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Victor
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Instead of load cases, Mecway has Configurations which are the tabs near the top of the window. Each configuration can have different: * suppressed states for Loads & Constraints, Initial conditions, CCX items, and Tables * solution but …
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CCX has the capability of modelling radiation between surfaces. Last I checked, it was a bit complicated to set up by hand so it's something I want to add to the UI eventually. It could be that you have to copy the generate *RADIATE keyword block an…
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Though I don't know about CCX specifically, this is how I expect that error occurs. It would calculate the normal vector of the shell's surface at each node by doing the cross product of two vectors tangent to the plane of the shell, such as those p…
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If you use Mecway 12, there's a button on the solver window to select the element with the error. That shows a triangle element with an extreme aspect ratio making it look like a line, which wouldn't usually be able to solve. With version 11, use E…
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Good point. Yes, I'll add that.
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About the convergence graph. The data is taken directly from the .cvg file. To be honest, I'm not exactly sure how to use it since CCX has very complicated convergence criteria but I expect that for each time step (increment), the displacement corre…
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Thanks for testing things Sergio. Both kinds of refinement work OK for me using the default meshing parameters. A couple of ways it doesn't work: * If you specify a minimum element size in meshing parameters which conflicts with the refinement, t…
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Power density in the solution is currently only available for solid and shell elements. You should be able to extrude the line mesh into a single element wide strip of narrow shells.
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Great work Anthony. The forum somehow breaks Youtube links but maybe this will work PROP_DESIGN Screencasts: https://youtube.com/channel/UCj7CdqPJOXVV56J1m8zGbPw Mecway's channel also has howto videos from various people collected together. Mec…
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It has that but called r/min.
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Good point. I don't see why not.
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Here it is. I changed the last bonded contact's value and remeshed the parts with Fit midside nodes to geometry on all of them.
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This solution uses bonded contact instead of contact so it's not really the same problem. Lateral loads on the bolts will be distributed around the entire circumference of the hole instead of only on the side that the bolt presses against. So the st…
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Yea, ANSYS works out the contact stiffness automatically but here you have to pick a value. There's also a lot of trouble with CCX if a part is only supported by contact (not bonded contact). I'd guess that most of the support emails I get are about…
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That's intentional. An example of a use is line3 elements revolved to form a quad8 cylinder. Or a tri3 shell is easier to create manually than tri6 and can be converted later.
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It turns out that it fails if you open the file as millimeters but works OK as meters! That's pretty surprising. It seems like Netgen prefers bigger coordinate values (60 mm is sent to Netgen as 0.06). Here's the mesh I made anyway - you'll have to…
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No, sorry. You would have to build one from translational springs. Either make a moment arm with another beam element or, perhaps more elegantly, use a constraint equation to couple the rotational DOF of the beam element to the translational DOF of …
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I didn't have a problem meshing that with the default settings. Though with quadratic elements, turning off Fit midside nodes to geometry prevents some badly shaped elements appearing.
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The lines following *MATERIAL,NAME=YourMaterialName
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No need because it'll still be sharing the same nodes.
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What I find easiest is to extrude a small element (select a face then Mesh tools -> Extrude) and assign it a new material with low Young's modulus and apply fixed support to the new face. It ends up looking like this picture. The next version of…
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@Sergio > Is there a way that the mehs of the first part (from imported geometry) goes directly on the default component? I'm thinking it'll have to stay the way it is because it's hard to know the user's intent for that default component. If …
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The problem is in the the teeth part and their fixed support, but not the contact. I'm a bit surprised at that and it even happens when I delete the entire mesh except for a single element. But some elements are OK even though the look just as reaso…
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Since this is so thin, I think you should extrude the old surface mesh (Mesh tools -> Extrude) instead of using Automesh to create a volume mesh. By extruding, you'll get prism elements which are a little better than tetrahedra from Automesh 3D. …
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The *ERROR will be where it failed. CCX stops when there's an *ERROR, but keeps going with *WARNING. The view options don't affect how the contact is applied, as long as you don't select the edges of the elements. It should also work just as well w…
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There are lots of ways for convergence failure to happen, and unfortunately it's quite common with contact. Here are some general ideas: Run it as Quasi-static (in Analysis settings) and ramp all the loads using formulas (eg. 3*t instead of 3). Tha…
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That's incredible! Thanks for creating all those Mecway tutorials. Is SimCommons a business? How does it make money?
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I think you uploaded the wrong file since it has no constraints or contacts. *WARNINGs in CCX are common and usually harmless. My guess is that this wouldn't be a problem since a fully fixed surface can't rotate so maybe it doesn't need any MPCs to…
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Thanks for adding that but I'm going to have to get a bit ranty - Stress intensity is awful. It's apparently the same thing as stress intensity range, so good luck describing a range of stress intensities! Does intensity here have any common meaning…
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The internal matrix solver is already multi-core. I don't expect to make anything else use multiple cores. The graphics card shouldn't have much effect on performance because the bottleneck for all the slow parts of the graphics is the CPU/RAM. Tho…
