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Victor
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@Sture @kuhl @Sergio I've made a patch with an updated version of MKL. The existing one is 10 years old so that might magically fix the problem. If you'd like to use it, download from https://mecway.com/UpdatedMKLForMecway18.zip and extract the two …
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It should respect the units in the file but might display them converted to some other unit that you've been using. If they're not converted correctly, could you attach an example .unv file and tell me what software made it? Some software writes th…
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Apply it to the faces on the inside of the tank instead of the outside. If they're difficult to select, you might use cutting plane (slider on right of toolbar) to expose some of them, or Edit -> Invert selection.
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It's according to the element node numbering. Solid elements made by Extrude or Revolve have T in the extrusion direction. Other than that, I usually just guess and undo when it's wrong. I know it's a pain, sorry.
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I'll add that to my list.
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There isn't really a remote force or load distributing node-surface coupling like RBE3. CCX has that (*DISTRIBUTING) but it's sometimes wrong so I don't recommend it. Instead, you can apply the load to the surfaces around the edge and also apply a …
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They use the original element shapes. The internal solver produces derived field variables (stress and strain, not displacement) as both node averaged and at element nodes, so the integral tools use the element node values in those cases. I'm not s…
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I'm not sure if it works or not. But you also pointed out in that thread that plastic materials get 5 integration points through the thickness so it looks like some are already closer to the surface than the usual 2 for elastic materials. I agree s…
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Cool. I wonder if you could check if other settings get saved properly? Maybe it's reading the file but not writing to it?
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I don't know why it shows an R there and if that really means it's B31R or not, but regarding the error, you have to refine the mesh with CCX beams, then it approaches the correct value.
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Yes, like this between and : anywhere at the same level as the other elements.
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@harryvanlangen It sounds like Wine might not be storing or reading any of the settings which Mecway keeps in user.config that on Windows is usually in %localappdata%/Mecway_Limited. I don't know if that gives you anything to go on.
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A workaround to get integration points closer to the surface of shells might be to use laminate material with two thing layers at the surface since each layer has its own integration points. I've heard of this but not tried it myself.
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@disla OK
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I wonder if it is that compatibility not enforced option. From a quick search, it looks like that causes strains to be compatible between adjacent elements at the expense of displacements, so gaps and intersections can form. That's the opposite of w…
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I don't know what element compatibility means there or whether it would improve or worsen the frequencies. I'm leaning towards something being wrong with the Autodesk model, material properties, or dimension since there are very consistent results …
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The hex mesh is a slightly different diameter. I scaled it in X and Y by their ratio 1.0243277848911652 and now the 2nd bending mode is 20342.93 Hz compered to 20346.59 Hz for tet which is much better agreement.
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If it's a simple enough geometry (just a cylinder?) then you can make a quad dominant shell mesh then extrude (Mesh tools -> Extrude) to convert to hex20 dominant solids. Have you tried mesh refinement on the tet mesh? All solid element types sh…
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Since this seems to be a problem with workstationy computers, I'm wondering if it's trying to use too many cores. Could you set these two environment variables then open Mecway and solve it? MKL_NUM_THREADS = 1 OMP_NUM_THREADS = 1 Another stran…
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Any license problems should be communicated clearly, and not through weird crashes. @kuhl. Do you mind trying version 15 (https://mecway.com/download/oldversions/mecway150.msi) which was the last version that worked for another person who had these…
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Yea, it uses the impossibly high plastic strain of 1000 to ensure you never reach that because it's supposed to be an idealized infinite straight line. I don't think there are any problems with such a high value and CCX would linearly interpolate at…
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Looks like the reason those holes are faceted is "Fit midside nodes to geometry" is turned off for the two plates' meshing parameters.
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Nice picture. You can use radiation with CCX in thermal transient. There was some reason I couldn't get it to work right in steady state so I disabled that option.
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@JohnM, this probably won't help with your big models, but going up to 5+ layers thick of hex8 can get reasonable in bending, at least for elastic behavior. The idea is to make sure individual elements don't carry any significant bending load to avo…
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@disla, I don't want to add a plastic laminate option at this stage because I think being able to input the data in the GUI would add little value compared to writing CCX cards directly. Without a redesign of how laminate data is represented, there …
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Here's the same model converted to quad8. I did this by setting the Z-coordinates of all nodes to 0 then merging them, and setting thickness in the material properties.
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Excuse me, I'm normally all serious on here but that inventing the light bulb thing was meant to be a joke :P I assumed you were working on some sciency heater for x-rays or something.
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I saw that too. For some reason, the element isn't present in the .frd file. Maybe user elements disappear like that? Not sure but I think it's a CCX issue.
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Mecway automatically converts collapsed elements to their equivalent shape if one exists, so that's why imported collapsed hexes become pyramids. A way to look for missing internal elements is set the 3 view options shown in this picture. I delete…
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If it's because of a lot of iterations, making the nonlinearities more gentle can save a lot, like lower contact stiffness, higher tangent modulus on plastic materials, and "loose" parts constrained a bit harder with elastic supports.
