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Using a single bonded contact for many contact pairs should be perfectly OK. The solver breaks the slave surface down into nodes and the master surface into element faces so it has no concept of whether they are continuous or many separate parts. S…
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You can still use bonded contact in nonlinear with CCX but: - It's not available in the menu so you need to switch to Static 3D then back again. - It becomes *TIE in CCX, which requires the surfaces to be very close together, unlike Mecway's bonded …
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Hello Robert. Mecway doesn't have a hex automesher. Here are some other ways that might do: Make a surface in FreeCAD and export it (not the sketch) as STEP and import to Mecway. Under Meshing Parameters, check Surface mesh and Quad dominant. That …
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It's caused by the collapsed elements in the cap. They're hex8 but shaped like wedge6. I converted them to wedge6 using Mesh tools -> Correct collapsed elements. That has a side effect of removing their faces from the bonded contact so I also add…
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Hello kam33mitch, the file seems to be truncated. Could you please attach it again? If it has solution data, clear that to reduce the size - Right click Solution in the outline tree then click Clear.
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I agree it's tedious. It'll need a redesign at some stage. In the mean time, there's another workflow that might be a little easier, mainly because it doesn't require any renaming. 1) Right click a surface in the CAD geometry 2) Loads & Constra…
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Excellent video! I've added it to the Mecway YouTube channel.
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You're right, it is adding them! I'd bring this up on the CCX forum. I seem to remember it has a bug with OUTPUT=2D on beams too so I'd guess that's a little used and poorly tested feature.
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Thanks for describing the Abaqus CAE plotting. It sounds fantastic but Mecway probably won't have that for a long time because it would be a major new part. For now, it'll just provide the raw data so you can do those things with a spreadsheet. I'm…
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Components - yes. Materials - almost certainly.
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I wouldn't think so. The side effects I'm thinking of are geometric nonlinearities appearing when they would have been hidden in a linear analysis, and bonded contact behaving in a more restrictive way. In nonlinear, it becomes *TIE which doesn't al…
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It only appears in the menu when nonlinear or dynamic response analysis types are selected. I guess this is quite confusing and other people have had trouble finding it too. I did that because it triggers a nonlinear solve in CCX so it would introdu…
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Stefanos, you can do that using the Table tool - make a face selection of just one face before solving, then in the table, pick that to limit the nodes to the few nodes on that face. Sergio, that's a good idea about using reaction forces to show th…
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I see the same alternating stress by opening the .frd file in CGX. I think this is a CCX issue that you could ask about on the CCX forum https://groups.yahoo.com/neo/groups/calculix Bear in mind that OUTPUT=2D removes out-of-plane bending stresse…
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Hi Stefanos. Do you mean input load values and the output displacements listed together for each time step? At the moment you can export them separately if that's any use. Save a file as .inp format and delete everything except the *AMPLITUDE blocks…
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Using a fixed multiple of Youngs modulus, which is also suggested in the CCX manual, only really works when the geometry scale is constant. Here are two models with the same material properties, the same contact stiffness and about the same strains…
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Quick note. VMH is a different person from me
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Acknowledged the new 24-28. They all sound quite reasonable. It's going to be a matter of time and priorities what I get done. Thanks for suggesting these things that will surely help a lot of people.
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CCX outputs shell elements as solids by default. You can turn this off in Mecway by adding a custom step contents containing *EL FILE,OUTPUT=2D
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17) I don't like the accumulating selection because I want Mecway to be familiar to people without experience in any particular other software. It should be more like Windows Explorer which clears the existing selection when you click on something. …
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Hi Sergio. Comments: 17) I'd like it to behave more like Windows which everyone is familiar with. 20) I agree it's quite hard to specify local refinements. Some kind of mouse picking would be great. 18) I agree previews are good. The other detail…
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Here's the result of some tests. - Computer: 16 GB RAM, USB 3 external hard disk drive, Intel Core i7 CPU - All models are static 3D with hex8 elements. Hex20 elements use more memory for the same number of nodes and similar mesh topology. - Larger…
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I see what you mean. I'll try to put together something. You're right that it's not linear -with larger models taking disproportionately more memory and time.
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Memory shouldn't be an issue for the graphics. I had 16GB though and that's also what I've solved 1,000,000 node models with. That's a good idea about a table, though it does depend on the connectivity of the mesh - a cube uses more memory than a s…
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I should have mentioned it in this thread before - for large meshes, version 4's graphics are much faster than previously. So the 2015 comments about 100,000 nodes or so may not be applicable anymore. I just tried 1,000,000 nodes and it's usable but…
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Thanks for the suggestions Sergio and VMH. Many of them are already on my list but this gives them a bit more priority. A few comments: 4) You can open a 2nd instance of Mecway to view intermediate .frd results without it stopping CCX. Ideally, I'd…
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That's a good point. I'll word it more clearly. Probably either "User defined ..." or "Display ...".
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Thanks for reporting this bug VMH. It's newly appeared in version 4. I can't think of a workaround except don't open big files directly from the icon. It also reveals a more longstanding bug - it crashes when you turn on the display of node or elem…
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Here's a likely fix from http://superuser.com/questions/947391/windows-10-font-blurry-125-scaling 1) Right-click on the program icon (not the shortcut) and choose properties. 2) Click the "Compatibility" tab. 3) Check the box labeled "Disable displ…
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You can prevent these cards appearing from the outline tree with CCX -> don't generate keyword. I'm not sure if there's a right way to export .inp files. Mecway doesn't have a way to define no analysis so if static analysis is defined, then the …
