A smooth contact algorithm for the combined finite discrete element method
| Autor: | Zhou Lei, Antonio Munjiza, Bryan Euser, Esteban Rougier |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Fluid Flow and Transfer Processes
Numerical Analysis Computer science Work (physics) 0211 other engineering and technologies Computational Mechanics Potential field 02 engineering and technology 01 natural sciences Finite element method Discrete element method Contact force 010101 applied mathematics Computational Mathematics Modeling and Simulation Computational Science and Engineering 0101 mathematics Algorithm Topology (chemistry) 021101 geological & geomatics engineering Civil and Structural Engineering |
| Zdroj: | Computational Particle Mechanics. 7:807-821 |
| ISSN: | 2196-4386 2196-4378 |
| DOI: | 10.1007/s40571-020-00329-2 |
| Popis: | From its inception, the combined finite discrete element method has used a distributed potential contact force algorithm to resolve interaction between finite elements. The contact interaction algorithm relies on evaluation of the contact force potential field. The problem with existing algorithms is that the potential field introduces artificial numerical non-smoothness in the contact force. This work introduces a smooth potential field based on the finite element topology, and a generalized contact interaction law is constructed on top of the smooth potential field. A number of validation cases for the proposed algorithm, considering different shapes of discrete elements, are presented, and detailed aspects of the proposed contact interaction law are tested with numerical examples. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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