Stuck? 
support@mecway.com
support@mecway.com
Mecway
FEA
Victor
About
- Username
- Victor
- Joined
- Visits
- 3,794
- Last Active
- Roles
- Administrator
Comments
-
STEP
-
The next version (25) will probably have support for Alibre Design/Atom3D assemblies where each part becomes a separate component in Mecway. Not for general STEP files but I hope to find a way to achieve that because assemblies are quite important.
-
The problem here is to find wrinkling so the elements need to be small compared to the wavelength of the wrinkles which is a bit unknown. Maybe it's too coarse? The CCX manual has an example of wrinkling due to shear in section 5.16 Wrinkling of a …
-
Since displacement isn't proportional to load, you will need nonlinear analysis (Nonlinear static 3D and CCX solver). It probably needs an initial imperfection too, like some nodes moved a little. I couldn't find any wrinkling that way but I wonder…
-
Not currently, sorry.
-
They are supposed to have the same effect globally, yes.
-
Contact stiffness is so low that it looks like they aren't interacting. Units are Pa/m but should probably be GPa/m. You can set the entire surface of the plate as contact face instead of a patch in the middle.
-
Yeah, it's the condensed DOFs appearing in multiple equations problem. For example, x displacement on node 61 is the condensed DOF in both these equations: ... Change the order so the 1st node isn't the comm…
-
@sofien_73 What you posted looks OK. A likely problem is that the node-dof pair that's the first term in each equation is the condensed DOF and is not allowed to appear in any other equation, nor various other constraints. For more than 2 nodes, th…
-
You can use View -> Open cracks which separates coincident nodes. Another thing I sometimes do is Mesh tools -> Merge nearby nodes and check the total node count to see if it went down, then undo. Doesn't show you where they are but does show…
-
Yea, it could use a tool to combine them when they're equivalent.
-
It's not possible with the same mesh since a single node can only have one value for each variable. You can disconnect the members at the connections, keeping the nodes at the same location and then join the nodes with constraint equations (all 6 D…
-
Oh, that's an unusually high number of separate loads (thousands). Mecway's not designed well for such fine grained detail. As @disla said, it slows down the display. I hope to improve this in future though. It looks like a lot of items can consoli…
-
That's what the "Graphics detail during navigation" setting does for things like load and constraint symbols, selected faces, and thick model edges. Contour plot resolution shouldn't be an issue during navigation because it's not regenerated then, w…
-
As well as contour plot resolution, these are some options that can speed up: - Choose banded in Options -> Contour plot - Turn down Graphics detail during navigation in Options -> General - Turn off View -> Show model edges - Turn off Vie…
-
The threshold angle for displaying the thick edges is 20 degrees, which is coincidentally the same as CCX's threshold for introducing knots in shells. However, the way they each measure angle on curved elements might be slightly different so they mi…
-
I guess that's the reason Guido once removed the use of knots in some places like beam ends where they seem better. On curves like this, I wouldn't consider it a serious problem because with mesh refinement, the angle between elements will go down …
-
It doesn't have a report generator, sorry.
-
Haha it is too! It's been great knowing you for so long Anthony. And thanks for your help with those mind-bending inertial forces, Campbell diagrams, finding so many bugs, and providing me with motivation to implement many features. Your work with p…
-
Yea, CCX would require a unique *TRANSFORM on each node for that. Mecway 24 has a new feature which does this - Symmetry in Loads & Constraints. *EDIT: *TRANSFORM allows a cylindrical coordinate system which looks like it might work for this. …
-
That look pretty much right. To keep it simple, I would eliminate scaling for everything except one value like this: Thermal tress reference temperature = 0 K Density = temperature, like (-1e9,-1e9) and (1e9, 1e9) instead of (0,0) and (500, 373).…
-
Another idea is to vary the density rather than g. With CCX, you can define density as a function of temperature (just make it a linear function using 2 density/temperature pairs), and apply a non-uniform temperature field (defined by formula) on th…
-
From what I've seen with beam elements, if there's a knot where you apply a moment or rotation constraint, then it uses that instead of mean rotation MPCs. So my guess is this avoids the <90 degree limitation on mean rotation MPCs.
-
Forcing a knot at the loaded end causes it to solve for all angles, unlike the 360/180 degree convergences failures without? I wonder what the disadvantages of knots are. Maybe they artificially constrain deformation since they supposedly only allo…
-
Oh. I have no idea doing the other installs fixed it or some other effect. But it works so great!
-
Thanks hooshsim, that's helpful. I have a guess what it might be. Would you be able to: 1) Download this replacement mecwayd.dll https://mecway.com/download/v24/mecwayd.dll 2) Copy it into Mecway24's (not any other version) installation folder, ove…
-
Excuse me, the naming isn't that clear: v1.1 https://mecway.com/download/oldversions/mecway11.msi v2.0 https://mecway.com/download/oldversions/mecway20.msi v3.0 https://mecway.com/download/oldversions/mecway30.msi ... v9.0 https://mecway.com/downlo…
-
Cool. That's at least puts some bound on what the problem might be. I know this is a lot of work, but it would be a help if you can try the intermediate versions to identify when it stopped working. Regarding 0 frequencies, there have been a lot of…
-
The product keys were for individual versions then. I'll generate them for you and send by email later today. But it's not needed to try solving one of the sample problems to see if it crashes.
-
I used Node coordinates -> Coordinate system = Cylindrical (Y axis) and set the radius.
