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Victor
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If this is not too simple, you could substitute the pin with pressure, force, or normal displacement (under frictionless support) on the arms and use fixed support or displacement constraints at the location where it's being pulled. I would use 3D w…
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I expect CCX will be more accurate. If it's treating them analogously to external force, then it should be accurate regardless of mesh density, but if it's using the temperature gradient like Mecway does, you need to check for mesh convergence by re…
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It may be a bit too rough to integrate the heat flux magnitude since it can include some component tangent to the surface or in the opposite direction which won't be counted properly. The error seems to be in the wrong direction for that though so …
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If you don't open the solver window, or press Hide, it can be much faster because of not displaying those messages. You can just open it when you want to check then hide it again. I'm not sure if that's still slower than CCX on its own though.
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Edit -> Create -> Element has an option for choosing the component. Most other tools that create new elements from existing ones (extrude, copy, etc.) follow the component of the existing element. But Quick cube, Quick square, Plate mesh, Cur…
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The internal solver uses either of two eigenvalue solvers depending on the size of the model: 500 DOFs or more: ARPACK's Implicitly Restarted Arnoldi Method which is similar to Lanczos since the matrices are symmetric (except for cyclic symmetry wh…
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You can store units in the default model by having some unused thing there with those units, such as a material with thickness of 1 mm. Then it will use mm as the default for new things like STEP file meshing parameters. I'm also wondering about ma…
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You mean to find the damped natural frequencies? Neither solver has that capability, sorry. I'm not sure why, other than perhaps it's difficult to implement and not widely needed.
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I think that would work. Or you could replace ccx.exe in Tools -> Options -> CalculiX with a .bat file that starts it. Then when you close Mecway, CCX should keep running. Beware though that doing these things will lose some data that's not i…
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Here you go. I made these changes: * Used Mecway's spring and damper materials instead of defining the CCX cards by hand. Those get generated automatically. * Changed the analysis type to Dynamic response 3D * Added density to the beam materi…
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Mecway doesn't participate in the solving with CCX so that memory is just what it uses for its internal data and things. If you're really tight on memory, you might need to save the model as .inp, close Mecway, then run ccx on that directly instead …
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It's for linear and nonlinear dynamic response 2D and 3D and both solvers. But it turns out there's a bug that disables the input for Nonlinear Dynamic Response 3D. Thanks for finding this! It still works but you have to change to one of the other …
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The next version (14) will have a stress-strain curve. Could you two, and anyone else here, tell me if you prefer the strain input to be plastic strain (0 at yield) like CCX does or total strain (yield strain at yield)?
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To create a spring and damper between two nodes: * Make a line2 element: Mesh tools -> Create -> Element. * Put it in a separate component: Right click the element, Add elements to new component. * Give it a spring material: Right click…
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No worries. There's a lot of things that can go wrong.
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_mod2 has two copies of the force.
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I've seen that happen occasionally too and don't have a proper solution. Changing the refinement around the hole edge such as with with Min. number of elements per curve can change whether it happens or not though. In my experience, the options ord…
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Thanks for sharing this.
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prop_design has a good point. It sounds like either the whole structure might be constrained too much or some members might be underconstrained causing 0 frequency rigid body modes.
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I don't understand how that would work, but if it's simply a matter of having ipy.exe installed with Mecway, that should be no problem. Is that all it needs?
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OK
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It's a bit strange because typically the lowest frequencies are the global modes. So make sure what's happening is reasonable for your structure and not a bug. Then to do it the "dumb" way, increase the number of modes until you can find the ones y…
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I don't know, sorry.
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Unfortunately, imported modules don't have the global variables and they aren't part of any library or module that you can import. A workaround is to add your own mw variable in the imported module from the importing module before using it, like th…
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If I understand you correctly, then no because it depends on the Mecway application running to access its internal state. Perhaps that would be possible by having a wrapper Python (even Python 3) library that starts an instance of the Mecway applic…
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Hello RICYTEACH The API is still limited to the types of operations listed in the manual but getting component names from element numbers and vice versa will be in the next version (14). There's an undocumented function for the path of the current…
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Thanks for the update. I've been a bit unsure of it because Guido said something wasn't right yet. Maybe that was just the shells?
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Oh, I see who you are now. Hello again! CCX allows you to chain several analyses together in steps which sounds like what you're asking for. But I don't think you need to do that because nonlinear dynamic response already includes buckling and pla…
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Hello Inq The more powerful way is to use Nonlinear Dynamic Response 3D as the Analysis type. But there are a couple of limitations: * The solution doesn't have acceleration so you might have to calculate that from differences in velocities betw…
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This feature often causes confusion and I'm not sure what to do about it. The pinned support is distributed over the whole selection using constraint equations and does what JohnM said. It only reduces to ux=uy=uz=0 for a single node since that has…
