Victor

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Victor
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  • One end doesn't deflect much because the 4 lower suspension arms at that end aren't set at truss. Note that this is a 3-state checkbox. If you have more than one element selected and they don't all have the same setting for truss, it'll show an ind…
  • I don't think so. You could check Task Manager to see if CPU utilization is more than 1/number of cores.
  • The heat flux is already given in the solution and it doesn't have a single value for a surface. Do you mean average heat flux? Or heat flow rate, with units of power? In the latter case, you need to integrate the heat flux X values. There's current…
  • Nothing specially for that, but some ideas: If it's a straight line, In wireframe view, you could rotate the line so it's normal to the screen and select them with a rectangle around the end. There's also the cutting plane to hide foreground or ba…
  • The "flexible joint on beam" is for this type of joint - not only in the middle of a beam. But it's currently only for the internal solver. I'm not sure how to do that with CCX. You might need to model the two beams separately (no shared node) and …
  • You can use beams with the CCX solver and nonlinear but not the internal nonlinear one. In case you need circular tubes instead of rectangular section, they have to be line3 elements. Use Mesh tools -> Change element shape to change them.
  • And the property names: Geometric "thickness" "ca" "cb" "cc" "cd" "ta" "tb" "tc" "td" "la" "lb" "lc" "ia" "ib" "ic" "id" "recta" "rectb" "rectthickness" "roundod" "roundid" "iyy" "izz" "torsionconst…
  • Here they are Material types Geometric "Plate" "C" "T" "L" "I" "RectBar" "RectTube" "CircularBar" "UniformCircularTube" "UniformGeneralSection" Mechanical "Isotropic" "Orthotropic" "StiffnessMatrix" "AnisotropicPlate…
  • Noted. Actually I didn't even know ZZS improved stress existed.
  • I agree that not averaging them would be more accurate. With the constraint of node values being points on a single-valued function, averaging seems like the best it can do. In future, I might have to add a new kind of mixed field variable type that…
  • I think I understand now. Sum of applied forces? Not currently. I think you'd have to solve it then use the table to select the loaded face and element selections and copy them to a spreadsheet to sum. Or maybe use CGX for that.
  • Can you clarify what you mean about separating the integral for node and acceleration forces? Do you mean the "reactions" due to inertia in a dynamic analysis? I'm not sure if there's enough data in the .frd file to identify which is which, if it in…
  • DaveStupple, adding commands there just add them to the existing *STEP section. Define the displacement constraints in Mecway, then make a new *STEP section that has forces and no non-homogeneous displacements. Here's how to define a 2nd *STEP sec…
  • You can use element or face selections instead. Node selections is risky because for shells and beams it would depend on CCX always generating new nodes using the same numbering scheme. It'll also have to detect and cope with manually added OUTPUT…
  • Probably not. You can copy and paste from Mecway's table into Excel. How did you make your graph?
  • It's because the time steps only go up to 0.45 s but my formula has 4.5 mm displacement at 0.5 s.
  • I agree with your assessment that the force isn't resisted so the o-ring flies away. Friction might be difficult because it has to be high enough that it resists the applied force at every time step, especially during the transition from deformation…
  • The main purpose of this item is to activate thermal stress so it's called that. It also happens to have one parameter which is the reference temperature. Though I can see that it also makes sense to think of it as being just the reference temperatu…
  • Yes. Not sure when though. A few people have asked for 3DConnexion support.
    in 3D mouse Comment by Victor May 2017
  • Solids are of course better if you can generate a mesh. The shells in Mecway's internal solver have a problem for certain geometries like twisted shapes, which leads to convergence failure. As far as I know, the CCX shells don't suffer from that. …
  • The short answer is no. You might be able to do harmonic analysis using *STEADY STATE DYNAMICS with the CalculiX solver but a lot of it is going to be hand-entered commands and Mecway's postprocessor probably won't be able to display the solution.…
  • There's no infinite boundary condition. You can model the room itself with a large coarse mesh. That's what's done in the organ pipe tutorial in the Tutorials manual. You'll still get room modes, but their frequencies will be much lower than the sma…
  • You can enter a formula in each of the boxes for the direction of the displacement. For example, the X, Y, Z components being x, y, 0 respectively defines a radial displacement direction as in the attachment. It's not yet possible to use formulas fo…
  • One problem is that the first 3 nodes in the node set that Mecway generates for Top_Nodes lie on a line, which isn't allowed by *MPC. Another problem which I can't explain, is that it works when your scale up the size of the mesh by a factor of 10…
    in *MPC Plane Comment by Victor April 2017
  • Not currently with a formula, though this is something I expect to add in version 8. A couple of ways: A) If it's a simple regular mesh, you could use multiple temperatures on layers of nodes. Do a steady state thermal solve first to obtain a…
  • 4GB is a bit low but it should work perfectly well with small models. Your graph shows that almost all the RAM is used simply by opening Mecway, without any model at all. I see approximately 0 memory use when doing that, so something's abnormal ther…
  • I remember seeing this happen on Wine - it would work when installing but not the next time it's run. But I can't remember what fixed it. Maybe make sure .Net 2.0 is enabled? Or this could be a new problem with Mecway 7.
  • Yea, I removed the MT version because of the buckling error that Andrea found. The .inp file editor is for viewing the generated file when you press the ".inp file" button on the solver panel. It won't automatically use any edits you make but you …
  • Although you can't specify thickness always being from one face in Mecway, you can use Shell offset in Element properties to move the midplane to one of the surfaces. It works for both the internal solver and CCX. So you can make a surface mesh of j…
  • I won't be putting load cases back in together with configurations. That's too much conceptual complexity. As for combining linear results in postprocessing, that's part of what this change is leading towards - being able to define a new field varia…
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