Victor

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Victor
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  • Oh. I have no idea doing the other installs fixed it or some other effect. But it works so great!
    in Mecway 24 Solver Gives DLL Error Comment by Victor March 15
  • 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…
    in Mecway 24 Solver Gives DLL Error Comment by Victor March 15
  • 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…
    in Mecway 24 Solver Gives DLL Error Comment by Victor March 13
  • 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…
    in Mecway 24 Solver Gives DLL Error Comment by Victor March 13
  • 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.
    in Mecway 24 Solver Gives DLL Error Comment by Victor March 12
  • I used Node coordinates -> Coordinate system = Cylindrical (Y axis) and set the radius.
    in Problem with pressure distribution Comment by Victor March 12
  • 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…
    in Problem with pressure distribution Comment by Victor March 11
  • 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…
    in Mecway 24 Solver Gives DLL Error Comment by Victor March 11
  • 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…
    in Problem with pressure distribution Comment by Victor March 11
  • 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…
    in Mecway 24 Solver Gives DLL Error Comment by Victor March 11
  • 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…
    in Nonlinear Static 3D with Beam Elements Comment by Victor March 7
  • 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…
    in Large deflection solve difference using 3D static and 3D nonlinear static solver. Comment by Victor March 7
  • 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…
    in Large deflection solve difference using 3D static and 3D nonlinear static solver. Comment by Victor March 6
  • @Andrea version 20 had speed improvements for the internal solver.
    in Version 24 Comment by Victor March 5
  • A newer Gmsh won't help because the solver doesn't touch it or need it. I wouldn't be modifying anything in Mecway's Program Files folder though. It might interfere with uninstalling or something else. I'm concerned about the digital signature. If …
    in Mecway 24 Solver Gives DLL Error Comment by Victor March 4
  • @Sergio I see what you mean now. The existing shells and beams don't work with nonlinear large displacements and upgrading them for that isn't trivial. That's the main work needed to make the internal nonlinear solver worthwhile, in my opinion.
    in Version 24 Comment by Victor March 3
  • Sorry for the trouble. Some ideas: Does this happen with any model, such as the included samples? Confirm mecwayd.dll isn't corrupt by checking its digital signature. Right click the file, Properties, Digital Signatures, Details. It should say "Th…
    in Mecway 24 Solver Gives DLL Error Comment by Victor March 3
  • After looking into it, it turns out it's actually a bug in Mecway not being properly updated to a change in CCX 2.21. With contact and time steps, Mecway generates an extra *STEP section to work around an unrelated CCX bug. That extra *STEP section…
    in Temp issue when used with contacts Comment by Victor February 29
  • Oh. This looks like a new bug in CCX 2.21. Version 2.20 solves and the contact seems to work OK, so you might need to change to that.
    in Temp issue when used with contacts Comment by Victor February 28
  • The warning about shell thickness is a new bug, sorry. It's not correctly reading the laminate thickness. Thanks for finding it. Laminates, shell offset, and element orientation aren't supported for bucking with the internal solver. You would need …
    in Defining shell properties in MW internal analysis Comment by Victor February 28
  • Thanks for all the screenshots @Sergio . Always good to hear that features are useful or not. @Sebastianmaklary and @cwharpe too. The internal nonlinear solver is waiting on ice for a time when I can add some useful alternatives to CCX, particularl…
    in Version 24 Comment by Victor February 27
  • No easy way, sorry. You'd have to write the *GAP card yourself which would mean including all the stiffnesses yourself too. Maybe let it generate them without the clearance, then copy and paste into custom model definition with the clearances insert…
    in Compression Only Gap Clearance Comment by Victor February 21
  • Guido has implemented fixes to to most of the same bugs I did but just after the release of 2.21 so they're only in the Github source at the moment. According to my understanding of GPL 2.0, nobody is supposed to redistribute CCX compiled with Pard…
    in Version 24 Comment by Victor February 19
  • Hi prop_design. Good to see you again! Good point about symmetry. I don't like to add redundant features and this does look like one. In most cases, the new symmetry doesn't do anything you couldn't easily do with frictionless support or displaceme…
    in Version 24 Comment by Victor February 19
  • Yea, you need 2 equations and if it's at a funny angle, you'd have to do a bit of maths to work them out. Or maybe avoid that by putting *TRANSFORM on the nodes so the DOFs are aligned with the spring. In that case, you might as well write the equat…
    in Nonlinear SpringA Comment by Victor February 16
  • @JohnM For small displacements, you can use *PRE-TENSION SECTION on a beam in series with the spring but the only way I could find to set it up is quite fiddly, especially if the spring isn't axis-aligned. A truss element with thermal strain would …
    in Nonlinear SpringA Comment by Victor February 16
  • This is the sum of the magnitudes, rather than the magnitude of the sum. I realize that's probably not what anyone would want and it recently tripped up someone else. You have to calculate the magnitude of the sum by hand, unfortunately.
    in Interpretation of the reaction forces Comment by Victor February 2
  • @Hooshang not really, except deleting everything else and saving it.
    in Model of deformed part Comment by Victor February 1
  • http://dhondt.de/ccx_2.20.pdf
    in Multiple Material Properties Comment by Victor January 27
  • If you're importing it as separate STEP files, each one gets it own component and you assign materials by component. Right click on each one and choose Assign new material if they're all different. If they're all in the same component, you have to …
    in Multiple Material Properties Comment by Victor January 27
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