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Formula for Stiffness
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Example for Two-Dimensional
Bilinear Form of Integral with Triangular Elements
Now consider a triangulation of
(Figure FEM 4)
Figure: FEM 4
We can write
where
is the vector of vertex values of
and S is called a stiffness matrix
Geoffrey Fox,
Northeast Parallel Architectures Center
at Syracuse University, gcf@npac.syr.edu
(Figure FEM 4)
Figure: FEM 4
is the vector of vertex values of 
and S is called a stiffness matrix