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Victor
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Version 31 available today works with assemblies and Alibre Atom3D. https://mecway.com/download
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Do you mean that the default way Mecway does it causes convergence problems in cases where using a rigid body your way doesn't?
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Yes, negative axial force means compressive stress as the neutral axis. Although, if there's thermal loading, the element might be lengthened (tensile strain) while having compressive force/stress.
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> 1-¿Do you mean all bases tighten to a REF and ROT Node (with Rigid Body not Kinematic) Yes. I think the rigid body is free to rotate independently of the structure. > You are creating two GAPUNI per node, but some nodes are missing the sec…
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That's cool. Pity it's so awkward to set up these combinations of elements For your last question, Mecway generates a GAPUNI element for each node of each face. So for one hole there are 12 faces * 4 nodes/face = 48 GAPUNI elements. Most of these …
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I intend to release a small update in January that fixes this bug and a few others.
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Gmsh is probably best for this. It's hard to work out the command to do it properly but I think a key is this: SetFactory("OpenCASCADE"); BooleanFragments{ Surface{:}; }{ Delete; }; That merges adjacent edges of surfaces at the geometry level b…
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I'm able to reproduce the problem. It's a bug in Mecway which makes it unable to import assemblies with Alibre Atom3D. Sorry about that. I'll get back to you about providing a fix.
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Hello ToddG. The 2nd line of that message comes from Alibre so it would refer to the Alibre license key. Some ideas beyond making sure an Alibre license is activated: Maybe you have multiple versions of Alibre Design installed and Mecway is linked…
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Yes, principal strain would be consistent with the other strain. There might have to be several of them if there are several separate strain tensors. I think strain energy density has a single definition but it can be calculated from different work…
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Thanks for that insight, Sebastian. Green-Lagrange strain is only there because it's the output from CalculiX. I don't know why CalculiX does that except that it's what it uses internally. Yes, option B would make Hencky strain the "default" and G…
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@German Formulas are for a bit of convenience doing things like this @Sergio Mystran isn't really better at anything than the internal solver, unless you prefer Nastran input deck format or manually add some features it has like CBUSH or full con…
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Fill hole Similar to purse.py by @cwharpe but starts with selected edge faces instead of nodes and should be more robust because of that. # Fills a planar hole in a mesh made from linear shell elements (tri3/quad4). # # 1. Select the edges of …
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There's a hack you can do. Edit the liml file and delete the elements with the surfaceid that you're interested in from the element. Then open it again and that surface doesn't appear. I'm not sure if these ID numbers are the same as reported by …
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Please create an Issue on Gitgub https://github.com/victorkemp/Mecway/issues or Thumbs-up existing issues you want too.
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I don't think there's a convenient way to change the /PROP/SHELL to /PROP/SH_ORTH other than re-entering all the elements and linking them to the new /PROP with a new /PART keyword.
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Oh sorry, you're quite right. I didn't realize that!
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Thanks for those ideas. The single precision starter and engine are separate executables. As you suspect, Mecway is hardcoded to run the regular double precision ones but you can rename them to trick it: double precision: starter_win64.exe and eng…
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Those messages from the mesher can be misleading and I don't know what they mean. Some that look like yours are normal and harmless. It sounds like you have multiple parts which often won't mesh. Use File -> Split step assembly then import the i…
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@disla good point. I'd forgotten about that! I should include a function there too, so best to use /INIVEL/AXIS instead.
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What about using formulas for the initial velocity's direction to make it in the circumferential direction at each node, like this: You might also need to manually add an initial angular velocity (/INIVEL/ROT) on the rotational DOFs of the beams …
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With the plastic model I've looked at (PLAS_TAB), the Poisson's ratio only applies in the elastic region and it seems to act like nu=0.5 as soon as plasticity kicks in. CCX does that too. Perhaps that's what's happening here?
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Mecway 29 can generate /DAMP using Rayleigh damping in Loads & Constraints. You can apply it to elements (which get converted to nodes for OR) or the whole model.
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If you're meshing a STEP file, define the named selections and boundary conditions on surfaces selected from the geometry view and they'll be retained through re-meshing. To do this with existing loads, select the surface(s) in the geometry view, t…
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Curved tet meshes with contact are pretty nasty. Is it causing irregular patchy temperatures on the contact surface?
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Yes, it uses MITC formulations by Bathe/etc. However, thin CCX shells aren't wrong, they're just less efficient, and that can be overcome with reduced integration. If you need nonlinear then CCX is OK. See these test results: https://mecway.com/for…
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The edge selections (edge_1 and edge_2) are working but it's failing because there aren't enough trailing blank lines in the /INTER/TYPE11 card. I found this error from the contact_11_test_0000.out file. Also I increased the displacement by 3000 so …
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It uses /INTER/TYPE24. To see the input file, click Monitor in the solver panel then Input file in the monitor. I'm not sure if or how TYPE24 handles edge contact. To use TYPE11, you would have to define the contact manually in OpenRadioss -> Cu…
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The material properties don't include the offset. It shouldn't show that because it includes other changes that have no fields in there (eg. axial-bending coupling) and different elements with the same material can have different offsets.
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You can't change the beam orientations in 2D. There used to be a switch for the 2nd orientation but I just recommend 3D instead for almost everything. That's a good idea about recalculation required. I'd like to add that to everything but not just …
