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Sergio
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Comments
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Look for the *RESTART card on the CCX documentation, I never use it but is what you need it. Regards
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Pay attention that no matter the units that you are using in your model, in the CCX custom data dialog box must be entered in meters and Newtons!
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1) If you are working with an assembly, mi advice is try to solve within Mecway using CCX as solver. In this way you will be able to hide/show every component of the assembly during postprocessing (for example to see the stress in a unique bolt), so…
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My last project using beams was a pain also, all do it entering the node coordinates for every corner, then unity this nodes to create the beams and then refine it every segment. A real pain
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I'm using constantly Mecway as a postprocessor for Calculix without problems (only has to take care of the unit as it assume that the .frd will has Newtons and meters). Surely you have a problem on the input file, my advice is that you must re…
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I'm using constantly Mecway as a postprocessor for Calculix without problems (only has to take care of the unit as it assume that the .frd will has Newtons and meters). Surely you have a problem on the input file, my advice is that you must re…
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One trick to improve the mesh is first mesh with lineal element, and then change the shape (order) of the element, so then it will add a node in the middle but not deforming the element shape to this bananas. Now I don¡t remember if Mecway have the …
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You could combine the two solids in Salome to create a conformal mesh (coincident nodes at the interface) to avoid using anything and get a perfect gluing if you are not analysing the union itself.
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True is that is a little bit confuse to me also. When I work writting the cards directly, I don't use this distance (solver takes a default value based on element size), but now I don't remeber if for using in Mecway must be slighty over the minimun…
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Could it be that if you run a simple analysis the solver tells you what element are wrong? Then you can select by element number. I don't remember having bad elements inside the geometry, they always appear outside near small surfaces or features.
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Bonded contact should be work (be sure to use TIE option) or you can apply a temperature to the rod and thermal properties to work with the dilatation of the material. In this case you need to work with the CCX cards in the custom step feature.
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That´s the things that keep me away from using shells on CCX, have know that we cannot use TIE, but also the artifacts that it creates at the angles (knots) or find weird how the boundary conditions are traslasted to the expanded nodes. Another draw…
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As far as I know CSV are always generated in the same way no matter the regional configuration, maybe this could lead to other problems. I live in Argentina and even if we use commas for decimal separator, I always modify the regional settings to us…
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Could be as an extra tool, but why not an option on the program to keep outside by default? I mean, Abaqus, and NX does in that way to don't inflate the models files. Regards PD: I can answeer myself... doing an extra tool is easier, is just readi…
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By the way the creep will be present if the hook is stressed at temperature for long time, in your case maybe would be outside of the furnace so won´t be affected.
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I'm working in a similar problem, a table to support some assemblies that will be under thermal release stress treatment at 730 degrees. One thing that could be a problem is also creep, at high temperatures could be significant. We are constrained a…
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I agree, for long runs is nice to be able to see and update the progress of the increments.
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Victor, that option "mesh only and choose units" will be perfect, because most of time that (at least me) I do it is for continuing writting my own cards separately. I'm constantly adding those "Don't generate keywords" entries in my models. Regards
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If you use coincident mesh (made it on Salome) there is no need to bond as they share nodes.
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Another option would be making a volume division on the geometry using Salome, then join both and make a mesh on that joined geometry, to have a continuos mesh but divided exactly where you need the plane with coincident nodes. Then you can export a…
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One thing that we as user must recognize is that this kind of problem is not only related to Mecway alone, Abaqus itself has the same behaviour sometimes (the inp files that Abaqus CAE generate are not so easy to read by human eye, or worst thing so…
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I also use a lot of sharing inp (or at least import/export/fine tuning), so it makes a little complex to see forces or pressures applied to each node or element face. Andrea, one thing that sometime did for improve the reading of input file is gen…
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Yeah, were ten years ago or more. I use solid element as I neeed to compute the slippage and separation under the bolt head at ultimate loading of aluminium brackets. We divide the shaft of the bolt, normally the non threaded portion and apply only …
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Look for the CalculiX 09 channel in Youtube, he has made some video of this kind of unions using bolts. With CCX you can use also the PRELOAD card to apply directly the bolt preloading. By the way Andrea, how do you apply the temperature preload to…
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I have seen Tekla for creating those structures and joints, it has some kind of library for them.
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You can try any 3D cad as Freecad, Salome (yes, simple geometry can be generated there), Onshape, Fusion 360, Solidworks, Solidege, NX, CATIA...all will generate a STEP file. Regards
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Have made some analysis (and real vacumm tests at low and high temperature) of this kind of part in the past, for pickup engine air intakes. We use EPDM rubber and other solver in that moment. As Victor says, you need to perform an no lineal static …
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By the way, if you are working in make optional the field variables (NODE FILE and EL FILE cards in CCX), could you add the NODE PRINT card available in the GUI directly also?
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User calculated resuls sounds great. I use it in Nastran computing first individual unit load cases and then combining the results to create multiaxial loading. Could it be that some crude damage be calculated maybe? Regards
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German, nice to meet you, even more knowing that you are involved with UTN!!! I live very close to UTN Pacheco... About your problem, try to change the place were Mecway save the simulation files to the same folder as the lml file (in the options m…
