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Problem with creating thickness
3 Attachment(s)
Hello experts.
I'm working on blood vessel with FSI methode. I have a stl file for artery(without thickness) and convert it to IGS. and there is no problem in modelling it as a fluid zone(no FSI).now for FSI methode I need to create 0.7mm thickness for wall. for that I create a surface body in design modeller and I put 0.7mm for thickness in ansys mechanical. but when I create thickness,there is a hole or empty space in artery. Attachment 53921 Attachment 53922 Attachment 53923 have anyone suggestion for this problem? please help me. |
If I look at this geometry there are some problematic points:
- Elements with an large aspect ratio. Should be less than 1:5 everywhere and less 1:3 in areas of interest - Abrupt changes in element size. It is better to avoid this, at least in areas which are of special interest. Getting a good mesh is one of the crucial point whes simulation partial differential equations. There is no shortcut. I always used my own geometry generators for meshing, but my experiences are only 2D. BTW: I find that problem very interesting and would like to read more form your results. |
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