Sharp edge filleting of enriched FE meshes

Ruding Lou (1) , Jean-Philippe Pernot (1) , Franca Giannini (2) , Alexei Mikchevitech (3) , Philippe Véron (1) , Bianca Falcidieno (4) , Raphaël Marc (3)

1 LSIS - Laboratoire des Sciences de l'Information et des Systèmes
2 IMATI-CNR - Istituto di Matematica Applicata e Tecnologie Informatiche
3 EDF - EDF
4 Istituto per la Matematica Applicata e Tecnologie Informatiche di Genova

Nowadays, the use of Computer-Aided Engineering (CAE) system in product design has become mainstream. However, the adopted process from Computer-Aided Design (CAD) product definition to numerical simulation could be further improved to avoid going backward to the CAD model for model modification. To this aim, we propose a generic mesh modification operator whose architecture is detailed in this paper. A new instance of this operator for filleting FE tetrahedral meshes is also proposed. The filleting operator works in two main steps. The external skin of the tetrahedral mesh is first deformed to round user-specified sharp edges. Then, in the filleting area, the positions of the inner nodes are relaxed to improve the aspect ratio of the mesh elements. Several examples illustrate the interest of such a CAD-less approach.

Mots clés: FE analysis; sharp edge; fillet; CAD-less; tetrahedral mesh; FE mesh modification

Domaines: Ingénierie assistée par ordinateur

Ruding Lou, Jean-Philippe Pernot, Franca Giannini, Alexei Mikchevitech, Philippe Véron, et al.. Sharp edge filleting of enriched FE meshes. Tools and Methods for Competitive Engineering - TMCE'12, May 2012, Karlsruhe, Germany. pp.NA. ⟨hal-01172010⟩