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Victor
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Thanks for the suggestions. Both of them are already on my list and have been made before, so that helps my chances of doing them. But probably not for version 5.
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Yep, you can use the spring-damper mechanical material type on a line2 element in Mecway to make a SPRINGA element for CCX as shown in the attachment.
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I see.
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Hi apadzak Could you please try opening the .frd file in the MecwayInstance64574871\Ccx folder you attached in a previous message? That seems to be a correct file and I can open it OK, so it looks like CCX is working correctly, but apparently your …
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Hi Tim I hope to do something like that for future versions, but probably not v5. A few people have asked for it. Can you please clarify point 4) What are the use cases for using only some of the DOFs? Can that be satisfied by connecting the singl…
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That works fantastically kwip! This looks like it'll be a good solution until we somehow get to the underlying cause. Thanks for all the work you've done on this.
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This is kind of curious. The .frd file is in there under the Ccx folder in your attachment and I can open it OK and it seems to be a proper .frd file. Can you please try opening it and see if that works? Also, could you have another go at the tabl…
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I tried the batch file with one of them, not sure if it was yours or CalcuilXForWin's from Sourceforge and it didn't help. Did it work for you?
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This problem with some binaries happens when there's no output window. So these binaries work in a command prompt window but Mecway doesn't create a window for it and it fails. Version 5 will include a fix for this, either showing an output window o…
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I see the windows layout problem and should have it fixed for version 5.
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.sta type output is on my list but I can't promise. Also, it might end up parsing the increment and iteration counts from the main output instead.
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Hello Apadzak, could you please post the .frd file that Mecway is opening to display those incomplete results? You can find it in %temp%\MecwayInstance#######\Ccx after solving. There is a problem that causes results not to be read correctly which …
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There's a further bug. Opening .vol files through File->Open or ->Import scales the dimensions wrong. They're scaled down by 1000. Please use the Netgen .vol format with care until version 5 where it'll be fixed.
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v3 looks OK.
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It turns out this problem happens with File->Import but works OK with File->Open which VMH used. This is a bug and thanks for finding it prop_design. As a workaround, you could open it, then save as .liml, then import into another model.
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Automesh 3D should do it. Some ideas: Make sure it's a single closed solid with no cracks or internal surfaces. (View -> Open cracks) All the elements must be oriented the same way (+W axis all outward or all inward). You can try surface mesh …
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Thanks kwip. This is a great resource. I can confirm that ccx_2.9_MT.exe solves the problem of "*ERROR in openfile: could not open file XXXXXX.dat" which happens with the CalculiXforWin 2.9 on SourceForge.net when run from within Mecway. It's also…
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This feature that will be in the next version (v5) for static analysis. You have to define the electric field using electric potentials or charges. I'll contact you privately about it.
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OK, I'll add it to the list. It might end up as a new kind of contact rather than released DOFs.
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Before meshing it, put the lines that define the holes in a different component, then the holes will end up in that component after meshing too so you can easily select and delete them. To move the elements to a new component, select them, right cl…
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Great example of how terrible the linear elements are for bending. Here's the same mesh but with a tensile load instead. Now they're all about the same.
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Thanks for the suggestion VMH You can release rotations at just one end by applying it to one end face of the beam element. That's sometimes a bit tricky to select. Either: A) Select the end node then switch to face select mode or Turn on Show ele…
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From the CCX manual, it seems to be about an order of magnitude more than the slope of the pressure-overclosure curve. I think I've used the same value for both. That should at least be a useful starting point.
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I should have the visible line bug fixed for version 5 without the need to tweak any values. I'll contact both of you privately about this soon. This thread's starting to cover quite a lot of varied things and could get hard to follow so please bri…
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That's odd VMH. 150% works alright for me. I'll have to study up on this to find out why it's not consistent. Can you show me the dialog box with the scaling settings? Also, what version of Windows is it? For the mesh lines showing through the face…
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Sorry I forgot to respond to that. Probably not unless there's a very important need that can't be done another way. I'd like to add some element quality metrics which might use Gauss point stresses though. For now, you can get some idea of stress e…
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I understand about the cursors. It's going to be a tricky decision. More options means more time wasted understanding all the options, and more risk of problems from setting them badly by accident. Hopefully I can find a nice way to do it, perhaps i…
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VMH, your point 2 is absolutely the most important advice for anyone new to FEA. By far the most common problems I see are caused by that. I'll just restate it here: - No mesh convergence study = no estimate of error = probably wrong. - Peak stres…
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Those are some good points I didn't think about. CCX's node-to-face contact has a SMALL SLIDING option to tell it to search for contact pairs only once per increment. Face-to-face contact (the default, and what Mecway's Contact (CCX) exports as) see…
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That's an interesting idea for a feature "mesh selected surfaces". For now you can still do it by meshing all the surfaces then deleting the ones you don't want. To aid in deleting them, you can make a named selection of the faces to keep, then swit…
