Search found 440 matches

by fandaL
Sun Jul 17, 2016 8:25 pm
Forum: FEM
Topic: Broken Young's Modulus, other bugs
Replies: 9
Views: 2446

Re: Broken Young's Modulus, other bugs

I'm not able to investigate the modulus problem.
When opening file joint3.fcstd, the FEM mesh (Mesh001001_Mesh) is, according to the Property view, a void object (0 nodes, 0 edges, ...0 volumes, 0 polyhedrons). Thus .inp file for Calculix is without mesh (that cannot give results).
by fandaL
Sun Jul 17, 2016 6:31 am
Forum: Help on using FreeCAD
Topic: "No mesh object defined in the analysis"
Replies: 21
Views: 7989

Re: "No mesh object defined in the analysis"

For the first exploring FEM workbench it can be good to look at tutorials: http://www.freecadweb.org/wiki/index.php?title=FEM_CalculiX_Cantilever_3D http://www.freecadweb.org/wiki/index.php?title=FEM_tutorial First reason why it doesn't work is that FEM analysis needs FEM mesh, which is created in t...
by fandaL
Wed Jul 13, 2016 4:15 pm
Forum: Open discussion
Topic: FEM error: SOLID SECTION can not be used
Replies: 13
Views: 2851

Re: FEM error: SOLID SECTION can not be used

I think it would be best to construct the shape using Freecad. Do you perhaps have links to tutorials that would explain how to do this type of 3D solid modelling with Freecad? For the modelling you will need sketcher and part design. I have not checked tutorial quite long time. From the Tutorial p...
by fandaL
Wed Jul 13, 2016 9:27 am
Forum: Open discussion
Topic: FEM error: SOLID SECTION can not be used
Replies: 13
Views: 2851

Re: FEM error: SOLID SECTION can not be used

In the Mesh module when I used “Meshes / Analyze / Evaluate and repair mesh” and click the last one Analyze “All above together” it gives a lot of folds which are not to be repaired correctly. Also from the look to the wireframe model slender triangles might cause later problems with meshing and FEM...
by fandaL
Tue Jul 12, 2016 4:12 pm
Forum: FEM
Topic: Material properties for each cell
Replies: 6
Views: 1960

Re: Material properties for each cell

Thanks. It works.
Wouldn't it be fine to collect tricks like this on the wiki?
http://www.freecadweb.org/wiki/index.ph ... M_Material
by fandaL
Tue Jul 12, 2016 4:10 pm
Forum: Open discussion
Topic: FEM error: SOLID SECTION can not be used
Replies: 13
Views: 2851

Re: FEM error: SOLID SECTION can not be used

I'm not much skilled in FreeCAD meshing. Maybe try to check the geometry before meshing in the Part workbench: “Part / Check geometry” for the number of solids. When meshed see in the property view (under the tree) for number of nodes, edges, ..., and volumes. If the imported file is not what you su...
by fandaL
Tue Jul 12, 2016 11:59 am
Forum: FEM
Topic: Material properties for each cell
Replies: 6
Views: 1960

Re: Material properties for each cell

Can I realize this with a macro? Defining or change in a material do not print python commands in the Python console neither to the file when recording macro. I understand that the second question was if there is some commands to drive material change. @Bernd: If I needed to drive it by python I wo...
by fandaL
Tue Jul 12, 2016 11:52 am
Forum: Open discussion
Topic: FEM error: SOLID SECTION can not be used
Replies: 13
Views: 2851

Re: FEM error: SOLID SECTION can not be used

Hi Anton, That seems you run an analysis with 1d or 2d elements (as for a beam or a shell) but without defining beam or shell properties. You need to define width and high of the beam or thickness of the shell. From menu it is “FEM / Beam cross section” or “FEM / Shell plate thickness”. Without this...
by fandaL
Sun Jul 10, 2016 9:27 am
Forum: FEM
Topic: test request, multiple material
Replies: 92
Views: 17790

Re: test request, multiple material

May be it is worthy to pay attention to the functionality rather then clicking details, so take ideas below informatively. Selecting in the workbench (or whole FreeCAD) might be consistent. I like the picking as is in the "fixed constraint". I can choose as many faces as I want without cli...
by fandaL
Fri Jul 08, 2016 9:49 pm
Forum: FEM
Topic: Material properties for each cell
Replies: 6
Views: 1960

Re: Material properties for each cell

Can I realize this with a macro? Defining or change in a material do not print python commands in the Python console neither to the file when recording macro. I understand that the second question was if there is some commands to drive material change. OS: Windows 7 Word size of OS: 64-bit Word siz...