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by UR_
Sun Apr 16, 2017 3:40 pm
Forum: FEM
Topic: ccxInputWriter vs. Faces
Replies: 16
Views: 2175

ccxInputWriter vs. Faces

Hello, ccxInputWriter seems a little bit confused about faces and their normals. This is a solid cube under pressure from outside. Deflection as expected. box from solid.png Same box meshed from shells with unexpected result. box from shell.png Of course with files: BoxSolid.FCStd BoxShell.FCStd Per...
by UR_
Sat Apr 15, 2017 12:53 pm
Forum: Help on using FreeCAD
Topic: Loft001 is not solid
Replies: 5
Views: 697

Re: Loft001 is not solid

Hello Jacutus, sketches used for loft are fully constraint, but not closed ;) have a look here total.png zoomed.png please select sketch and check geometry with this button from Part WB PartWB GeoCheck button.png this will show up results below GeoCheck.png This should be fixed before lofting. done ...
by UR_
Fri Apr 14, 2017 3:23 pm
Forum: Help on using FreeCAD
Topic: Why are arc segments not twisted during sweep?
Replies: 9
Views: 1070

Why are arc segments not twisted during sweep?

Hello, why are arc segments not twisted during sweep? Two sweeps between twisted sketches Two sweeps.png Arc segment isnt twisted continuously, but line segments are. File TwoSweeps.FCStd done with OS: Windows 10 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.17.10802 (Git) Build ty...
by UR_
Sun Apr 09, 2017 7:54 pm
Forum: FEM
Topic: Problem with nonpositive jacobian - help appreciated
Replies: 18
Views: 5651

Re: Problem with nonpositive jacobian - help appreciated

Hello, i have also a simple example with negative jacobian, but i can't see these fancy green dots. :( Do i miss something? ccx output 0.0: Check dependencies... 0.1: Write completed. 0.0: CalculiX binary: C:/Program Files/FreeCAD/bin/ccx_2.11_MT.exe 0.0: Run CalculiX... 0.0: Starting CalculiX... 0....
by UR_
Thu Apr 06, 2017 4:57 pm
Forum: FEM
Topic: Static FEA of a Flanged Pressure Vessel
Replies: 79
Views: 9142

Re: Error Displaying CalculiX Results in v0.17

Hello, orphan nodes are not very pretty, but they seems to be no difficulty for ccx in first place. So i did some tests and they appear nearby every spherical geometry and also at toruses. Other primitives seems to be unaffected. Here is a simple as can be sphere, meshed with shell elements SphereTe...
by UR_
Wed Apr 05, 2017 4:20 pm
Forum: FEM
Topic: CalculiX 2.12 Available
Replies: 12
Views: 2666

Re: CalculiX 2.12 Available

Now tested this build:

https://github.com/ddfem/ccx_mingw64/bl ... 2_MTNO.exe
error.1480.txt
(640 Bytes) Downloaded 58 times
also done with:
win 10 x64 14393.969
OMP_NUM_THREADS=1

See some informations here:
http://mecway.com/forum/discussion/405/ccx-2-12

reducing compiler optimizations seems to work.
by UR_
Tue Apr 04, 2017 10:58 pm
Forum: FEM
Topic: CalculiX 2.12 Available
Replies: 12
Views: 2666

Re: CalculiX 2.12 Available

Hello, this is result of test suite from here http://www.dhondt.de/ccx_2.12.test.tar.bz2 error.1180.txt done on win 10 x64 14393.969 OMP_NUM_THREADS=1 Has anybody a result file for native (linux) build? Divergences are a little bit frightening :roll: Tomorrow i will do a test run on this build https...
by UR_
Mon Apr 03, 2017 7:12 pm
Forum: FEM
Topic: mesh distortion on reload (only quadratic elements)
Replies: 35
Views: 4188

Re: mesh distortion on reload (only quadratic elements)

vejmarie wrote:
Salome is not supported on MacOS or Windows, or not tested as much as on Linux, which could explain why they didn't faced this issue.
Salome users can lay back.
Everything's alright. 8-)

saved and reloaded on Salome 8.2.0 Win64
Screenshot Salome 8.2.0 Win64.png
Screenshot Salome 8.2.0 Win64.png (74.62 KiB) Viewed 994 times
by UR_
Sat Apr 01, 2017 2:05 pm
Forum: FEM
Topic: Static FEA of a Flanged Pressure Vessel
Replies: 79
Views: 9142

Re: Error Displaying CalculiX Results in v0.17

While looking at this issue, i stumbled on following formatting decision Part of "Chamber_mesh_Tmp.unv" (chapter 2411: node definition) 2411 1 1 1 11 5.9999999999999997D-15 -0.0000000000000000D+00 1.0000000000000000D+02 2 1 1 11 5.9999999999999997D-15 -0.0000000000000000D+00 -1.0000000000000000D+02 ...
by UR_
Fri Mar 24, 2017 6:25 pm
Forum: FEM
Topic: Enforced pressure-constraint in static analysis
Replies: 5
Views: 1274

Re: Enforced pressure-constraint in static analysis

Attached you can find a small example. Left face is fixed, right face gets a displacement of 10 mm. Ringauge.png Ringauge.FCStd if you are interested in reaction forces caused by this deflection, you have to edit ccx-input-file (here Fillet_mesh.inp) before ccx's execution Please insert reddish outp...

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