First step with FEM

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doul
Posts: 42
Joined: Fri Dec 25, 2020 4:14 pm

Re: First step with FEM

Postby doul » Sun Jan 24, 2021 7:14 pm

Kunda1 wrote:
Sun Jan 24, 2021 1:26 pm
doul, very cool.
;)
BTW, please remove your version info from your signature.


No problem, it's done.
Also, do you know any folks in the *BSD world that are running v0.19 natively ?
As far I know : no, before the virtual way I try to compile FreeCAD from sources, I failed. After some web searching I saw many "small" modification have to be done. In FreeBSD this job is made by the port maintainer, that requires time and programming knowledge.
FreeCAD is cool 8-)
User avatar
doul
Posts: 42
Joined: Fri Dec 25, 2020 4:14 pm

Re: First step with FEM

Postby doul » Mon Feb 08, 2021 9:49 pm

Try the power of external mesher : gmsh

It's a 6061 aluminium tube, 4000N load in center, 6m range.

Design in FreeCAD -> export in brep format to gmsh
- change mesh options (size min/max, MechAdapt for 2D algorithm)
- mesh 2D
- recombine 2D (triangles -> quadrangle)
- set order 2
- mesh 3D
- save mesh and export in inp format -> import in FreeCAD, just drag'n drop in analysis and go on as usual.
gmsh.png
gmsh.png (242.25 KiB) Viewed 110 times
fem.png
fem.png (243.4 KiB) Viewed 110 times
tube.FCStd
(755.61 KiB) Downloaded 5 times
FreeCAD is cool 8-)