Meshing of a complex geometry tissue in Abaqus
Meshing of a complex geometry tissue in Abaqus
(OP)
Hi everyone,
I am trying to do a finite element analysis of the Temporomandibular joint disc (TMJ disc) in Abaqus. I already got the IGES model of disc from Hypermesh but the geometry needs so much partitioning to become suitable for at least Tetrahedral mesh. Would you please tell me if the partitioning is the only way and if it is the what would be the best way to do it?
I think there should be easier method to do it since I have sen much more complex geometries (like brain tissue) which has been meshed by Abaqus. I would appreciate if anyone can help me.
I am trying to do a finite element analysis of the Temporomandibular joint disc (TMJ disc) in Abaqus. I already got the IGES model of disc from Hypermesh but the geometry needs so much partitioning to become suitable for at least Tetrahedral mesh. Would you please tell me if the partitioning is the only way and if it is the what would be the best way to do it?
I think there should be easier method to do it since I have sen much more complex geometries (like brain tissue) which has been meshed by Abaqus. I would appreciate if anyone can help me.





RE: Meshing of a complex geometry tissue in Abaqus
RE: Meshing of a complex geometry tissue in Abaqus
http://www.eng-tips.com/faqs.cfm?fid=376
RE: Meshing of a complex geometry tissue in Abaqus
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RE: Meshing of a complex geometry tissue in Abaqus
http://www.eng-tips.com/faqs.cfm?fid=376
RE: Meshing of a complex geometry tissue in Abaqus
I am just wondering if this is the normal way of meshing such a complex geometry and if the answer is yes, then how they do meshing on much much more complex geometries in Abaqus? Don't you think it's better to do the meshing in Hypermesh (which I think is a better software for meshing although I am not sure if it also needs partitioning or not) and then import the model including mesh to Abaqus as a .inp file?
Btw, @IRstuff: I am not sure what you mean by decimating it, but i want to run an analysis on the whole model.
I appreciate your helps.
RE: Meshing of a complex geometry tissue in Abaqus
Rob Stupplebeen
https://sites.google.com/site/robertkstupplebeen/
RE: Meshing of a complex geometry tissue in Abaqus
http://www.eng-tips.com/faqs.cfm?fid=376
RE: Meshing of a complex geometry tissue in Abaqus
Btw regarding the meshing software you mentioned above, do you mean I can do the meshing there and then import it to Abaqus? Is the meshing procedure different from Abaqus (doesn't need partitioning)? because I know on of my friend used Hypermesh to mesh the model with Tetrahedral element and he said the software did it automatically although the mesh quality might be not that good. Then he imported the meshed model into abaqus and did the rest.
@rstupplebeen: I've tried working with Virtual topology which makes it smoother as you said but I was wondering if the partitioning is the only method to do mesh such a geometry.
Tnx
RE: Meshing of a complex geometry tissue in Abaqus
Also, try to zoom in into the geometry and check for some small features like edges. You must ignore those features using virtual topology. Finally, quadratic elements can conform to curved geometries but before you use quadratic elements, make sure the geometry is free of any issues. Note that quadratic elements are not recommended for contact (unless they are modified).
http://www.eng-tips.com/faqs.cfm?fid=376
RE: Meshing of a complex geometry tissue in Abaqus
Since I am new to abaqus, I don't know from where to start. Do I have to simply make holes inside my models and pass tube shape fibers through them and then define a material for them? in which step should I use the spring between the nodes? What is the SPRINGA element? I found all these keywords while i was searching but I still haven't managed to implement any technique yet. I would appreciate if anyone can give me a clear framework, and ideally, an step by step procedure although i know it's different case to case and you might need to know more details.
RE: Meshing of a complex geometry tissue in Abaqus
http://www.eng-tips.com/faqs.cfm?fid=376
RE: Meshing of a complex geometry tissue in Abaqus
Rob Stupplebeen
https://sites.google.com/site/robertkstupplebeen/
RE: Meshing of a complex geometry tissue in Abaqus
We use Hypermesh or Amira and dont really touch Abaqus CAE until the last step of setting the model up. Simpleware is also really good especially for setting up contact surfaces.