Victor

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Victor
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  • I can't offer much help with that except to say that it runs IronPython from a dll like you found so Mecway.exe is the python interpreter executable. You can probably find ipy.exe somewhere else and it might work with Mecway but it won't be able to …
  • It looks like you already have materials named Stahl and Rotguss which are conflicting with the new ones. Use different names and remove any Mecway-defined materials from the components that are getting the new plastic material. Don't forget to ent…
  • You can enter a piecewise stress-strain curve in CCX -> custom model definition. See the manual section 13.1 Custom model definition for an example using 3 points.
  • A later one is here. https://mecway.com/forum/discussion/comment/4255/#Comment_4255
  • I'm not sure if you're using the internal solver or CCX. prop_design's answer is more relevant to CCX where thicker shells can perform better because they're expanded to solids. With the internal solver, thinner shells are usually better and "thin"…
  • Hello rpalinka Are both parts still fully constrained after removing the displacement? If not, there may rigid body motion preventing it from finding a path to a solution. Some ways to solve it: Add a constraint though an artificial low-stiffness …
    in rpalinka Comment by Victor August 2020
  • The CalculiX .inp format is almost identical to Abaqus and Mecway can export that as well as import simple files. Some of the people working on Mystran and pyNastran are trying to make a converter from .inp to .bdf/dat. But at the moment, I don't t…
  • Thanks for the suggestions Clearline and Sergio 1) Unlikely because of consecutive node numbering which makes this tricky. 2) No. Although you can get it to save the solution to a separate file with Analysis -> New save after solve. 3) I'm expec…
  • Yes, it may be correct that the final converged step is the limit of stability. From your list of times, that wouldn't be 9.771 s because it subsequently backed off from that. However, I'm not sure that's safe. Some other things to consider: Don't…
  • No, sorry.
  • For case 4 Solution -> Surface integral then select heat flux X and External_surface and click Evaluate.
  • Memory use can increase steadily as you use it. I know of at least two reasons but haven't ruled out the possibility of a memory leak: 1) The memory reported by Task Manager is sometimes not actually used and is immediately given up when an applica…
    in Saving RAM Comment by Victor August 2020
  • Hello Albert 1) You can write a script using the API function solution.mass(element_id) 2) I don't think so. You might have to re-implement that calculation yourself. Don't use the specific heat variable in the solution formula because it doesn't …
  • Hello DavidK It already sort of does what you're asking - Named selections and loads and constraints that are created from geometry surfaces (right click a surface in the geometry view) persist through remeshing. These are indicated by in the out…
  • Thanks for asking. I know this would be very convenient and it's on my list for features but I can't promise when.
  • No, sorry. You should be able to do it manually though by solving once to find the time at which the required temperature occurs, then a second time with a time-dependent internal heat generation that includes a step function (heaviside()) to turn …
  • Possibly. You can get position dependent heat flux on a surface by putting a layer of non-conductive shell elements on it (can be generated with Mesh tools -> Hollow) and using the existing position dependent internal heat generation on them.
  • I changed it to an isotropic material and the deflection is almost the same (0.3 inch) with refinement. That agrees with the formula here https://www.engineersedge.com/calculators/parallelogram_plate_edges_fixed_15142.htm which says 0.35 inch. So i…
  • Hello Peter. Some thoughts: Each layer has the same stiffness in two orthogonal directions but the layers are all orthogonal or parallel to each other so there's no effect of having multiple layers. Maybe that's because this is just artificial data…
  • The file I see has only a single element with all nodes constrained so the displacement is 0 everywhere. I changed it to make it like your description but get 1.3 inch maximum displacement magnitude, not either of the solutions you described. Sin…
  • Not sure if you uploaded the right file. This one has a zero solution.
  • Is there any gap or initial penetration there? *TIE ignores surfaces that are too far apart while the default option allows that. Or any error messages in the output?
  • Import doesn't really work better than Open, it just doesn't show the error messages. Sorry for the frustrating crash. I'm not sure quite why it happens but I'll fix it for the next version (14). Here's my conversion of pret3.inp to .liml. Use Too…
  • Hello Jalal 1. Your first problem is tricky. Mecway has no automatic tool to merge disconnected elements like that. Usually, you'd start building the mesh with those details in mind and have nodes positioned for them. Otherwise, you can correct it …
  • Yes, you can uninstall MKL afterwards.
  • More basic ways: A) The Python scripting is probably no use because you can't use it to set contact stiffness yet. Command line parameters Make a copy of the file for each parameter value like model1.liml model2.liml etc... In each one, add a A…
  • It's often easier to use solids for bolts instead of beams. You can connect the underside of the bolt head to the surface with bonded contact. If you make the solid mesh with a plane through the cross-section, you can also use CCX's *PRE-TENSION SEC…
  • The order is unspecified and might be something to do with the file system. I'll change this to alphabetical order in version 14. Thanks for bringing it up. Maybe use subdirectories to group them?
  • The source files included with Mecway 13.1 are also incompatible with newer MKL versions. Here is an update of the complete CCX source code package that incorporates the above changes as well as making it compatible with current and hopefully future…
  • It won't happen in Edit -> Select faces or Select elements mode. Otherwise, no.
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