PARADISCYL:Cylinder-bug: Difference between revisions
Jump to navigation
Jump to search
(Created page with '= Bug in cylinder code : usage of cell= ==ILL RYU== ===May 1, 2010=== ParaDiS uses cells to compute stress. Now, if we use more than 3 cells, there are discontinuities near the …') |
No edit summary |
||
| Line 1: | Line 1: | ||
= |
= Discontinuities in stress : usage of cell= |
||
==ILL RYU== |
==ILL RYU== |
||
===May 1, 2010=== |
===May 1, 2010=== |
||
Revision as of 23:17, 31 May 2010
Discontinuities in stress : usage of cell
ILL RYU
May 1, 2010
ParaDiS uses cells to compute stress. Now, if we use more than 3 cells, there are discontinuities near the boundary of cells. Here, 3 kinds of models are tested to see the discontinuities: Using 3 cells without FMM, Using 8 cells without FMM, Using 8 cells with FMM.
Model geometries
In the model, square dislocation loop is located at the center of the simulation domain as following figure.
![[cylinder_square]](/mediawiki/images/thumb/0/0b/Cylinder_square.jpg/386px-Cylinder_square.jpg)
[cylinder_square]
![[cylinder_square]](/wiki/File:Cylinder_square.jpg)
Blue line : 3 cells
Red line: 8 cells without FMM
Green line: 8 cells with FMM
Infinite stress
Image stress stress
Total stress
Conclusion
As we can see, if we use more that 3 cells for the stress calculation, the solutions are getting unstable.