendicular direction is related to the time accuracy, as the front is moving forward. Those sizes are not related, thus the need for anisotropic mesh procedures is crucial. The mesh will be evolving in the time. For that purpose, we will keep a background isotropic mesh used as starting point for the refinement at every time step. Then, it will be refined anisotropically. The physical field of solution needs to be projected on the new mesh, each time a re-meshing occur. Finally, some validation is needed, first with the standard simulation procedure (without remeshing), then with experimental data.
Disciplines :
Mathematics
Materials science & engineering
Mechanical engineering
Computer science
Author, co-author :
Béchet, Eric ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Conception géométrique assistée par ordinateur
Ruiz, Éduardo;  Centre de Recherches Appliquées Sur les Polymères (CRASP), Département de Génie Mécanique, École Polytechnique de Montréal, H3C 3A7, Canada
Trochu, François;  Centre de Recherches Appliquées Sur les Polymères (CRASP), Département de Génie Mécanique, École Polytechnique de Montréal, H3C 3A7, Canada
Cuillière, Jean-Christophe;  Laboratoire de productique, Département de Génie Mécanique, Université du Québec à Trois-Rivières, G9A 5H7, Canada
Language :
English
Title :
Re-meshing algorithms applied to Resin Transfer Moulding simulations.
Publication date :
August 2001
Event name :
3rd Canadian International Composite Conference
Event place :
Montréal, QC, Canada
Event date :
Aug. 21-24 2001
Audience :
International
Available on ORBi :
since 21 January 2010

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