Victor

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Victor
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  • Here are signed copies of three of Mecway 34's dlls which I think will satisfy Smart App Control. Replace the same-named files in the installation directory with them. https://mecway.com/download/mecway_dlls.zip
  • @sofien_73 I should be able to add translational DOF releases in v35.
    in Mecway 34 Comment by Victor October 22
  • Unfortunately this is a limitation of the algorithm which is simply deleting elements and moving nodes, not reconnecting elements to different nodes.
    in Hole tool Comment by Victor October 17
  • This problem of torsional modes has come up before. Do you mind explaining what the problem is? Mecway has axial rotational inertia on its beam element nodes which enables torsional modes. Are you saying those modes are wrong or you just want to exc…
  • Hello @German I think I've reproduced the problem you described. It looks like discretization error. Even on the isolated faces, there is often a component of heat flux normal to the surface which skews the solution with a coarse mesh but reduces wi…
  • This happens because the combined unit sometimes has unusual dimensions that it doesn't have units for (temperature * length^3 or length^2) so it just puts that placeholder instead. I'll add units for those three cases but there could be others that…
  • I'll add that for the next version.
  • Thanks @Sergio I'll try to fix that unless it causes some unexpected logical conflict.
    in Mecway 34 Comment by Victor October 14
  • @Mishal Yes, the beam force/moment output bug was already fixed in 20260120 stable release and compatible with Mecway 33-34.
  • It should be. Bug fixes include reading OpenRadioss solutions with: - Both node-surface coupling and beam force or moment output are present. - Stress UU when both beams and shells are present. - /TH/PART requested.
    in Mecway 34 Comment by Victor October 5
  • Request for recent OpenRadioss binaries. Forwarded message from OpenCourant ================================================= @all When the upstream OpenRadioss repositories were taken down on October 1, the hm_reader input-reader binaries went wit…
  • I've put a July stable release here https://mecway.com/download/ Here's an effort to maintain it as open source: https://opencourant.org/
  • That's a pity. Version 20260120 with source and Windows binaries is here https://mecway.com/download/ I've also downloaded 20260728 (July this year) and will try to make that available soon.
  • It looks like that force is not present in the .frd file (it's approximately zero there) with CCX 2.23. I don't think anything in Mecway changed that affects that case, though it may have with forces on beams and shells. Perhaps Mecway should be re…
  • By the way, if you're willing to write some input by hand (AI can do it) and be cautious verifying the results, you might consider the Mystran solver that's included with Mecway. It has more of these connector type elements from Nastran like CBUSH (…
  • Here's an example of a connecting beam (purple) that provides vertical (Z) and transverse (Y) connection but is free in longitudinal displacement (X) and all 3 rotations.
  • You could use high-stiffness beam elements aligned vertically with released rotational DOFs (flexible joint on beam) at both ends to allow movement in only one direction. For free movement in both directions, it reduces to a truss element. Constrai…
  • Normally, Mecway converts the on-axis elements to triangles and they're OK. One way this problem can happen is if the original node was slightly on the opposite side of the axis.
  • Is there an error message in the status bar? You could try to turn down Resolution in Tools -> Options -> Contour plot. Or if you can manage to attach the file (maybe clear solution and/or zip it), I'll try to reproduce it.
  • Yes, it's not in Mecway yet. The reason is that von Mises only seems to be available at the midsurface, not top or bottom. You could write a formula to obtain those from the components or principal stresses.
  • When you click the button to pick OpenRadioss, pick the directory above exec, not exec itself because it needs the other directories at the same level as exec. Then Mecway should set the environment variables and two exe paths appropriately. I think…
  • Hello denissps The +Z and +Y View orientation options are just a convenience for things like the default view orientation, the row of red icons and clicking on the triad arrowheads. Mirror with the Z option should mirror about a plane parallel to …
  • A few problems: - Mecway doesn't make an ELSET called Default. I added one using a Named selection. - Mecway generates its own *BEAM SECTION keyword blocks which conflict with yours. I added modify keyword . - U1 is not for non-linear analysis. I c…
  • I don't think a true RBE3 is possible in CCX. From what I understand, *DISTRIBUTING is just a kind of pre-processing step to convert point forces and moments applied directly to the reference node into forces (and moments?) on the surface nodes. CC…
  • Sorry about that but thanks for reporting the bug. I've identified it and it will be fixed in the next version (34). It's triggered by /TH/PART.
  • Yes, if I add another solver, I think it would probably be Code Aster. Not sure about Opensees or OOFEM because I haven't heard about them very much. Using the same mesh could be the problem and you might need to refine it for CCX.
  • Instructions are here: https://mecway.com/forum/discussion/1012/improving-performance-of-ccx-solver/p1 I prefer option 4 - compile it but it can be much easier to download it from dhondt.de. The link is hidden in the sentence "For an update of the …
  • Hello JJ. The initial velocity is only applied to the surface of one part. The rest of it defaults to zero velocity and that quickly averages out to very slow in the solution. You can also make a TYPE424 contact using the GUI contact item if you do…
  • Hello JJJ Nonlinear shells for the internal solver are not a priority, sorry. I'm surprised at that 60% error. You might need more refinement with the CCX shells. Also make sure the mesh is quad-dominant, not linear triangles. You can also use th…
  • @Sebastianmaklary I should add that you can confirm the weights by saving as Mystran format then looking at the RBE3 entry it generated.
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