Stuck? 
support@mecway.com
support@mecway.com
Mecway
FEA
Victor
About
- Username
- Victor
- Joined
- Visits
- 4,724
- Last Active
- Roles
- Administrator
Comments
-
It looks like you haven't added ontact (CCX), which is under Loads & Constraints. You need to use that to explicitly tell it which surfaces might contact each other since it defaults to ignoring contact otherwise.
-
They are 3 node elements that can be curved and have quadratic interpolation along their length. They can be used for: - Beams with the CCX solver - Fins in thermal analysis with the internal solver The internal solver doesn't have 3-node beams bec…
-
It should be OK. See this example.
-
Oh I see. 3-node beams aren't supported by the internal solver. You should also clear any other red errors in the outline tree that can be ignored with the CCX solver. If it says "Solver did not produce an output file", click "CCX output" to see th…
-
Not directly but you can make a defacto template file which is a model containing an unused material or load that has some data using the units you prefer. Then when you start a model, start from that file and it'll have set the default units for su…
-
That screenshot shows the internal solver, not CCX.
-
You'll need to use the CalculiX solver for that. 1) Download and install it as described in Chapter 14. You can get it from bConverged http://www.bconverged.com/data/content/CalculiX_2_10_win_002.zip or ddfem which is easier to sets up because it…
-
If I understand you right, it sounds like they're not connected together. You can use Bonded contact for that. If they're supposed to be initially separated but come into contact when the pressure is applied, then you need a nonlinear analysis with…
-
That does indeed look like a bug. Thanks for reporting it. I'm able to reproduce it using the files you sent me for a previous issue.
-
Thanks Sergio. If anyone else has suggestions for reports, please add them to this thread. No schedule for version 6 but I expect it to be mid 2017.
-
Could you list the information that you want in a report? I'll compile it along with anything else I find to use if/when I add that feature. So far we have: 1) "Add screenshot to report" button you just described 2) Material properties 3) Mesh stat…
-
No, it doesn't allow laminate materials on solids. You'll have to do what you're doing, though you can make it a little easier by reusing the same material definition on several components, even if they're oriented differently. Material(1)-Material(…
-
Move/Copy isn't working here because the cylinder's axis is offset from the global axis. The coordinate system used by that tool uses the same origin as the global coordinate system. I forgot to mention this limitation in my first reply. Versions 3 …
-
What menu items did you use to change the radius? There are several ways that should all work for a cylinder aligned with the global coordinate system. 1) Mesh tools -> Move/copy, coordinate system: Cylindrical. If you choose the wrong axis here…
-
The geometry view shows the back (typically the inside for a solid) of each surface in a darker color than the front so even if they weren't all aligned in Solidworks, you could see which ones were facing backwards and put a negative pressure on the…
-
Yes, a traction also applies a moment due to the shell thickness as you pointed out. No, there isn't currently a way to define a position dependent traction using the internal solver. There is a position dependent normal pressure that you can defin…
-
That's a good point. Neither open cracks or model edges is really bulletproof for this kind of subtle interior problem. I'd like to add a more powerful tool in future. Another way you might catch it is with: 1) Select faces mode 2) Show element su…
-
Great
-
You shouldn't need to move any files. Just select the .bat file from Tools->Options->CalculiX. Now I guess it's probably starting the .bat file and that may be failing to run CCX but hopefully shows some output. Click the CCX output button aft…
-
That default component causes a lot of problems. I wouldn't mind getting rid of it entirely and have a component generated on the fly when it's first needed. A lot of implications for that though.
-
All good suggestions. Thanks. Not sure when though.
-
Yes, multiple selection or at least multiple deleting has been needed for a long time so I hope to do it but can't promise. As a workaround, you can open the plain text .liml file with Notepad to delete them. Each constraint looks like in this pict…
-
That red box error message means the ccx.bat file probably doesn't exist. It may be installed in the \bin folder, not \ccx: C:\Program Files (x86)\bConverged\CalculiX\bin\ccx.bat I think changing this will get it working. Beware that using a .bat…
-
Great soundtrack You will need to use "Solve with CCX", not "Solve with Mecway" because Mecway's internal solver can't do contact. Since there's no output from CCX, not even the copyright message, it looks like a problem starting CCX. There have …
-
That's an excellent and very general technique Sergio. Also useful for models that won't solve.
-
Suggestions: 1) Look for weird parts on the geometry preview. Your 2nd file here seems to have two surfaces overlapping which you can sometimes see from the random dots shown in the attachment. These usually indicate one surface showing through ano…
-
All solid elements are correct as long as you refine the mesh until the solution stops changing much. The differences between the elements determine how fine the mesh needs to be to reach that good-enough condition. Generally, quadratic elements (h…
-
It's not implemented sorry. Since CCX's frequency doesn't quite count steps the same way as Meway's decimation, it can't be mapped directly to it. Maybe it needs another option for frequency.
-
It certainly would. I'm not sure why they don't already use the file's name but that's definitely something for me to look at improving.
-
They two surfaces have to have the same node pattern so it doesn't work with automeshed parts unfortunately. This probably isn't something I'll improve in the foreseeable future because cyclic symmetry is a rarely used feature.
