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Victor
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Comments
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It depends on your goal. If you want to find the stress in or right next to the weld, ideally model the plates and the bead itself using solid elements in a single mesh. You can also use bonded contact to join the weld bead onto the plates but it …
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After you use a unit in a model, it should remember what you prefer for other values with the same quantity. You can also create a starting model that has a dummy material with the units you want. Then if you build a new model off that, new material…
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No, you shouldn't need both. The thickness in the material properties is for shell elements and is ignored for solid elements. There, you would define thickness only by the geometry (node positions).
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Yes, the animation briefly stopping when you move the mouse over the graphics area is normal. It's also a bug and I'll try to fix it for the next version. Thanks for pointing it out.
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It doesn't currently keep the node selections because any shell or beam elements will cause them to be renumbered when they're expanded in the solution and that's a little harder to keep track of. You should be able to work around it by making an el…
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Mecway doesn't have a tool to fill in holes with mesh. If you just select the nodes on the edges, then the Merge nearby nodes tool will only affect those nodes.
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Mecway doesn't have a way to define node coordinate systems other than defining *TRANSFORM by hand. Is your aim to get a plot of the radial component of displacement instead of the X,Y,Z components? This sounds like something that would best be done…
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You can highlight free edges with Tools -> Labs -> Find non-manifold shells. If the Labs menu isn't visible, turn it on through Tools -> Options -> General -> Labs. I'd like to make this into a proper feature eventually. JRP, can I …
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Keep in mind that since it's so slender, there will be stress stiffening effects here, like a catenary. So a linear calculation won't be accurate. Instead: Change the analysis type to Nonlinear Static 3D Change the solver to CCX Unsuppress the …
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Another way should be to make each tube a separate part without the hole and join them with bonded contact. Make the edge "faces" of the end of one tube the slave and the surface of the other tube the master.
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Yes, it's just because it's a rarely used feature that's not implemented yet. You can still enter *EQUATION cards under CCX -> Custom model definition.
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I've addressed this privately now but for anyone else with the same problem - no graphics appear at any point - only Windows controls: Start -> Run -> dxdiag Click the Display1/Display2/etc tabs and make sure "Direct3D Acceleration:" says "…
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Yes. You can define normal pressure as a function of (x,y,z,t) in Mecway versions 4,5, and 6 using a formula as shown in this picture, but only with the internal solver and not for CCX.
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That's a good question. I don't think it's really a buckling mode. It appears to be the solution of the static solve that CCX does first. I'll need to look into whether this should be suppressed from the solution. Perhaps you could say the very firs…
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Dave: I converted each unit to its base units such asW/m^3 = kg/(s^3.m) then replaced m with μm, getting kg/(s^3.μm) = MW/m^3 Sergio: I think the file doesn't open because it has thousands of individual node loads that Mecway is blindly tryin…
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I'm not quite sure what you mean about linking the center of gravity. Mecway doesn't have remote mass or force loads though. You would need to either: A) Put forces directly on the face. The net force plus coupled forces for the moment caused by t…
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Here's a simple cantilever beam sandwich panel. Skin thickness = 0.2 mm Overall thickness = 10 mm Bending moment per unit length at the support = force per unit length * beam length = 20 N/m * 1 m = 20 N.m/m Mecway solution: Moment per…
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I don't quite know how to scale all the quantities properly they way you did but the way I would do it is to choose a coherent unit system like μm,kg,s,K and use that for all quantities but tell Mecway that it's m,kg,s,K. If I've done my maths right…
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An easier way would be to use the CCX solver with Mecway version 6 and line3 elements (Mesh tools -> Change element shape) which can be circular tubes. Here's a simple example. Be aware that the beam elements won't capture local buckling like s…
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Thanks for those answers Sergio, and the suggestions Andrea. I'll just add a little rationale: I don't intend Mecway to be a tool for making .inp files. Rather, a self-contained FEA program that can optionally use the CCX solver. That means the .i…
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Cyclic symmetry is a bit fussy about having other constraints on the symmetry nodes. Some combinations are allowed but some aren't. The slave nodes already follow the masters so there's no need to constrain them.
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1., 2. That's OK to delete the unused sets. > I think the *CFLUX section is the internal heat generation, but I could not understand why some of the values are negative. When I add up all the figures they add up to my total heat flux in watt…
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Yes, you'll have to use Mesh tools -> Merge nearby nodes. In general, to see if elements are joined together properly, use View -> Open cracks.
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These more complicated .inp files aren't fully recognized by Mecway and show an error message on Analysis settings after you import them to identify what was missed. To include the extra step via Mecway, paste into CCX -> Custom step contents lik…
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Here you go. The solution contains two steps - one with each direction's displacement.
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1. I don't know how besides using a real shape and setting the geometry to achieve the Ixx and Iyy values you need. 2. Either A) Use a pressure load with a formula for the linear function such as -1500*y if you want 1500 lbf/ft^2 at…
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Currently, the only practical way is to generate the band using Mesh tools -> Rotate/copy and check the Rotate element axes box.
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This is what flexible joint on beam under Loads & Constraints is for. It can be a bit tricky to select the beam end faces it uses, so here's an extract from the next version's manual showing how.
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Unfortunately *FILM doesn't allow you to use a predefined surface like that. It needs the individual faces to be defined directly in the *FILM block. If all the faces are the same face number of each element, then you can use an element set inst…
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Most of the CCX information will be assuming Linux but defining steps and just about everything else will work just the same on Windows. The difficulty might be doing it through Mecway. For multiple steps, that's not really easy so it might be bette…
