Mesh-Based Geometry: A Systematic Approach To Constructing Geometry From A Finite Element Mesh.
Steven James Owen, David R. White · 2001
A new system for defining geometry based on features of a finite element mesh is described. A systematic approach to building a complete geometric and topologic representation of a model given only the finite element description is proposed. Geometry and topology entities including volumes, surfaces, curves and vertices, can be implied based on user defined boundary conditions or surface features. Curve and surface geometry is described by either linear triangular facets or G continuous 4th order Bezier patches. The proposed Mesh-Based Geometry (MBG) system serves as an alternative to the CAD-based system currently in use in Sandia National Laboratory's, CUBIT mesh generation toolkit. CGM enables the mesh-based geometry to work seamlessly with existing geometry and meshing tools already developed within the CUBIT environment.