[vtk-developers] how to handle FEM data in VTK?

[Will Schroeder]

Pierre-

To be honest- creating an adaptor is hard. (That's we have been paid to do
it :-)) Yes, we have gotten it working in ParaView, I'm going to refer you
to Francois Bertel who may have some something more to add.

W

On Tue, Jul 8, 2008 at 8:09 AM, Pierre JUILLARD <pierre.juillard at gmail.com>
wrote:

> Hi Will,
>
> I thank you for your help! This paper is indeed very interesting.
>
> I think that it contains many answers to my problems. However, I do not
> really see how to make use of this framework yet.
> - are there somwhere some tutorials listing the classes to be used, and
> giving some examples of how to manage FEA results with them? (somehow
> something close to the pdf I sent previously)
> - can the data structure be then used in ParaView? I guess that specific
> filters may have to implemented, haven't them?
>
> Thank you again,
> Best regards,
>
> Pierre
>
>
> 2008/7/8, Will Schroeder <will.schroeder at kitware.com>:
>
>> Please read the paper http://www.vtk.org/pdf/AdaptorFramework.pdf. This
>> may help shed light on the topic. The point is, rather than trying to
>> shoehorn FEM data structures into VTK (which is not pretty), you can build
>> adaptors from VTK to native FEM codes and data structures.
>> W
>>
>> 2008/7/3 Pierre JUILLARD <pierre.juillard at gmail.com>:
>>
>>>  Hi all,
>>>
>>> I would like to have information about the best way to handle FEM data in
>>> VTK file.
>>>
>>> Mainly, we use shell meshes (triangles or quadrangles) and the following
>>> data would be manipulated in VTK:
>>> - reduced element or fully integrated (1 or 4 integration point in the
>>> neutral fibre)
>>> - different integration point over thickness per element (1, 3, 5, 7, 9,
>>> 11, ...)
>>> - different integration algorithms over thickness (GAUSS, SIMPSON, ....)
>>> defining different weight and locations of these integration points over
>>> thickness
>>> - stress tensor at each integration point over thickness
>>> - strain tensor at each integration point over thickness
>>> - effective plastic strain at each integration point over thickness
>>> - thickness at each integration point in the neutral fibre
>>> and possibly additional results per integration points...
>>>
>>> This topic seems to have already been tackled.
>>> Indeed, I have read several posts about the vtkLSDynaReader class, as
>>> well as its documentation on
>>> http://public.kitware.com/VTK/doc/nightly/html/classvtkLSDynaReader.html
>>>
>>> As it is indicated in one of the post, the ultimate goal would be to
>>> benefit from vtk format/library to manipulate FEM data, and  from ParaView
>>> as PostProcessor
>>>
>>> However, from these posts, it seems that VTK is not really fitted to
>>> store FEM data, and for such a purpose, a good knowledge in VTK is
>>> necessary. It may also be necessary to extend it.
>>>
>>> Most notably, it seems currently possible to have only one scalar field,
>>> vector field, and tensor field per element. In the last VTK versions, has
>>> this "limitation" been overriden?
>>> Is it possible to store several fields of different types per element?
>>>
>>> Would you have some advices about the best way to proceed?
>>> Is there somewhere some guidelines/tutorials?
>>>
>>> It the VTK format has still some limitations, is it foreseen to override
>>> them in the next release?
>>>
>>> I thank you for your help.
>>>
>>> Cheers,
>>>
>>> _______________________________________________
>>> vtk-developers mailing list
>>> vtk-developers at vtk.org
>>> http://www.vtk.org/mailman/listinfo/vtk-developers
>>>
>>>
>>
>>
>> --
>> William J. Schroeder, PhD
>> Kitware, Inc.
>> 28 Corporate Drive
>> Clifton Park, NY 12065
>> will.schroeder at kitware.com
>> http://www.kitware.com
>> 518-371-3971 (phone and fax)
>
>
>


-- 
William J. Schroeder, PhD
Kitware, Inc.
28 Corporate Drive
Clifton Park, NY 12065
will.schroeder at kitware.com
http://www.kitware.com
518-371-3971 (phone and fax)
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/vtk-developers/attachments/20080708/848cb7b6/attachment.html>