Meshing Issues using Tet elements
Meshing Issues using Tet elements
(OP)
I have been having trouble getting two annular parts to mesh. I am trying to produce a mesh using tet- elements which will be used in a thermal-mechanical analysis. I can mesh the model when the seed size is large but when I lower it to around 0.005 the model will not mesh and I get an error message that says there was a problem with the boundary triangles in the model. I believe theat it has something to do with the partitions I have applied to several surfaces and cells in the parts.
My questions are:
1. Is there something I am missing in the model that will not allow it to mesh? I.e. a control or setting that I should be changed?
2. I need to apply a surface heat flux to only part of the model which is why I have done the partitioning. Is there a different way to do this without partitioning that will allow me to still only apply a heat flux to part of a surface?
I have attached the .cae file with the seeds and partitions that will not mesh.
Thanks
My questions are:
1. Is there something I am missing in the model that will not allow it to mesh? I.e. a control or setting that I should be changed?
2. I need to apply a surface heat flux to only part of the model which is why I have done the partitioning. Is there a different way to do this without partitioning that will allow me to still only apply a heat flux to part of a surface?
I have attached the .cae file with the seeds and partitions that will not mesh.
Thanks





RE: Meshing Issues using Tet elements
Since this is basically coaxial cable I would suggest partitioning with the X and Y planes and then you can mesh with a structured hex mesh.
I hope this helps.
Rob Stupplebeen
RE: Meshing Issues using Tet elements
I'll also look into the Hex mesh.
Thanks for the help.
RE: Meshing Issues using Tet elements
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Rob Stupplebeen
RE: Meshing Issues using Tet elements
Tata
RE: Meshing Issues using Tet elements
When you partitioned the model on the X and Y plane did you partition the cells in the models or the surfaces? I assume it's the cells but just want to make sure.
I know the seed size is a bit of an over kill but I'm trying to get mesh independence so I'm just taking it down to explore the numbers. In the final model I should be using something more course.
Will the structured hex mesh have problems with the curved nature of the cylinders? I know there is a curvature control in the seed part dialogue box and I believe this is what controls that. Do you know if that is correct or not?
Corus,
Sorry you could not open the model but sounds like I need to try hex elements.
Thank you all for your help
RE: Meshing Issues using Tet elements
I usually start coarse and then refine once everything is working.
I did not see any issues with the hex mesh. I believe the curvature control is to add more elements were curvature is changing rapidly.
I hope this helps.
Rob Stupplebeen
RE: Meshing Issues using Tet elements
I was wondering how you knew to use that approach? I have only been using Abaqus since the beginning of the year and my experience is a little limited. I would like to know for future models.
I am starting a new thread related to convergence issues I am having in a model. It would be great if either one of you could take a look at it.
Thanks for all of the help.
RE: Meshing Issues using Tet elements
Rob Stupplebeen
RE: Meshing Issues using Tet elements
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Thanks