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Victor
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Thanks for the suggestion. It's one of those tricky things where the common use is a special case. Joining the ends would make the behavior of the tool more unpredictable even if it's more convenient most of the time. So I'm not sure really.
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Those are the units for x,y,z used in the formula. Line pressure is force per unit length instead of area. You can use either on the edge of a shell with the internal solver but only pressure with CCX.
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I've found the limit is typically around 300,000 nodes with 16 GB of RAM. I expect you would be able to go higher though. You can delete half the mesh and solve to see if it succeeds. The closest things to contact for the internal solver are: * …
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That's one of the usual ways CCX exits when the model is too big. I don't think it can use all of 64 GB of RAM unless you compile it specially. Did you see how much it did use? It might be limited to 16 or 32 GB. 900,000 nodes could easily exceed on…
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Not sure. I hope that there's another way to identify improper meshes like an exit code or error message or something. That'd be easier from my perspective.
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I don't know how changing material properties would help with allocate failure but maybe that somehow keeps it under the limit, or maybe it was by chance? There's no special rigid body without defining it through CCX cards, but you could use a very…
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One of the corners is missing. But that is weird that it silently generates the surface mesh. I didn't know that was happening.
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Node 7179 is part of the the very first bonded contact's slave surface Pipe_to_Tape as well as Pipe_Exterior_Master. So that's why it fails. An intersection between 3 parts all having bonded contacts on their common edge is limitation that you can't…
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I found that ran a few iterations then exited without a solution on 2.11 single threaded. I guess you'd have to reduce the mesh size. A major area is the interior where it probably doesn't need to be nearly as fine as it is. You could also replace …
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Does the right hand image show thermal transient? It should be available. Here's a simple example that solves. However, this will only work in the same way that it does with the internal solver. To get radiation between surfaces, you'd have to modi…
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You would also need a gravity "load" and a constraint somewhere, such as fixed support on the bottom. You're also welcome to upload the file to make it easier to see what's happening.
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Look for multiple constraints sharing that node and see if they're either physically conflicting or breaking Mecway's rules. Thermal constraints include fixed temperature (one node cannot have two different temperatures at the same time) and bonded …
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I'm not sure why that's warned against. It might be that it sometimes generates solutions with time steps but I can't see that happening. It does seem to work OK if you ignore the warning though so as long as you're confident that CCX is alright wit…
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Hello Thanh. Could you give more details about what you're stuck on? Or you can have a look in Help -> Tutorials which shows examples of applying boundary conditions.
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It adds that option to the File menu, which presents files and folders as submenus for importing, rather than going through the File -> Import dialog box. It's a special feature for one customer who used Import a lot to save them navigating the …
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Do you really need to model both surfaces or can one be ground? If you only need one then elastic support might be OK for the stiffness. It's springs normal to the surface. If you need both surfaces then you might have to put individual line2 spring…
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In version 10 which is now in beta, you could do a surface integral (Solution -> Surface integral) over the surface of the section, then divide by its area to obtain mean normal stress. In version 9, you could make a very thin section and use So…
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Something's quite strange about those two strips that are bending in the wrong direction. I isolated one of the offending parts but still can't work out what's going on. Refining the mesh does solve the problem, but so does changing the thickness of…
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Yes. AlT+V, S now toggles element surfaces
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Oh. I understand now. Thanks! I'll fix that.
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There's now an option for the Gmsh scaling change in the Options window.
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Yes, shell edges have to be the slave. The should also be not much longer than the master faces to ensure all master nodes are connected to a slave node.
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Probably, yes. A slave node can only belong to one bonded contact.
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Here are the reasons I think. I only tested the stress at the X=0 edge which did get smoother with refinement.
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Yes. The 6 zero-Hertz modes correspond to the 6 rigid body degrees of freedom that a completely unconstrained object has. Displacements and stresses are only relative to each other so the scale doesn't matter.
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Error -9 from modal analysis can mean that density is 0. Make sure there are no red items in the outline tree. A zero density should be shown as the material name being red.
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Yes, only normal.
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The initial temperatures don't cover the entire model (all nodes) so some parts, especially the interior, are still at the default 0 K and the extreme temperature change between 20°F on the surface and a uniform -460°F on the interior causes error. …
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You may be only looking at the first time step which shows the initial state. Dragging the slider on the timeline at the bottom of the screen shows higher temperatures. You may also want to set an initial temperature on all elements instead of the …
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It's because one of the bonded contacts is connecting the Trace part to the opposite side of the pipe. If you click the bonded contact in the outline tree, it shows lines crossing the diameter. You should remove the opposite part of the pipe from th…
