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Victor
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Oh, it seems like t should be in minutes for the ISO 834 formula. If so, then use this instead: 20+345*log(8*t/60+1)/log(10) Which looks like the graph attached
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Last time I looked into 3D Connexion, their SDK didn't work well with .Net, which Mecway uses. Things might have changed, so I'll try again sometime in the future. Quite a few people have asked for this from time to time.
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In the formulas, log means log base e, so change it to 20+345*log(8*t+1)/log(10) The next version will show this in a graph as attached, so you can more easily check it. To output temperature and time for just one node, make a node selection contai…
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Time dependent convection and radiation work correctly in version 4 beta despite the error messages. This will be a properly supported feature in the final release of version 4. Two example files are attached. The convection has a very high heat t…
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Hello gemada It looks like you might be able to use a time dependent ambient temperature with convection and radiation in version 4 beta. I haven't tested this feature, but it might work. You would certainly need to verify the correctness yourself.…
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2. I'll include this in a future version since other people have asked for it too. Thanks for the suggestion. On second thought, using conduction instead won't give accurate results and will probably be difficult to set up since you'll need to modi…
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Hello gemanda. 1. It uses the finite element method as described in common textbooks. It's probably the same as ANSYS and most other thermal FEA software. 2. The reason for no change between the two models is that the temperature constraint on the…
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Yea, I don't think these elements is actually wrong, just quite distorted. Mecway shows an error (red X) if the element is so distorted that the solver will fail (negative Jacobian determinant, non-physical shape like self-intersecting/negative volu…
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Thanks for the suggestion about buttons. This would need to be configurable because most people won't need them. I'll keep it in mind for a possible future UI redesign. Seeing the lines through the faces is certainly a problem with small elements. …
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Unfortunately not. At least not yet. The closest thing would be generating models programatically by writing a .liml file and starting the solver with the command line. There's an example that generates .liml files from an Excel spreadsheet in the S…
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Thanks for the detailed comments VMH OK to reinstating the isometric view button. 1. It only does named selections for now, not components. This should be enough to address the problem of filtering the results in the table. I realize having compon…
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The *BOUNDARY keyword defines fixed displacements. Here "xface,2,2,1" means constrain the nodes in xface so that dof 2 (y-displacement) has the value 1 m multiplied by the amplitude. The amplitude ramps up linearly from 0 m at time 0 to 0.004 at ti…
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Mecway's own solver can't do non-linear analysis on this because it has non-zero displacements. Instead, I solved it with CCX and the solution is very different from the linear solution, so you definitely need to use a non-linear analysis. The stre…
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Was this originally a .liml file or .inp? If .inp, then I agree with prop_design that units don't look consistent. If it was .liml, then kg/cm^3 is OK. [EDIT: Except 8kg/cm^3 is much too high for steel - now I see that's perhaps what you meant prop_…
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I don't think you would need to define the complete arc shape - just put an initial displacement on one node, say in the middle or wherever the load is applied to bend the pole, and CCX should solve that to bend the pole. Then you can tension the fa…
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Thanks for the suggestion about node selections through CCX. It's not entirely trivial because CCX sometimes changes the numbering but I'll see how it goes. That file doesn't solve correctly with the Mecway solver because of the non-zero displaceme…
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I don't want to have it store two sets of results in the same file because that starts to become a kind of file management task which would add complexity and need to be learnt without adding much power. Hopefully just saving two copies in different…
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For strain and plastic strain, I'll look into having them turned on by default for nonlinear. Thanks for the suggestion Sergio and VMH. You can add another step using the custom step contents by inputting something like this: *END STEP *STEP,NLGEOM…
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Good points there prop_design. Screen space is a tricky one and I'll definitely take that into consideration. Your suggestion of customization is probably needed already and could deal with conflicting requirements. Non-regular users definitely need…
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Can you clarify what you don't like about ribbons? MoI's UI seems quite similar to a ribbon, at least in the sense of having groups of related buttons and labels under them. Mecway does look dated and the menu-and-toolbar UI came at a time when mos…
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I can understand. When things mysteriously don't work, you can't know where to look and it easily gets worse. I'll make sure this unit issue is clarified in the final release. It's an unfortunate difficulty that's always present interfacing between …
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VMH: The factor of 1000 in stress looks like it's because the load was also off by a factor of 1000 (1.864e4 lbf/in^2 vs 18.6 lbf/in^2. Any time Mecway converts to or from an .inp or .frd file, it assumes that the file uses the m,kg,s system. Howev…
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Yeah, ribbons are important for credibility :P I think they can be done both well or badly. I'm conscious of the too many clicks problem (MS Paint) and will certainly try not to make things worse for the overall experience.
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I notice you changed the "equivalent plastic strain" (not effective as I wrote earlier) from 0 and 0.198 to 0.002 and 0.2 respectively. Is this because of the "equivalent" part? From what I understand, you should subtract elastic strain from total s…
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Here you go. I deleted the existing material and added a custom model definition section with a plastic material for bilinear hardening like this. I also doubled the load to make it exceed the yield stress in some places. *SOLID SECTION,ELSET=Meshe…
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Yes, this model is set up the way I would expect. However CCX seems to have the same limitation as Mecway in not allowing constraints on MPC slave nodes. I tried to work around it by extruding a thin layer on the SLAVE_NODES surface so they're not t…
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VMH: I'm surprised at such a big difference. I'll have to specify CCX 2.8 as a minimum or include those alternative names like DISPR instead of DISP in .frd files. No OK and Cancel button on the custom model definition window is a bug. Thanks for …
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Sergio: 3 and 4) I have the philosophy that all the data should be defined in one liml file as much as possible. I realize that some people prefer/need to have multiple files so different tools can operate on them, and to manage unwieldy/changing m…
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Picture for my previous post.
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Rhoka: I think the .frd file you posted is faulty. The CGX 2.8 manual says the field variables should be in the E12.5 Fortran number format. That has 12 characters in each number. But the negative numbers in this file have 13 characters. The attach…
