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by UR_
Wed Jul 14, 2021 1:49 pm
Forum: Help on using FreeCAD
Topic: [Solved] How to draw a photomask with FreeCAD
Replies: 17
Views: 852

Re: How to draw a photomask with FreeCAD

QCAD has some functions to explode DXF's texts and bsplines to simple arcs and lines. https://ribbonsoft.com/en/download https://github.com/qcad/qcad LibreCAD can recode those files to lower level DXF versions, i.e. R12 Screenshot 001.png https://sourceforge.net/projects/librecad/files/Windows/Night...
by UR_
Tue Jul 13, 2021 4:44 pm
Forum: Help on using FreeCAD
Topic: how to make two splines g1
Replies: 3
Views: 126

Re: how to make two splines g1

Something like this? Animation.gif bspline_bspline_g1.FCStd version: OS: Windows 10 (10.0) Word size of FreeCAD: 64-bit Version: 0.20.25220 (Git) Build type: Release Branch: master Hash: 46282db7c8c65d1205a4cd03499d4beadb1573c6 Python version: 3.9.6 Qt version: 5.12.9 Coin version: 4.0.0 OCC version...
by UR_
Tue Jul 13, 2021 2:29 pm
Forum: FEM
Topic: Simulating Low Youngs Modulus <0.5MPa Problem Limitation
Replies: 10
Views: 751

Re: Simulating Low Youngs Modulus <0.5MPa Problem Limitation

Sorry but this solution looks a little bit strange. All floating points fields read from ccx are F20.0 FORTRAN input fields. So line 91 f.write("{0:.0f}, {1:.3f}\n".format(YM_in_MPa, PR)) should be changed to: f.write("{0:.13G}, {1:.3f}\n".format(YM_in_MPa, PR)) That's all. Pleas...
by UR_
Tue Jul 13, 2021 1:24 pm
Forum: FEM
Topic: Implemented ccx's CENTRIF label from *DLOAD card
Replies: 14
Views: 1709

Re: Implemented ccx's CENTRIF label from *DLOAD card

Should this PR be rejected
or what's your plan to cleanup?
by UR_
Sun Jul 11, 2021 10:53 am
Forum: FEM
Topic: Simulating Low Youngs Modulus <0.5MPa Problem Limitation
Replies: 10
Views: 751

Re: Simulating Low Youngs Modulus <0.5MPa Problem Limitation

I think there is a bug in: ...src\Mod\Fem\femsolver\calculix\writer.py line 1431 if mat_obj.Category == "Solid": f.write("*ELASTIC\n") f.write("{0:.0f}, {1:.3f}\n".format(YM_in_MPa, PR)) {:.0f} means: format float with no decimal places :shock: This has to be changed. :...
by UR_
Wed Jul 07, 2021 8:19 am
Forum: FEM
Topic: Implemented ccx's CENTRIF label from *DLOAD card
Replies: 14
Views: 1709

Re: Implemented ccx's CENTRIF label from *DLOAD card

ATM I'm in a hurry, having no spare time.
So please feel free and merge.
I will have a look afterwards. :?
by UR_
Thu Jul 01, 2021 2:59 pm
Forum: FEM
Topic: [Ticket #4617] Virtual elements
Replies: 33
Views: 5107

Re: [Ticket #4617] Virtual elements

Specific use case from a FreeCAD user :D


https://calculix.discourse.group/t/how- ... omax/656/3
by UR_
Wed Jun 30, 2021 8:24 am
Forum: FEM
Topic: FEM: No nodes found in Frd file - Win 7 Ult. 64bit - FreeCAD-0.19 rev 24291
Replies: 6
Views: 774

Re: FEM: No nodes found in Frd file - Win 7 Ult. 64bit - FreeCAD-0.19 rev 24291

Mesh quality of your model is ways too bad. Screenshot 002.png Acute-angled tetrahedrons of this kind are fault-prone to neg. jacobians. Tetrahedron's aspect ratio shouldn't exceed 2.0 Therefore before meshing some manual approximate calculations are recommend. For example: Screenshot 004.png Just t...
by UR_
Mon Jun 28, 2021 3:22 pm
Forum: FEM
Topic: Tool to split a surface for Fem
Replies: 2
Views: 483

Re: Tool to split a surface for Fem

Some days ago, we had similar question in german forum


https://forum.freecadweb.org/viewtopic.php?f=13&t=58595


Hope google will help translating into a usable language :?
by UR_
Sun Jun 27, 2021 9:03 am
Forum: FEM
Topic: FEM: No nodes found in Frd file - Win 7 Ult. 64bit - FreeCAD-0.19 rev 24291
Replies: 6
Views: 774

Re: FEM: No nodes found in Frd file - Win 7 Ult. 64bit - FreeCAD-0.19 rev 24291

Check Geometry says: Checked object: _0210625.Compound (Compound): Shape type: Compound Vertices: 940 Edges: 1410 Wires: 596 Faces: 576 Shells: 49 Solids: 49 CompSolids: 0 Compounds: 1 Shapes: 3621 ---------- Area: 32197973.886 Volume: 119134262.174 Length: 731837.755 Orientation: Forward So your m...

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