Quadrilateral/hexahedral finite element mesh coarsening

DWPI Title: Computer implemented method for coarsening finite element mesh (FEM), involves extracting adaptive chord with computer and rendering FEM to display with fewer mesh elements in coarsening region
Abstract: A technique for coarsening a finite element mesh (FEM) is described. This technique includes identifying a coarsening region within the FEM to be coarsened. Perimeter chords running along perimeter boundaries of the coarsening region are identified. The perimeter chords are redirected to create an adaptive chord separating the coarsening region from a remainder of the FEM. The adaptive chord runs through mesh elements residing along the perimeter boundaries of the coarsening region. The adaptive chord is then extracted to coarsen the FEM.
Use: Computer implemented method for coarsening finite element mesh (FEM).
Advantage: The localization of the coarsening the FEM is maintained by careful construction of the adaptive chord, such that FEM is stayed within the coarsening region.
Novelty: The method involves selecting a coarsening region within FEM (2300) to be coarsened and selecting perimeter chords (2310) running along perimeter boundaries of the coarsening region. Multiple paths of the perimeter chords are redirected to create an adaptive chord separating the coarsening region from a remainder of the FEM. An adaptive chord with computer is extracted and the FEM is rendered to a display with fewer mesh elements in the coarsening region. The FEM comprises a non-hybrid FEM and conformal mesh. The coarsening region is localized to less than an entire portion of the FEM.
Filed: 10/17/2007
Application Number: US2007873864A
Tech ID: SD 10166.1
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
All rights reserved. Republication or redistribution of Clarivate content, including by framing or similar means, is prohibited without the prior written consent of Clarivate. Clarivate and its logo, as well as all other trademarks used herein are trademarks of their respective owners and used under license.