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Error: At least two vertices are needed!

Posted Dec 6, 2012, 8:50 p.m. EST Version 4.2 1 Reply

Zahra Mardy
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Hi,

I have just finished the Geometry part but when I want to go to the Material and define them, I see this error.
In my model I used circles, difference, and polygons. I am not sure which part went wrong!

1 Reply Last Post Dec 7, 2012, 12:51 a.m. EST
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Dec 7, 2012, 12:51 a.m. EST
Hi

from what you say it's not easy either for us to understand ;) but 2 vertices (points) per line element is a geometrical topological constraint. Maybe the sizes of some of the features is so small compared to the geometry resolution, that COMSOL cannot decompose your geometrical objects into entities for the FEM

--
Good luck
Ivar
Hi from what you say it's not easy either for us to understand ;) but 2 vertices (points) per line element is a geometrical topological constraint. Maybe the sizes of some of the features is so small compared to the geometry resolution, that COMSOL cannot decompose your geometrical objects into entities for the FEM -- Good luck Ivar

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