Hi Mario,
sending again to the list. the weights have 2 dimensions i (node id) and
j (Gauss point id), so to generate ShapeFunctionWeights for a new
QuadratureSchemeDefinition what you do is evaluate each shape function
at each Gauss point. For the linear quadrilateral you'll end up with 16
weights. For example see the example
http://www.hpcvis.com/vis/images/vtk-quadrature-points-example/vtk-quadrature-points-example.pdf
http://www.hpcvis.com/vis/images/vtk-quadrature-points-example/quadrature-points-example.vtu
Burlen
On 11/29/2013 3:34 PM, Marios Mavros wrote:
Hi Burlen,
I want to thank you for the information that you send me. I read the
paper and I try to made a simple example in xml format for a 4 node
quadrilateral element but it didn't work for me. Attached you will
find the element formulation that I used with the shape functions and
a .vtu file with my example. If I want to give 4 stress values in the
4 Gauss points ( lets say 0.1 0.2 0.4 -0.1) can you please write in
the .vtu file the missing information in order to understand haw I
have to write a correct file in xml format.
Thank you very much
Marios Mavros
On Wed, Nov 27, 2013 at 2:56 PM, Burlen Loring <[email protected]
<mailto:[email protected]>> wrote:
You'll need to use an XML file format. There's some documentation
in the following link. It's slightly dated but should get you
started.
http://www.vtk.org/Wiki/images/7/78/VTK-Quadrature-Point-Design-Doc.pdf
The ctest,
VTK/Filters/General/Testing/Cxx/TestQuadraturePoints.cxx, could be
used as an example.
On 11/27/2013 02:32 PM, Marios Mavros wrote:
Hi
I have wrote a simple program in Fortran that transform the
output of a finite element software in vtk Legacy Format. I don't
know how to handle the Gauss points values. For example in my
case my cells have 4 Gauss points and I have 4 values (for
example strain in x-direction) for each cell. How I have to write
the vtk file taking into account that each cell has many Gauss
points?
Thank you
Marios
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