[Paraview] stress tensors

[Berk Geveci]

I don't think any of the tensor specific VTK algorithms are enabled by
default in ParaView. Maybe there are some that wrote plugins out
there. vtkTensorGlyph is probably a good starting point. Also, you can
use the array calculator and the python programmable filter to
calculate derived quantities. In the next version of ParaView, there
will be support for calling numpy from the programmable filter. That
would make it pretty easy to calculate some of the derived variables
you are interested in.

-berk


On Mon, Apr 14, 2008 at 12:47 PM, Gertjan van Zwieten
<gertjanvanzwieten at gmail.com> wrote:
> Hi all. I am new to paraview, and playing around a bit to see if it
>  fits my needs. It looks good but I can use some help.
>
>  I have created a simple structured_grid vtk datafile, with deformation
>  vectors as point_data and 3x3 stress tensors as cell_data. The
>  deformation I can visualize by either coloring or a warp filter. But
>  how to visualize the stress tensor? I can not find any tensor related
>  options / filters - for instance, a way to compute maximum principle
>  stresses (largest eigenvalue) or surface traction (stress times
>  normal). What would be perfect is to make a clip or slice and
>  visualize the traction at that plane as glyphs. Is something like that
>  possible?
>
>  In the list archives I found a similar question [1] that was answered
>  as "Everything you want to do (and more) to display finite element
>  structural analysis results is available in ParaView." - without
>  further explanation. Could someone please point me in the direction?
>
>  Gertjan
>
>  [1] http://www.paraview.org/pipermail/paraview/2005-March/001261.html
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