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by fandaL
Sun May 31, 2015 10:09 am
Forum: FEM
Topic: Help with testing - part 6
Replies: 22
Views: 2815

Re: Help with testing - part 6

Thanks to sgrogan's win builds I tried to test it. Frozen values of min, max U1 displacement : When I run analysis first time, it is correct. first_analysis_run.png After that I use button to pure results and change load, for example reverse pressure load. After running new analysis I get right valu...
by fandaL
Fri May 29, 2015 7:14 am
Forum: FEM
Topic: CLOAD use mesh face area for nodeloads
Replies: 50
Views: 6874

Re: CLOAD use mesh face area for nodeloads

... What you did was apply the load to a circle shape and use a rare FEM-Mesh (the one discribed above) to model. The FEM software calculated the load on the FEM-Mesh. Could you confirm this?!? ... I created points by coordinates and built elements on this points. Fix displacement is applied direct...
by fandaL
Tue May 26, 2015 7:01 am
Forum: FEM
Topic: CLOAD use mesh face area for nodeloads
Replies: 50
Views: 6874

Re: CLOAD use mesh face area for nodeloads

I'm happy that I could help. I will inform if I find some way how to calculate exact area of faces. Computing C3D10 area as 4 triangles seems to me relatively sufficient for now. Since the not deformed edges of the mesh faces are straight lines, the area calculated by the 4 triangles should be exac...
by fandaL
Fri May 22, 2015 6:48 am
Forum: FEM
Topic: CLOAD use mesh face area for nodeloads
Replies: 50
Views: 6874

Re: CLOAD use mesh face area for nodeloads

BTW: Is there something about load applied on plates non normal to the surface as well? EDIT: Is it this book? http://de.scribd.com/doc/145808512/Fini ... iah#scribd It is this book. There are examples only for normal pressure for the plates. Different direction is not mentioned. But as I was tryin...
by fandaL
Thu May 21, 2015 7:19 am
Forum: FEM
Topic: CLOAD use mesh face area for nodeloads
Replies: 50
Views: 6874

Re: CLOAD use mesh face area for nodeloads

I'm happy that I could help. I will inform if I find some way how to calculate exact area of faces. Computing C3D10 area as 4 triangles seems to me relatively sufficient for now.
by fandaL
Wed May 20, 2015 6:53 pm
Forum: FEM
Topic: CLOAD use mesh face area for nodeloads
Replies: 50
Views: 6874

Re: CLOAD use mesh face area for nodeloads

... From my limited knowledge about the finite elmement method, I think the forces are only defined in the nodes. So ccx has to do a similar calculation for the DLOAD in order to get the node forces. The source code of ccx may give a guide, how the do this right.... Yes the forces are defined in th...
by fandaL
Mon May 11, 2015 8:35 pm
Forum: FEM
Topic: FEM Test Cases
Replies: 8
Views: 1898

Re: FEM Test Cases

I tried to simulate ulrich1a's example of the ring http://forum.freecadweb.org/viewtopic.php?f=18&t=10692&start=40 in the Nastran/Patran. Model geometry is same, but I wasn't able to read material properties from the file, so I used E = 210 000 MPa, mu = 0.3. Mesh in Nastran is similar: 2nd order te...
by fandaL
Fri Aug 01, 2014 5:09 pm
Forum: Help on using FreeCAD
Topic: Help with DXF export
Replies: 29
Views: 3522

Re: Help with DXF export

I have just tested export on "Kawasaki new paddock stand bracket july 2014.FCStd " and it works. It can be opened properly in LibreCAD and AutoCAD 2012. I downloaded recommended files and coppyed them to c:\Users\Fanda\Application Data\FreeCAD\ and changed macro folder to this folder. OS: Windows 7 ...
by fandaL
Wed Jul 30, 2014 1:23 pm
Forum: Help on using FreeCAD
Topic: crash when dimensioning in Draft
Replies: 15
Views: 2636

Re: crash when dimensioning in Draft

Thanks for testing. I will check it again, if new FreeCAD release is available. It's not urgent.
Blue screen is below.
by fandaL
Mon Jul 28, 2014 4:54 pm
Forum: Help on using FreeCAD
Topic: crash when dimensioning in Draft
Replies: 15
Views: 2636

crash when dimensioning in Draft

Hello, 1) I have problem with crashes of Windows 7 when using dimension tool in Draft workbench. It didn't make problem in the last unstable 0.14 version: OS: Windows 7 Word size: 64-bit Version: 0.14.3683 (Git) Branch: master Hash: 382e055e9b2d3159de79e3f56ef452b538b51012 Python version: 2.7.6 Qt v...

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