Boundary conditions in a meshless staggered particle code
- Los Alamos National Lab., NM (United States)
- Field Command Defense Special Weapons Agency, Kirtland AFB, NM (United States)
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.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- Department of Defense, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 663196
- Report Number(s):
- LA-UR-98-590; CONF-980639-; ON: DE98003452; TRN: AHC29818%%28
- Resource Relation:
- Conference: 4. world congress on computational mechanics, Buenos Aires (Argentina), 29 Jun - 2 Jul 1998; Other Information: PBD: [1998]
- Country of Publication:
- United States
- Language:
- English
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