[Paraview] stress tensors

[Gertjan van Zwieten]

Thanks for the reply. I'm afraid right now I can not afford the time
to start writing filters or extensions; the learning curve is a bit
too steep. I was rather hoping for a built-in hidden feature. ( I
suppose you get that a lot ;)

I'll just leave it for now. Thanks anyhow.

Gertjan


On 4/14/08, Berk Geveci <berk.geveci at kitware.com> wrote:
> 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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