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Victor
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Yeah, it's the condensed DOFs appearing in multiple equations problem. For example, x displacement on node 61 is the condensed DOF in both these equations: ... Change the order so the 1st node isn't the comm…
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@sofien_73 What you posted looks OK. A likely problem is that the node-dof pair that's the first term in each equation is the condensed DOF and is not allowed to appear in any other equation, nor various other constraints. For more than 2 nodes, th…
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You can use View -> Open cracks which separates coincident nodes. Another thing I sometimes do is Mesh tools -> Merge nearby nodes and check the total node count to see if it went down, then undo. Doesn't show you where they are but does show…
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Yea, it could use a tool to combine them when they're equivalent.
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It's not possible with the same mesh since a single node can only have one value for each variable. You can disconnect the members at the connections, keeping the nodes at the same location and then join the nodes with constraint equations (all 6 D…
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Oh, that's an unusually high number of separate loads (thousands). Mecway's not designed well for such fine grained detail. As @disla said, it slows down the display. I hope to improve this in future though. It looks like a lot of items can consoli…
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That's what the "Graphics detail during navigation" setting does for things like load and constraint symbols, selected faces, and thick model edges. Contour plot resolution shouldn't be an issue during navigation because it's not regenerated then, w…
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As well as contour plot resolution, these are some options that can speed up: - Choose banded in Options -> Contour plot - Turn down Graphics detail during navigation in Options -> General - Turn off View -> Show model edges - Turn off Vie…
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The threshold angle for displaying the thick edges is 20 degrees, which is coincidentally the same as CCX's threshold for introducing knots in shells. However, the way they each measure angle on curved elements might be slightly different so they mi…
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I guess that's the reason Guido once removed the use of knots in some places like beam ends where they seem better. On curves like this, I wouldn't consider it a serious problem because with mesh refinement, the angle between elements will go down …
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It doesn't have a report generator, sorry.
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Haha it is too! It's been great knowing you for so long Anthony. And thanks for your help with those mind-bending inertial forces, Campbell diagrams, finding so many bugs, and providing me with motivation to implement many features. Your work with p…
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Yea, CCX would require a unique *TRANSFORM on each node for that. Mecway 24 has a new feature which does this - Symmetry in Loads & Constraints. *EDIT: *TRANSFORM allows a cylindrical coordinate system which looks like it might work for this. …
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That look pretty much right. To keep it simple, I would eliminate scaling for everything except one value like this: Thermal tress reference temperature = 0 K Density = temperature, like (-1e9,-1e9) and (1e9, 1e9) instead of (0,0) and (500, 373).…
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Another idea is to vary the density rather than g. With CCX, you can define density as a function of temperature (just make it a linear function using 2 density/temperature pairs), and apply a non-uniform temperature field (defined by formula) on th…
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From what I've seen with beam elements, if there's a knot where you apply a moment or rotation constraint, then it uses that instead of mean rotation MPCs. So my guess is this avoids the <90 degree limitation on mean rotation MPCs.
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Forcing a knot at the loaded end causes it to solve for all angles, unlike the 360/180 degree convergences failures without? I wonder what the disadvantages of knots are. Maybe they artificially constrain deformation since they supposedly only allo…
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Oh. I have no idea doing the other installs fixed it or some other effect. But it works so great!
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Thanks hooshsim, that's helpful. I have a guess what it might be. Would you be able to: 1) Download this replacement mecwayd.dll https://mecway.com/download/v24/mecwayd.dll 2) Copy it into Mecway24's (not any other version) installation folder, ove…
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Excuse me, the naming isn't that clear: v1.1 https://mecway.com/download/oldversions/mecway11.msi v2.0 https://mecway.com/download/oldversions/mecway20.msi v3.0 https://mecway.com/download/oldversions/mecway30.msi ... v9.0 https://mecway.com/downlo…
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Cool. That's at least puts some bound on what the problem might be. I know this is a lot of work, but it would be a help if you can try the intermediate versions to identify when it stopped working. Regarding 0 frequencies, there have been a lot of…
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The product keys were for individual versions then. I'll generate them for you and send by email later today. But it's not needed to try solving one of the sample problems to see if it crashes.
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I used Node coordinates -> Coordinate system = Cylindrical (Y axis) and set the radius.
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I get the same result (-9.41 kN) for both hex8 and hex20 with flat faces but it's much more accurate (-9.9994614 kN) with hex20 and fitting the midside nodes to the circular shape. I think the main source of error is that due to the faceted shape…
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Thanks. It looks like the files are OK and various functions from mecwayd.dll with different dependencies are all broken. I'll need some time to work out what to do next. Sorry for the delays. In the meantime, if you're keen enough, I wonder if you…
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Non-uniform loads are interpolated at a few points over each element face so there will be some discretization error when it's a nonlinear function like this. But it's odd that hex20 is worse than tet. Would you mind sharing the files, especially t…
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Thanks hooshsim. When you say "after launching Mecway", do you mean it showed the error even before solving anything, or in the solver as before? I forgot to say you need to click on the signature in the list that says "Mecway Limited" then the De…
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Hello hechtle The circles at the ends of the springs represent ball-joint type connections so there's a node that's not properly constrained and free to move laterally which will likely cause the solver to fail. You should use a single spring el…
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I see. Your model is also stopping at a similar strain to mine when I used linear material. I'd say you need to use a non-linear material here, such as *HYPERFOAM Sergio suggested. It's not in Mecway's GUI but you can define it with CCX cards. I t…
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I agree with Sergio that 30% is a lot, especially with a linear material where the results wouldn't be valid anyway. Here's a Neo-Hooke cube deformed into a mushroom shape before it failed. With linear material in non-linear analysis, it failed much…
