[vtkusers] Tetrahedral elements

[Hong Wan]

Hi Leila

Is it possible for vtk to close a surface with big holes or gap?? Or if
you know of any alternative s/w that are able to do that. The presence
of small holes or gaps is part and parcel of marching cubes algorithms
and I am wondering if vtk has other classes available to address this
problem.

Thanks

Hong Wan

-----Original Message-----
From: vtkusers-admin at public.kitware.com
[mailto:vtkusers-admin at public.kitware.com] On Behalf Of Leila Baghdadi
Sent: Wednesday, November 20, 2002 12:14 AM
To: Hong Wan
Cc: 'Xiangyi Liu'; 'vtkuser maillist'
Subject: RE: [vtkusers] Tetrahedral elements

Hi Hong

To my knowledge ICEM needs a closed surface in order to generate
internal 
tetrahedrals but you better check this through their website.

Hope this helps


Leila

On Tue, 19 Nov 2002, Hong Wan wrote:

> Hi Leila,
> 
> Thanks for answering, I am also interested in this method. 
> 
> Using ICEM is it possible to close a gap or hole from the surface
> generated from vtk?? I believed the import format to ICEM will be stl.
> 
> 
> Regards
> Hong Wan
> 
> -----Original Message-----
> From: vtkusers-admin at public.kitware.com
> [mailto:vtkusers-admin at public.kitware.com] On Behalf Of Leila Baghdadi
> Sent: Tuesday, November 19, 2002 1:46 AM
> To: Xiangyi Liu
> Cc: vtkuser maillist
> Subject: Re: [vtkusers] Tetrahedral elements
> 
> Hi  Xiangyi
> 
> I have done alot of FE mesh generation with VTK in the past and I can 
> recall any method directly in VTK which will allow you to create 
> tetrahedral elements out of a surface. The method we used was to
create 
> a surface using VTK and use a commercial package (ICEM) to generate 
> internal tetrahedral elements.
> 
> Hope this helps
> 
> Leila
> 
> 
> 
>  On Mon, 18 Nov 2002, Xiangyi Liu wrote:
> 
> > Dear vtkusers:
> > 
> > I am a new user of vtk and still learning from the user's guide. Now
I
> have a 
> > problem which I found no answer in the guide. I will aprreciate your
> advice.
> > 
> > We have huge data files of microstructure image. We hope to mesh the
> volume of 
> > the stucture into tetrahedral elements with smooth triangulated
> surface. The 
> > surface part seems to be workabe, as to chopping the volume into
> tetrahedral I 
> > found no solution. I wonder if you have come across such problem
> during your 
> > use of vtk, and what you have done to overcome or bypass this
problem.
> > 
> > Thank you for your help!
> > 
> > Xiangyi
> > 
> > -----------------------------------------------
> > Xiangyi Liu
> > Graduate Student
> > Aerospace and Mechanical Engineering Department
> > University of Notre Dame
> > -----------------------------------------------
> > 
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