DYNA3D Non-reflecting Boundary Conditions - Test Problems

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Two verification problems were developed to test non-reflecting boundary segments in DYNA3D (Whirley and Engelmann, 1993). The problems simulate 1-D wave propagation in a semi-infinite rod using a finite length rod and non-reflecting boundary conditions. One problem examines pure pressure wave propagation, and the other problem explores pure shear wave propagation. In both problems the non-reflecting boundary segments yield results that differ only slightly (less than 6%) during a short duration from their corresponding theoretical solutions. The errors appear to be due to the inability to generate a true step-function compressive wave in the pressure wave propagation problem and due ... continued below

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Zywicz, E September 28, 2006.

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Two verification problems were developed to test non-reflecting boundary segments in DYNA3D (Whirley and Engelmann, 1993). The problems simulate 1-D wave propagation in a semi-infinite rod using a finite length rod and non-reflecting boundary conditions. One problem examines pure pressure wave propagation, and the other problem explores pure shear wave propagation. In both problems the non-reflecting boundary segments yield results that differ only slightly (less than 6%) during a short duration from their corresponding theoretical solutions. The errors appear to be due to the inability to generate a true step-function compressive wave in the pressure wave propagation problem and due to segment integration inaccuracies in the shear wave propagation problem. These problems serve as verification problems and as regression test problems for DYNA3D.

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PDF-file: 10 pages; size: 0 Kbytes

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  • Report No.: UCRL-TR-224947
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/895422 | External Link
  • Office of Scientific & Technical Information Report Number: 895422
  • Archival Resource Key: ark:/67531/metadc887003

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  • September 28, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 23, 2016, 5:03 p.m.

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Zywicz, E. DYNA3D Non-reflecting Boundary Conditions - Test Problems, report, September 28, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc887003/: accessed November 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.