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Victor
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This error message indicates a new bug in version 9 to do with element orientation but I'm also not able to reproduce it. It may depend on what was already present before you imported the DXF file. Could you post that too? A workaround might be to …
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In principle, it can, but it may not be very convenient for more complex models. Some people report failure of the solver for severe deformations like drawing. They might need careful workarounds. In case of non-uniform temperatures, you can write…
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If you find the center, you could use Mesh tools -> Fit to curved surface with the Cylinder option. This link should edit the first post. The discussion ID 605 is shown in the URL of the current thread. I don't know why there isn't a button for …
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If you change line2 elements to line3, then these extra section shapes become available with CCX: * circle * cylinder * rectangular tube With the internal solver, you could use dynamic response with strong Rayleigh damping so that it's eff…
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Sorry for the extra problems. You can email it confidentially to support@mecway.com if you want. Here's an example showing shell elements connected to tet solids using elastic bonded contact without any problems. It even has a large gap between the…
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1. As far as I know about CCX, there's no tolerance for contact (elastic option in Mecway), either default or able to be changed. I also didn't think it generated any MPCs, so I'm surprised by this warning message. 2. No. Only if you open the .inp …
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Tools -> Labs -> Shell shear force per length If there's no Labs menu, then Tools -> Options -> General -> Labs. Beware that it's inaccurate. However, often the problem is having alternating values on adjacent nodes but if you averag…
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Yes: STEP format: Turn on the Surface mesh option in Meshing parameters. DXF or STL format: Use Mesh tools -> Automesh 2D to mesh the imported shape.
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*TIE with shells sometimes causes wrong results which might be obvious or not, so it's best to never use that. It looks like you're using version 8. In version 9, there's a new option, Elastic, which has more compatibility with shells and works in …
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View -> Open cracks is useful for spotting disconnected nodes and elements.
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I think it's too big. It says 3 000 000 nodes which must be after expanding the shells into solids. That looks like too much for CCX with the free matrix solver it comes with.
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I think the Fit to window problem is triggered by a faulty solution that leaves the display in a broken state. You may need to restart Mecway to correct it then see if the solution has extreme values or NaN using Solution -> Table. There's no si…
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I'm pleased that it's working for you but I don't understand what caused it so if anyone else comes here with the same problem, please say so. That is an error message about ngmeshed.vol while you're opening a .liml file.
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I agree about fixing the shaft unless it's spinning so fast that dynamic effects are important. The worst case force is at the tip? I guess deformations are going to be large before it breaks and that perhaps the tip bends over, distributing the fo…
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In my 3rd option, you would mesh them separately and use bonded contact. To get the 2D section, just delete all the other surfaces of the surface mesh. Edit -> Invert selection can help here. I Sergio's idea of making a 2D STEP file with all the…
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I think both ways of meshing will be OK. #1 would get a more efficient mesh, especially at the connections because it avoids bonded contact stress error and also on the thin braze layer, because hex20 elements can tolerate a very high aspect ratio.…
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It sounds normal. but some display settings can slow it down a lot: * Tools -> Options -> Contour plot -> Resolution at either of the top two settings. * In case they're still 2D shells, not CCX's 3D solids, Show thickness. This triple…
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I think that message might just be reflecting the OMP_NUM_THREADS environment variable. When I change that, it changes the number in the message to match but I still see only 25% CPU usage on my 4-core computer when CCX says "up to 4 cpu(s)".
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Thanks for the comparisons. It's not supposed to be compiled with the multithreading option so I don't know what's happening there. It's based on the General Electric version. I heard from a former colleague of the guy who compiled it that he's qui…
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Do you currently have the same problem with version 8 here http://mecway.com/download/mecway80.msi ? If not, can you show a screenshot of when it fails?
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That behavior is intentional. The mesh made from a STEP/IGES file is linked to that file so it gets replaced when you remesh it. But any other mesh, such as made with the Mesh tools menu isn't linked to anything and doesn't get updated. It's a bit o…
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Thanks for spotting that. I found Gmsh 3.0.6 (latest stable) works OK but 3.0.7 (latest automatic) has this scaling problem, so for now I'll assume it's a bug in the non-stable Gmsh. Mecway assumes the output from Gmsh is in mm because that's how i…
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Nothing useful at the moment. Just using *BEAM SECTION instead of *BEAM GENERAL SECTION since the latter seems to be deprecated in 2.13.
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That's a good point. I'm not sure the best way to do this because the UI for Gmsh is already getting a bit complicated, but I'll try to add a checkbox or something to disable them. I think Mesh.Format = 1; should remain because 1 (msh) is explicitl…
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It's supposed to show the nearest time step that exists in the solution. It doesn't interpolate between them or anything like that so they often won't have the exact same value. With automatic time stepping, they can be spaced quite far apart. The v…
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This seems to be a limitation of CCX 2.11 which Mecway still has. You can install CCX 2.13 and it does produce stress for the BOX section shape.
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I misunderstood the type of data you have, sorry. What I said was for a time series. CCX has spectral response (*STEADY STATE DYNAMICS) but it's not supported by Mecway so you'd have to write the cards by hand and possibly use CGX for post-processin…
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Gravity is under Loads & Constraints for the Dynamic response 3D analysis type but it's not there for some other analysis types which might be why you can't see it. You can specify components in all 3 dimensions so you would add the constant rea…
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You can fix the base and apply the acceleration as a time dependent gravity to the whole structure. Paste the data into the table in the gravity load. There's no acceleration boundary condition input.
