Octree-based automatic mesh generation for non-manifold domains |
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Authors: | Dr M Saxena P M Finnigan C M Graichen A F Hathaway V N Parthasarathy |
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Affiliation: | (1) Solid Mechanics Laboratory, GE Corporate Research and Development, Building K-1, Room 3A20, BO Box 8, 12301 Schenectady, NY, USA |
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Abstract: | Automatic mesh generation within the context of non-manifold geometric models is far from a commercial reality. While manifold objects are the most commonly encountered domains in many applications, other applications such as those requiring multiple material models and mixedmodel representations (combination of 1-D, 2-D and 3-D domains) fall beyond the realm of the existing automatic meshing procedures as they require a non-conventional modeling enviroment, namely the non-manifold topology (NMT) based environment. This paper focuses on automatic mesh generation issues in the context of two such applications: (i) finite element modeling for multiple material models and (ii) geometric abstractions requiring a mixed-model representation. Specifically, the paper describes a geometry utility system, built around an NMT data structure and geometry-based meshing algorithms that ensure the validity of the mesh for non-manifold domains.GE Consulting Services. |
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Keywords: | Finite element modeling Automatic Mesh generation Non-manifold Topology Gating plan synthesis Octree |
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