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Structure of Stiffness
Conditions on Triangulation
You need nicely shaped triangles to ensure that
for each
i
(diagonal dominance)
This is satisfied if triangulation is such that
for every internal edge
e
(Figure FEM 8a).
Figure: FEM 8a
Skinny triangles violate this!
Figure: FEM 8b
Geoffrey Fox
,
Northeast Parallel Architectures Center
at Syracuse University,
gcf@npac.syr.edu
for every internal edge e (Figure FEM 8a).
Figure: FEM 8a
Figure: FEM 8b