A computational study of nodal-based tetrahedral element behavior. Metadata

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Title

  • Main Title A computational study of nodal-based tetrahedral element behavior.

Creator

  • Author: Gullerud, Arne S.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: Sandia National Laboratories
    Place of Publication: United States

Date

  • Creation: 2010-09-01

Language

  • English

Description

  • Content Description: This report explores the behavior of nodal-based tetrahedral elements on six sample problems, and compares their solution to that of a corresponding hexahedral mesh. The problems demonstrate that while certain aspects of the solution field for the nodal-based tetrahedrons provide good quality results, the pressure field tends to be of poor quality. Results appear to be strongly affected by the connectivity of the tetrahedral elements. Simulations that rely on the pressure field, such as those which use material models that are dependent on the pressure (e.g. equation-of-state models), can generate erroneous results. Remeshing can also be strongly affected by these issues. The nodal-based test elements as they currently stand need to be used with caution to ensure that their numerical deficiencies do not adversely affect critical values of interest.
  • Physical Description: 50 p.

Subject

  • Keyword: Shape
  • Keyword: Computerized Simulation
  • Keyword: Mesh Generation
  • STI Subject Categories: 97 Mathematical Methods And Computing
  • Keyword: Mathematical Solutions

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: SAND2010-6309
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/1007319
  • Office of Scientific & Technical Information Report Number: 1007319
  • Archival Resource Key: ark:/67531/metadc835712