Boundary conditions in a meshless staggered particle code

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A meshless method utilizing two sets of particles and generalized boundary conditions is introduced. Companion sets of particles, one carrying velocity and the other carrying stress, are employed to reduce the undesirable effects of colocation of all field variables and increase accuracy. Boundary conditions implemented within this staggered framework include contact, stress-free, stress, velocity, and symmetry constraints. Several test problems are used to evaluate the method. Of particular importance is the motion of stress particles relative to velocity particles in higher dimensions. Early results show promise, but difficulties remain that must be overcome if the staggered technique is to be ... continued below

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10 p.

Creation Information

Libersky, L.D. & Randles, P.W. July 1, 1998.

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  • Libersky, L.D. Los Alamos National Lab., NM (United States)
  • Randles, P.W. Field Command Defense Special Weapons Agency, Kirtland AFB, NM (United States)

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Description

A meshless method utilizing two sets of particles and generalized boundary conditions is introduced. Companion sets of particles, one carrying velocity and the other carrying stress, are employed to reduce the undesirable effects of colocation of all field variables and increase accuracy. Boundary conditions implemented within this staggered framework include contact, stress-free, stress, velocity, and symmetry constraints. Several test problems are used to evaluate the method. Of particular importance is the motion of stress particles relative to velocity particles in higher dimensions. Early results show promise, but difficulties remain that must be overcome if the staggered technique is to be successful.

Physical Description

10 p.

Notes

OSTI as DE98003452

Source

  • 4. world congress on computational mechanics, Buenos Aires (Argentina), 29 Jun - 2 Jul 1998

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  • Other: DE98003452
  • Report No.: LA-UR--98-590
  • Report No.: CONF-980639--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 663196
  • Archival Resource Key: ark:/67531/metadc708717

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Creation Date

  • July 1, 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 21, 2016, 10:14 p.m.

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Libersky, L.D. & Randles, P.W. Boundary conditions in a meshless staggered particle code, article, July 1, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc708717/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.