[Insight-users] ITK:FEM : FEM SOLVERS

[Brian B Avants]

Barbara,

The ITK-FEM framework is powerful but assumes a certain amount of
knowledge about FEM.

The three different solvers are for static (stress-strain), first-order
time dependent (parabolic e.g. heat distributing through an idealized
solid) and higher order time dependent (hyperbolic e.g. elastodynamics, a
bridge oscillating) problems.

These different problems need different amounts of information about
'past' solutions that get used in the time stepping schemes.

Hughes' 'the finite element method' discusses such things.

It would be good to know what kind of problem you are interested in
solving in order to help choose a solver.  Typically, we use the
Crank-Nicolson solver for image registration.

Good luck,

Brian


On Thu, 2 Mar 2006, Barbara wrote:



> Hello:
>
> I am very interested in knowing what was the purpose of providing 3
> different solvers for the FEMElement Test setup.  What is the difference
> among them?
> More important, I will also like to know if there is someone in the
> insight-developers that works in FEM and can answers questions about ITK
> FEM?
>
> Please, let me know.
> Barbara.
>
>
>
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