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Journal Articles Computer Aided Geometric Design Year : 2011

Obtuse triangle suppression in anisotropic meshes

Abstract

Anisotropic triangle meshes are used for efficient approximation of surfaces and flow data in finite element analysis, and in these applications it is desirable to have as few obtuse triangles as possible to reduce the discretization error. We present a variational approach to suppressing obtuse triangles in anisotropic meshes. Specifically, we introduce a hexagonal Minkowski metric, which is sensitive to triangle orientation, to give a new formulation of the centroidal Voronoi tessellation (CVT) method. Furthermore, we prove several relevant properties of the CVT method with the newly introduced metric. Experiments show that our algorithm produces anisotropic meshes with much fewer obtuse triangles than using existing methods while maintaining mesh anisotropy

Dates and versions

hal-00763324 , version 1 (10-12-2012)

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Feng Sun, Yi-King Choi, Wenping Wang, Dong-Ming Yan, Yang Liu, et al.. Obtuse triangle suppression in anisotropic meshes. Computer Aided Geometric Design, 2011, 28 (9), pp.537-548. ⟨10.1016/j.cagd.2011.09.007⟩. ⟨hal-00763324⟩
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