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Victor
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I don't quite understand. Do you want to transfer temperature from the solution to use for thermal stress? Is it piezoelectric for voltage output? Or temperature dependent electrical properties? The file you sent has the same number of nodes in the…
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@cwharpe Mecway has a new formulation for hex8 (incompatible modes). The old formulation (standard) is over-stiff in bending so it's hopeless for this type of problem. The new one not as bad still somewhat over-stiff for high aspect ratios like this…
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Nonlinear quasi-static with an initial imperfection can be more accurate than linear buckling and allows you to include contact and explore the sensitivity to imperfections.
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They're not really disconnected. At sharp corners, CCX connects expanded shell elements with knots (MPCs) instead of shared nodes, so they still transfer forces normally.
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It seems to have 4 parts but not in an assembly. Maybe you could turn it into an assembly using CAD then either open it directly if that works, or use File -> Split STEP assembly. In the next version (29), the Split STEP assembly tool will be a…
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Hello brandonman. Unfortunately, the 3D shapes of beam elements are only there for display and there's no way to export them.
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Sorry about that. You don't need to feel like a goofball since Mecway makes it very unclear why it's not working. There are quite a lot of reasons each solution variable can not be there and the "What's wrong?" message only identifies two of them, w…
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Hello Disla Regarding axisymmetric element faces, I don't want the rest of the GUI to interpret anything defined in the CCX branch because it'll become confusing as to what things it understand and what it doesn't. For mass flow rate at end nodes,…
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@JohnM sorry, I grew up with Meccano so I might be more helpful if you want to model stabbing yourself with a screwdriver :P
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@JohnM I'm not quite sure how Lego clicking works but I suppose you can get part way there with an interference fit and friction. Perhaps it's hard to achieve the right fit due to discretization of the mesh? OpenRadioss's /INTER/TYPE24 which Mecway …
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@cwharpe They're actually MPEGs. Change the extension. @JohnM quite right about too much fun!
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If it's axially symmetric, not just cyclically symmetric, then yes, it would be better to use symmetry constraints on the two surfaces. Frictionless support is OK too but gets risky if there are shells or slight imperfections in the mesh because tha…
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You can define a temperature dependent material by entering the *MATERIAL keyword block in Material properties -> CCX. See the CCX manual for details of how to write that. For time dependence without temperature dependence, you can use temperatu…
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There isn't a fluid material (except for acoustics), but you can approximate a compressible fluid using a solid with very low shear modulus. Use the orthotropic material type to define shear modulus separately from Young's modulus.
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It might be better to ask this on the CCX forum https://calculix.discourse.group/ . Mecway doesn't really use separate STEPs much.
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Unfortunately reaction forces (and external forces) aren't available with dynamic response with the internal solver or CCX, but only with OpenRadioss. OpenRadioss via Mecway doesn't currently have line pressure, pinned support, or constraint equatio…
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Before solving, define a named selection or component with the faces or elements to use. After solving add one of the mean or integral items and choose that named selection / component and the field variable to integrate or average over it. They're…
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It's probably slow because mw.component_elements() searches all elements to find ones belonging to the specified component. When you have a lot of components, it should be faster to iterate over all elements once and accumulate the number for each …
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At each node of an element face, it evaluates the following integral using Gauss quadrature: i is the node. N_i is the face's shape function for node i. phi is the heat flux you specified. If more than one face shares a node, Mecway sums the h…
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Not yet, sorry. I'm not sure the best approach. I hope to avoid another global parameter and prefer to find a suitable fixed value. There's the Arpack default that the internal solver uses but I'm concerned that might be too small for some case in C…
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Here is 28 beta with the extra parameter: https://mecway.com/download/mecway280_Beta2.msi
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Yes for version 28.
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The internal solver's beams assume shear center = centroid, so they're not really correct for asymmetric sections. The general section doesn't necessarily correspond to any rectangle though because you can define I and A in a way that isn't a rectan…
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As shown in this picture
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Interesting idea about open-ended edges. I wonder if there are cases where they'd still be useful though, like a square to round transition.
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Thanks for the suggestions everyone. Looks like a good way would be: Top priority: Global text note field that gets written to the top of the CCX/OpenRadioss input files too. Lower priority: Configurable title block Lowest priority: Text notes on…
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It doesn't currently have any functions to select things. Do you want to select them then exit the script so that selection is available in the GUI, or do some script things on the selection? If the latter, then you can keep a list of faces in the s…
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A few other issues besides the collapsed hexes Sergio identified: 1. Nodes of the slave surface, which includes the axis nodes, typically can't have constraints. They don't need them anyway because they're tied to the master surface. 2. An excepti…
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There are still only 3 elements around the 180 degree cone at the vertex so it's still coarse/highly curved there. To be honest, I never pay attention to the output of Netgen, nor understand it. It might just be saying that it found a special case …
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Sorry about that. I don't know why it got stuck. Might need a page reload or cache clear. I've added the .FCStd extension to files allowed for attachments.
