Formation of pyramid elements for hexahedra to tetrahedra transitions

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Description

New algorithms are proposed for the modification of a mixed hexahedra-tetrahedra element mesh to maintain compatibility by the insertion of pyramid elements. Several methods for generation of the pyramids are presented involving local tetrahedral transformations and/or node insertion near the hex/tet interface. Local smoothing and topological operations improve the quality of the transition region. Results show superior performance of the resulting elements in a commercial finite element code over non-conforming interface conditions.

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17 p.

Creation Information

OWEN,STEVEN J. & SAIGAL,SUNIL February 24, 2000.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 17 times . More information about this article can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

New algorithms are proposed for the modification of a mixed hexahedra-tetrahedra element mesh to maintain compatibility by the insertion of pyramid elements. Several methods for generation of the pyramids are presented involving local tetrahedral transformations and/or node insertion near the hex/tet interface. Local smoothing and topological operations improve the quality of the transition region. Results show superior performance of the resulting elements in a commercial finite element code over non-conforming interface conditions.

Physical Description

17 p.

Notes

OSTI as DE00751546

Medium: P; Size: 17 pages

Source

  • Journal Name: Computer Methods in Applied Mechanics and Engineering; Other Information: Submitted to Computer Methods in Applied Mechanics and Engineering

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  • Report No.: SAND2000-0494J
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 751546
  • Archival Resource Key: ark:/67531/metadc710060

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • February 24, 2000

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

Description Last Updated

  • April 7, 2017, 3:34 p.m.

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Citations, Rights, Re-Use

OWEN,STEVEN J. & SAIGAL,SUNIL. Formation of pyramid elements for hexahedra to tetrahedra transitions, article, February 24, 2000; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc710060/: accessed April 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.