Hello, I designed a tiny heat sink and I'd like to test it with FEM.
The problem is the FreeCad gmsh cannot make the volume mesh of my model.
Isome forum said, "set Max size of element appropriately" but I cannot test it because when I set the max size as 0.5mm then it stops.
Could you help me?
The file size is big so an attached the drive link
https://drive.google.com/file/d/1xhIE19 ... sp=sharing
OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.4 (GitTag)
Build type: Release
Branch: releases/FreeCAD-0-18
Hash: 980bf9060e28555fecd9e3462f68ca74007b70f8
Python version: 3.6.6
Qt version: 5.6.2
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: Korean/SouthKorea (ko_KR)
FEM gmsh Mesh cannot makes volume
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FEM gmsh Mesh cannot makes volume
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Re: FEM gmsh Mesh cannot makes volume
Moved to FEM forum.
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Re: FEM gmsh Mesh cannot makes volume
When i check the model in part (part >> check geometry: https://wiki.freecadweb.org/Part_CheckGeometry)
it looks like it is a solid.
When i set the bop check on i got a bunch of errors. could be possible that the reason of your problem.
Code: Select all
HeatSink.refine:
VERTEX : 618
EDGE : 914
WIRE : 317
FACE : 301
SHELL : 1
SOLID : 1
COMPSOLID : 0
COMPOUND : 1
SHAPE : 2153
When i set the bop check on i got a bunch of errors. could be possible that the reason of your problem.
Re: FEM gmsh Mesh cannot makes volume
Hello!
Tip: when performing Boolean operations it is preferable that the contact surfaces are not coplanar but interpenetrating by a few tenths of mm.
This is the error report from FEM Mesh Gmsh:
“Error : Invalid boundary mesh (overlapping facets) on surface 251 surface 253 Error : No elements in volume 1 Warning : Surface mesh: worst distortion = -2594.44 (avg = -0.393704, 99 elements with jac.”
A further investigation was not possible because your file is not complete with all the parametric construction phases.
However I think this can be very useful to you: https://forum.freecadweb.org/viewtopic.php?t=34912
Hi Good job!
Tip: when performing Boolean operations it is preferable that the contact surfaces are not coplanar but interpenetrating by a few tenths of mm.
This is the error report from FEM Mesh Gmsh:
“Error : Invalid boundary mesh (overlapping facets) on surface 251 surface 253 Error : No elements in volume 1 Warning : Surface mesh: worst distortion = -2594.44 (avg = -0.393704, 99 elements with jac.”
A further investigation was not possible because your file is not complete with all the parametric construction phases.
However I think this can be very useful to you: https://forum.freecadweb.org/viewtopic.php?t=34912
Hi Good job!