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Hello barrti There's no difference in capabilities between the two versions except for the node limit on saving and solving. That number of nodes will usually slow down the graphics. Depending on the complexity of the geometry (lots of exterior fac…
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Hello cwharpe Yes, same directory as the model, unless you specify a rooted path like C:\... Unfortunately, there currently isn't an easier way to sum the forces but I agree it'll be a useful feature.
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Hello dlybbert There isn't a direct way to do this. You could adjust the maximum and minimum so that red only appears for a range of stresses that you want to be red, but then the colors for everything else will generally be inconvenient since they…
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Hello Veto Though I can't see the gif, this problem happens with some video cards. There's a solution that's worked with 64 bit but I'll have to prepare a new one for 32 bit. I'll contact you by private message within a few days.
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Here are some other videos that people have made: Workflow for propeller blades imported from Prop_design. Anthony has done a lot of work to find an easy procedure with good accuracy. http://code.fosshub.com/PROP_DESIGN/downloads Importing a CAD p…
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These are some great videos VMH. Do you mind if I add them to Mecway's YouTube channel too?
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There's no more direct approach yet. One suggestion though - I would use beam elements that are much softer than the tube's material, otherwise they introduce a little bit of artificial stiffness when they have similar Young's modulus and thickness.…
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A formula driven selection tool would be a nice solution to this, and others have requested that so it's on my list. Often though, by the time a mesh gets too dense to pick out individual nodes, it's past the stage of hand editing anyway. If I'm do…
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Hello JRP Yes, the circle selection tool can do that but it takes two passes - first select everything inside and at the required radius, then repeat holding the CTRL key to deselect everything inside but not at the required radius. The CTRL key c…
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That's an interesting idea J_Marc There's no difference in the graphics between the demo and full versions. Mecway uses DirectX 9. It looks like there are some complications with that in VirtualBox. Have you been through things like this?http://ww…
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Thanks for another excellent comprehensive video VMH. It seems to finish quite abruptly in the middle of setting meshing parameters. Maybe that's just my internet connection. But it still captures pretty much the whole process.
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Thanks for the file Eric. It's none of what I said in my last post. There are two problems causing this error: 1) The nodes on each corner of the GLASS part are slaves of two sets of bonded contact, which isn't allowed. 2) The 4th bonded contact is…
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I think you're running into a limitation of the thick shell theory and that's why it's overly stiff. The deformation of the solid mesh shows that the cross-section is deforming into a kind of "Z" shape. This violates an assumption that the normal to…
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That's definitely an important point about hex8, VMH. But, Eric, I'm curious how you got the results to converge. When I converted the solids to hex20 or refined them, the displacement increased, getting even further from the shell result. I also s…
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That's a pretty clear validation of both results, not to mention looks like quite a powerful telescope! The Cruxis page does mention not taking into account weight distribution of the tubes, so perhaps they lumped the tube weight at the ends.
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Thanks Sergio - it's always helpful to see the model. I suspect in this case that there may be other constraints on the same nodes. A limitation of bonded contact in Mecway is that you can't put any other constraints on the slave nodes, and if ther…
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Hello eric_c If you refine a mesh made of truss elements, the new elements will also be truss elements, so they'll have too much freedom to rotate and move. It sounds like you should make all of them beam elements and apply "flexible joint" at the …
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Yes, only 2D surfaces for now, not 1D edges.
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Hello Mario Indeed, meshing is a bit of a handicap with Mecway and I regret that it's causing you frustration. It can only do a single solid part in each STEP file. So no assemblies unless each part has its own file and no shells. Version 3 goes s…
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Yea I hope that too. Thanks for posting it on here. I answer a lot of similar questions by email. It would be nice if more of that was public and searchable. Feel free to share your results too if they're not confidential.
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Hello alex You can use the "displacement" constraint as a pinned or knife support. Here's an example using both shells and beams. It would be similar for solids.
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Mecway doesn't have a special contact stress feature so the regular stresses might not be a good approximation without a very fine mesh. It also doesn't have contact which can be initially open then close as the part deforms. I would suggest using…
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Hello dmh A couple of options: 1) Add the circle as a split face using CAD software. Then the automesher will place nodes along its edge. 2) Move nearby nodes into the shape of a circle. Select the nodes around the circle and use Mesh tools->F…
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There's no builtin way sorry. Another person managed to generate an arbitrary pressure distribution on a wing by writing a program to generate a .liml file containing individual pressure loads imported from other software. You would need to convert …
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Protontim, I don't plan to add a dynamic nonlinear solver, but instead further integrate with CalculiX to take advantage of that. It should become smoother in the next version. I realize the amplitude tables can be saved quite inefficiently (duplic…
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Hello VMH It can't yet import results from CalculiX but I expect to have that in v4. There is an option in the labs menu for solving directly from Mecway though. This just streamlines the process if you don't need to make manual edits to the .inp f…
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I think I understand now. It looks like the problem is just the default orientation of the axes relative to the screen. Is that right? In this case, rotating the geometry round the axes would certainly create further problems like you mentioned with…
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VMH and Sergio, I'm not sure what you mean about the Z axis pointing up. It sounds like defining a new set of axes so that the new Z is the same direction as the current Y. That will introduce too much confusion. Do you find that after importing fr…
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About rigid links, there are now a couple of new ways to do this. It depends what kind of behavior you want. To keep the selected faces rigid, you could use bonded contact to a single high-stiffness element that has the force on it. If you need to a…
