Premium
An improved generalized particle algorithm that includes boundaries and interfaces
Author(s) -
Johnson Gordon R.,
Beissel Stephen R.,
Stryk Robert A.
Publication year - 2001
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.316
Subject(s) - interface (matter) , invariant (physics) , boundary (topology) , particle system , algorithm , computer science , orientation (vector space) , particle (ecology) , boundary value problem , geometry , mathematics , mathematical analysis , geology , parallel computing , computer graphics (images) , oceanography , bubble , maximum bubble pressure method , mathematical physics
This paper presents an improved generalized particle algorithm (GPA), as well as new boundary and interface algorithms for particle interaction with finite elements and other particles (of different materials). The improved GPA uses a local co‐ordinate system that is aligned with the boundaries and/or interfaces for the determination of the strain rates and forces. This enables the boundary and interface algorithms to be applied in a straightforward manner. It also provides an invariant solution that is independent of the orientation of the global co‐ordinate system. Several examples are presented to illustrate the effects of the various algorithms. Copyright © 2001 John Wiley & Sons, Ltd.