CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   OpenFOAM Running, Solving & CFD (http://www.cfd-online.com/Forums/openfoam-solving/)
-   -   FEM stress analysis (http://www.cfd-online.com/Forums/openfoam-solving/59852-fem-stress-analysis.html)

ralph January 26, 2007 08:39

Hi, I try to do some stress a
 
Hi,
I try to do some stress analysis with OpenFOAM.
For the first shot I used the "stressFemFoam" solver, which works well.
Additionally I want to analyse a case with prestressing.
I think for that I have to add an explicit term "d/dx_j(sigma_ij)" into the FEM equation.
Is there a functionality to do so in OpenFoam? (I just found the explicit functions "grad", "elementGrad", "ddt")
Can anyone give me some advice?
Ralph

herbert June 2, 2010 08:53

Hi,

I know your post is very old, but I'm facing the same problem now. For I have poor convergence with the implementation done in stressFemFoam, I want to use prestressing, but I'm not quite sure how to implement divergence of a tensor for finite elements. Did you ever solve it?

Regards
Stefan


All times are GMT -4. The time now is 07:08.