Hello, my question is about how I am able to add two or more meshes.
My goal is to export a mesh of a ct scan of the prostate. I do that using slicer3d to create a surface mesh from the label map. I continue by creating a volume mesh using gmsh derived from the surface mesh.
I want to set specific domain around the surgery needles (used during the brachytherapy procedure ) in the prostate mesh.
To do that I think to make a label mask for the needles position and create another mesh which will be consisted of a number of aligned parallelepipeds.
Now my question is if its possible to combine the volume mesh of the prostate with the volume mesh of the needles in order to obtain a mesh with multiple domains which I will use for FE analysis giving different conditions to the needles domain.
ps. By needle domain i refer in fact to a region of the prostate (around a needle) where edema is considered to be initialised.
Thank you in advance Konstantinos.
Hi
I work with noise, vibration, dynamic fatigue and similar .I can therefore answer only with respect to general meshing.
Merging of volume meshes is difficult. The workflow is to
If you have very detailed 3d meshes, you can try to cut out sections of these and try the above for only part of your volume.
Hope this helps
Claes
Hello Claes!
Yes it really helps, i was thinking something like that but my concern is that imagine that the first mesh is an irregular look like hazelnut mesh. And the second mesh is an orientation of parrallelepipeds which have to merged with the hazelnut. I could insert the second mesh in the volume of the first croping first the intersecting regions. But something like that could allow me to have a good mesh after refining it or possibly i will mess up things? This is my concern. Also do you have a software to suggest for this operations? I think of hypermesh but a open source software would be good too.
Thank you for your response.
Best regards,
Konstantinos
Hi Konstantinos
For Open Source tools, take a look at
- GMSH: http://geuz.org/gmsh/
- Salome: http://www.salome-platform.org/
- Netgen: http://www.hpfem.jku.at/netgen/
- Meshlab: http://meshlab.sourceforge.net/
GMSH is executed using commands.Salome & Meshlab have GUIs.
Salome can do volume from surface mesh, but uses a plugin that is commercial. I believe academics may get it for free. Netgen is used in Salome.
Meshlab is intended for preparing geomtry for 3D printers.
Sincerely
Claes
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