Quadrilateral finite element mesh coarsening

DWPI Title: Computer implemented method for coarsening quadrilateral mesh such as two-dimensional (2D) finite element mesh using partial chord extraction technique, involves merging node pairs along path to collapse coarsening path
Abstract: Techniques for coarsening a quadrilateral mesh are described. These techniques include identifying a coarsening region within the quadrilateral mesh to be coarsened. Quadrilateral elements along a path through the coarsening region are removed. Node pairs along opposite sides of the path are identified. The node pairs along the path are then merged to collapse the path.
Use: Computer implemented method for coarsening quadrilateral mesh such as 2D finite element mesh using partial chord extraction technique.
Advantage: The mesh element is collapsed in a quadrilateral mesh by merging two opposite nodes of the quadrilateral element, so that the mesh element residing at the intersection of dual chords can be removed accurately and the number of mesh element is reduced and the intersecting of reconfigurable mesh is avoided.
Novelty: The method (2800) involves identifying coarsening region (2810) within quadrilateral mesh to be coarsened. The Quadrilateral elements along path which changes between chords within the coarsening region is removed (2815) and node pairs along opposite sides of path are identified (2820).The node pairs along path are merged to collapse coarsening path (2825). The template elements are inserted at the locations within the coarsening region in which the path changes between the chords including a series of the quadrilateral elements that are connected through opposite edges.
Filed: 10/17/2007
Application Number: US2007874008A
Tech ID: SD 10166.2
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
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