3D tetrahedral, unstructured and anisotropic mesh generation with adaptation to natural and multidomain metric

Cyril Gruau (1) , Thierry Coupez (1)

1 CEMEF - Centre de Mise en Forme des Matériaux

In this paper we present a 3D tetrahedral, unstructured and anisotropic mesh generator that is not based on the Delaunay, frontal or octree method. Instead, it proceeds by local optimizations and uses an anisotropic shape criterion to fit a metric field. Then, we introduce a new 3D metric field that tightens the mesh around interfaces when the calculation domain is divided in several subdomains, and a 3D metric field that places enough elements through each subdomain thickness, without introducing too many nodes in the other directions. Finally, we show some applications for material forming geometries

Mots clés: Elliptic interpolation; Interface refinement; Thickness detection and curvature treatment; Topology and shape optimization

Domaines: Matériaux

Cyril Gruau, Thierry Coupez. 3D tetrahedral, unstructured and anisotropic mesh generation with adaptation to natural and multidomain metric. Computer Methods in Applied Mechanics and Engineering, 2005, 194 (48-49), pp.Pages 4951-4976. ⟨10.1016/j.cma.2004.11.020⟩. ⟨hal-00517639⟩