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Victor
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You shouldn't need to move any files. Just select the .bat file from Tools->Options->CalculiX. Now I guess it's probably starting the .bat file and that may be failing to run CCX but hopefully shows some output. Click the CCX output button aft…
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That default component causes a lot of problems. I wouldn't mind getting rid of it entirely and have a component generated on the fly when it's first needed. A lot of implications for that though.
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All good suggestions. Thanks. Not sure when though.
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Yes, multiple selection or at least multiple deleting has been needed for a long time so I hope to do it but can't promise. As a workaround, you can open the plain text .liml file with Notepad to delete them. Each constraint looks like in this pict…
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That red box error message means the ccx.bat file probably doesn't exist. It may be installed in the \bin folder, not \ccx: C:\Program Files (x86)\bConverged\CalculiX\bin\ccx.bat I think changing this will get it working. Beware that using a .bat…
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Great soundtrack You will need to use "Solve with CCX", not "Solve with Mecway" because Mecway's internal solver can't do contact. Since there's no output from CCX, not even the copyright message, it looks like a problem starting CCX. There have …
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That's an excellent and very general technique Sergio. Also useful for models that won't solve.
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Suggestions: 1) Look for weird parts on the geometry preview. Your 2nd file here seems to have two surfaces overlapping which you can sometimes see from the random dots shown in the attachment. These usually indicate one surface showing through ano…
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All solid elements are correct as long as you refine the mesh until the solution stops changing much. The differences between the elements determine how fine the mesh needs to be to reach that good-enough condition. Generally, quadratic elements (h…
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It's not implemented sorry. Since CCX's frequency doesn't quite count steps the same way as Meway's decimation, it can't be mapped directly to it. Maybe it needs another option for frequency.
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It certainly would. I'm not sure why they don't already use the file's name but that's definitely something for me to look at improving.
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They two surfaces have to have the same node pattern so it doesn't work with automeshed parts unfortunately. This probably isn't something I'll improve in the foreseeable future because cyclic symmetry is a rarely used feature.
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These are a bit tricky. Contour plot resolution in particular. It was persistent in version 4 but several people turned it up to maximum then wondered why the display was so slow. It needs a way around this problem because the link between the resol…
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I agree about keeping incomplete solutions. The internal solver already does that and I hope to add it for CCX too. If you're starting CCX with a batch file, the cancel button won't end the process but if you're using ccx.exe directly then it shoul…
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Yes, I'd say so. I also found that changing the size of the room changes the frequencies of the other modes but not the 266.7 Hz one, further indicating that it's independent of the room's geometry, as you'd expect for a cavity mode. It's also a go…
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I don't think so because there's no *CONTACT keyword in CCX. Do you have complex self-contact where you can't predict the pairs in advance?
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I suspect the problem is that the pin has no forces or constraints to prevent it either rotating or sliding out of the hole. In real life, you'd expect it to just pop out as soon as it starts to bend because there's no friction and the reaction forc…
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There's a couple of formulas to convert damping ratio (ie 2%) to alpha and beta. The tricky part is that it only works correctly at two frequencies so you have to choose frequencies that are significant and tolerate increasing error further from the…
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I don't understand this much at all. What you say sounds reasonable about the frequency domain and that you'd need to do a bit of math to transform to real valued displacements which would be in the time domain. I think it only allows Rayleigh damp…
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Yes, uploading a file will be helpful. Contact often has strange ways of failing and needs playing around with to diagnose. One way is to use small time steps and ramp up the load. Then you might see that the final solution before it fails reveals …
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A restriction of Automesh 3D is that all the elements have to be oriented with their "upper" face in the same direction. If you turn on "Show element axes", it shows that one surface have backwards faces. You can reverse them using Mesh tools -> …
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It rotates about the center of a cuboid around the mesh. I realize there's a need for rotating about a custom point, especially when zoomed in. So that's something I hope to do for in future.
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Sí
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Mecway doesn't yet have any features for this, either with the internal solver or CCX. You'd have to define it by hand using *FREQUENCY and *STEADY STATE DYNAMICS steps. There could also be problems reading the solution data in because it's a functi…
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The time in nonlinear static analysis is only a pseudo-time which is used for counting but doesn't correspond to actual seconds. So the concepts of velocity and kinetic energy aren't really meaningful - the solution is the same regardless of how fas…
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I don't want to expose the node coordinate system concept in Mecway's interface but instead have directions directly included as part of the constraints. What feature of CCX are you using for bolt pretension? Is that the PRETENSION MPC or forces or …
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A modal analysis without damping doesn't provide that - there's no non-arbitrary way to scale the modes that would preserve any information. You would need a steady state frequency response where you impose a driving frequency and see what the sound…
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You can use a set of stress and plastic strain points to approximate the R-O curve. The example in the manual shows that. I'm assuming the plastic is isotropic despite the fiber reinforcement. Sergio would know more about materials than me though.
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It's a little simpler than that if you don't define the material in Mecway's own way too. There's an ELSET already there for each component so just add *MATERIAL, *ELASTIC, etc. See p126 of the manual ( http://mecway.com/manual.pdf ) for an example.…
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Centrifugal force isn't currently supported for exporting to CCX. See p122 of the manual http://mecway.com/manual.pdf for a list of which features are there. Instead, you can define it by entering the CCX command by hand in CCX -> custom step co…
