Hi Burlen, Your example was really helpful to understand many thing about the xml format and I want to thank you about that, but I still have some questions.
1. What the numbers 0 4 8 12 (line 24) represent? 2. What the QuadratureWeights are all zero (line 37)? 3. In your example there are 4 cells with 4 Gauss points in each cell. In total 16 Gauss points. If I want to assign to each Gauss point one value of stress or strain how I have to write those 16 values in xml format. Can you please sent me an example with this information? Thank you very much Marios On Sat, Nov 30, 2013 at 4:28 PM, Burlen Loring <[email protected]> wrote: > 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]> 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 >> >> >> _______________________________________________ >> Powered by www.kitware.com >> >> Visit other Kitware open-source projects at >> http://www.kitware.com/opensource/opensource.html >> >> Please keep messages on-topic and check the ParaView Wiki at: >> http://paraview.org/Wiki/ParaView >> >> Follow this link to >> subscribe/unsubscribe:http://www.paraview.org/mailman/listinfo/paraview >> >> >> > >
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