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Sergio
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Hi Victor, thnks for this update. I have installed and there are some visual glitch in the pretension bc. I have applied in several horizontal bolts, and they are represented in the center position (paralell to X), but for the vertical ones (Z direc…
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Hi @polymathic I have tried to mesh your part in Salome, and looks like the surfaces have some errors, such as the edges of some faces are not shared or coincidents with the adjacents, very different to what I see when I model with standard CAD tool…
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Thanks! I tried installing Mystran with the 29 version and didn´t work, results were not imported, will try again now. In which cases Mystran would be better than Internal, CCX or OpenRadioss solver? The only thing that came to my mind from my days …
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@JohnM nice trick! Did you find a way to save also custom meshing parameters for Gmsh? There are two sets of parameters, one for meshing conformal parts and the other to meshing with quads that could be great to save. Maybe could be saved at least a…
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Can you share the geometry file?
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@Victor about deleted elements in OpenRadioss, the new version of CCX has a new damage initiation models with element deletion also, based on plastic strain, so maybe if you implement something to deal with those elements in Mecway, the feature coul…
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Great update. The "copy mesh parameter to.." is a nice feature, could be implemented something similar for material assigment?
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Hi, by the way there is a mistake in the material definition, I took your same values but the unit is wrong, so check it before any conclusion. About durability on rubber, I work for that years ago, we use maximun principal stress (Principal Stress…
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I have re meshed with Gmsh with special sauce (parameters) to get only quads, and now we can reach up to 80 mm deformation before the solver stops. I have refined manually the mesh in only one radius (because all are similar, cannot make it work wit…
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Did you try to replace the c channes by beams? About meshing the C channesl, you can just mesh the C shape with very few line elements, and then extrude (to create quads) along the lenght of the channel choosing the number of elements that you want/…
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Hi @Fatmac , did you see the cases 4 and 6? I did others cases and agree very well
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As far as I remember the .frd doesn´t keep that group information, is Mecway that creates that relationship. If you work outisde Mecway the importer probably cannot make that relation again, even if you have imported before the input file. Using P…
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There is a specific boundary condition in Mecway/CalculiX called Pre-Tension Section
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If you think that there will be contact between de bolt body and hole, then you need to apply contact with separation at the two bolt and nut heads and plate to allow the slippage, otherwise the TIE will prevent the internal contact. Also add the bo…
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In my opinion the level of penetration in the plate to plate contact area is too high with your model set up. I have changed the contact between bolt head and plate to a basic TIE, and increase a lot the contact stiffness (up to 16000 Gpa/mm) and ge…
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Hi Manuel, I was able to solve it reducing the element size of the thin component and changing the contact parameters to basic TIE configuration. Still didn´t have the time to analyze the new bc of this new version of Mecway, but can you tell us why…
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Guess that the path is starting with the default contact stiffness, and if you see that the contact is not detected at all, switch the contact pairs. If you see that there is some penetration in the contact area, then increase the contact stiffness …
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In fact, I didn´t find any improvements using the other contact options or kind of contacts in my mechanical simulations, is just a matter of adjusting the contact stiffness and sometimes switching the master/slave pairs.
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Hi, you could define the surface or node groups in Mecway, and then define the contact as a CCX custom model definition, and writing by hand the appropiated cards.
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About the copy to clipboard function, I use very very few times, maybe if it would be available as an option in the contextual menu in the model tree when we select the field to postprocess, or maybe adding a new contextual menu to the graphic area …
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atacched
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I think that with a model with more element in thickness should work well the cyclic symmetry. Another issue is that Mecway cannot separate components in the results if you ask for the symmetric results.
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I have used very few times the cyclic symmetry, attached some examples that I did years ago (was not implemented in GUI so I wrote the cards manually), hope it help you. https://drive.google.com/file/d/1rUnfCIAdxrY3Nx6fUAcNqFWH_GCyIufH/view?usp=sha…
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Attached the model solved
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I use wedges for structural simulations and they behave well. This model can be solved easily with frictionless supports in the simmetry faces and high contacts stiffness
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@Victor, could be that the program shows the colapsed elements with the same red cross symbol as the distorted elements? In that way we could figurate quickly the error.
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Pay attention that you have colapsed hexas at the center line of the model, it should be wedges. Use the tool Merge nodes witi a small tolerance such as 0.001 mm to stich the nodes and convert the colpased hexas in wedges. With that at least the fa…
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If you look to convert groups of elements to components, there is a way to make it by means of a python script, look in the script post: https://mecway.com/forum/discussion/1020/python-api-scripts#latest
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I found a way to make it in Gmsh, or even inside Mecway using Gmsh and custom commands, but to me is easier to do it in Salome directly. https://mecway.com/forum/discussion/808/conformal-meshes-with-gmsh
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I think that these anotations could be translated into the different input files (CCX and OpenRadioss), so it should be only text. 1. For the analysis could be a separated text field and branch in the model tree (*HEADING card for CCX, don´t know …
