Stuck? 
support@mecway.com
support@mecway.com
Mecway
FEA
disla
About
- Username
- disla
- Joined
- Visits
- 1,795
- Last Active
- Roles
- Member
Comments
-
Hi, ¿Is there someone with experience computing elevation and oscillation period of enclosed water waves with the above proposal. I mean taking advanage of the paralelism with the available 2D acoustic vibration analisys : Acoustic -> Fluid S…
-
File.
-
Thank you, Victor!! Nice job. Looks like you have adjusted the size of the arrows representing BC. They look much better now.
-
You could do that with Netgen too. Just set up the Quad dominant. The minimum number of elements per curvature and edge can’t be less than 1. By other hand, your step has different parts. Try merging them before exporting. It shows some intersec…
-
Hi Hooshim This Step is suitable to extrude or even revolve. Use a good quality algorithm to get a surface mesh. I suggest a Gmsh custom command. Mesh.Algorithm = 11; Mesh.MeshSizeMax = 2; Mesh.MeshSizeMin = 2; Mesh.MeshSizeFactor = .5; Mesh.Elem…
-
Could you post the step file?
-
Nice. ¿will you add a link to your GitHub on the main MECWAY webpage?.
-
HI Victor , Not sure if you are working on this subject for final v.20 but I think kinematic could be reinstated. In fact, it has more versatility than Rigid body if it were defined through the nodes and not through the surface as it is now. R…
-
I guess if with those dimensions some nodes end up with the same coordinates after expansion.
-
. If "a" dimension is very close to "1.5b" it fails. This doesn't happen if you switch a by b. a=149mm b=100mm works a=150mm b=100mm fails a=298mm b=200mm works a=300mm b=200mm fails
-
HI, There seems to be some conflict with the application of shared BC for arbitrary beam orientations. It could be solved adding a common orientation which is always recommended for beams.
-
shear deflection Right. Nice point. Theory: 24.66 mm + 0.24mm= 24.9mm Result : 24.87 mm Deviation : 0.1% To build the section I have start from my standard section library. It was published in the forum some years ago. https://mecway.com/forum…
-
Even better & easier. Add *NODAL THICKNESS to the Modify Keyword option window so it could be change there acting just on a named Node Set.
-
HI Victor, ¿Do you see too much inconvenience in writing the shell thickness adding the *NODAL THICKNESS card? That would mean moving from : *SHELL SECTION,ELSET=SHELL1,MATERIAL=MAT1,OFFSET=0 0.005 To here: *SHELL SECTION,ELSET=SHELL1,MATERIAL=…
-
File.
-
What about working with shells but shells with variable nodal thickness? I have tried and seems a plausible approach. ¿Does someone have experience with that?.¿Any warnings about it? *SHELL SECTION,ELSET=Eall,MATERIAL=EL,OFFSET=0.0, NODAL THICKNESS…
-
https://calculix.discourse.group/t/problem-using-u1-element-general-beam-section/600/5
-
Could you sketch the profile section view?
-
Hi, Try to follow this liml file as reference. Beams are not easy to apply Boundary conditions and these custom beams are known to have some limitations.Be sure to validate the beam before using it. By other hand , once expanded, they end up as sol…
-
Thank you, Victor. First tries and I love the script. It has so few code lines that I even feel a little bad that I am not able to write it myself. One thing, It seems to send the new beam elements to another component. Not sure why.
-
You are right, the other transverse and longuitudinal modes will change value. I have try extruding a thin layer and assigning the equivalent inertia by means of adjusting that layer density and seems a more accurate substitute. Again, just for tor…
-
harryvanlangen has a script in the Python API Scripts folder called "Shape.py" that can move a set of nodes in the normal direction to the surface. ¿Maybe that script could be rearranged to be able to offset a set of selected nodes a given distance …
-
¿Why is beta damping not working?. It has no sense to me. It's the one that could really help to remove all that noise ¿isn't it? ¿Could the pendulum be a rigid body? ¿Why two spheres? Their contact is difficult by itself. Maybe better flat surface…
-
dynamics misery club . Thank you Sir.
-
Shear ZX Stress seems to show discontinuities in-between elements. Right. EDITED:Reduced integration doesn't seem to have this problem.
-
Deleted.
-
Hi John, I have been able to make some humble progress with Explicit. At least I feel more confident to make it converge. Take all what I will say carefully. Explicit Dynamics account for quickly changing conditions and discontinuous events. Select…
-
I would say one could adjust the rotational inertia with an offset of that ref node with respect the axis of rotation. I have done a couple of tests and the natural oscillation frequency of the system varies (Increase of the rotational inertia)
-
HI Victor, I would kindly ask if the "Hallow" tool could also be implemented to work in the same way as it actually does with solids but for shells. The goal would be to convert the constituent element sides into beams. That way one could easily tr…
-
Hi, Roark's formula is an aproximate value. It for this I section (r=0) is It=47.963 cm4 Introducing that value on a general beam section produces the exact result of 14.56º which agree with the analytical solution
