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Adjusting 3D Mesh to have finer resolution in some areas
Posted 27 feb 2021, 19:12 GMT-5 General, Mesh, Structural Mechanics Version 5.6 1 Reply
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Hi, I am solving a problem in Comsol using the Structural Mechanics module and **need to know how to adjust the size of a 3D mesh on 1 domain to make it finer for some areas and coarser for others.
I have a rectangular prism with dimensions of 50 um x 50 um x 10 um. There is a fixed constraint on one 50 um x 50 um face and a 1MPa load on the other 50 um x 50 um face. There are 2 periodic boundary conditions on the remaining 2 face pairs.
I created a Free Tetrahedral mesh using a .625 um element size, but the problem is too large for my computer's memory.
The attached file "simulation," has the full simulation set up.
**Is there a way to adjust the 3D mesh so that it is coarser on the larger (50 um x 50 um) faces and finer on the 10 um x 50 um faces?
The attached picture shows what I would like to do using a Free Tetrahedral or other 3D mesh. Note that I actually achieved this picture using Free Triangular meshes, which are not suitable for my 3D problem, I just did this for the sake of illustrating what I actually want. Thank you!
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This is straightforward to do. Just use a user-defined mesh and specify different size constraints for the domain and the faces in question. See my attached, and only slightly-modified, version of your file.
-------------------Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
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