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Sergio
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Nice results, will try this new 2.18 version. As you say, I have noticed in the past that CCX with Pardiso doesn't take a lot of CPU while is running, and that for more than 6-8 cores there is no significative improvement in performance. Also, what …
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Yes it is, sorry for my mistake. For creating contact, plastic material and dynamic analysis, the options are ready to use in the GUI without manually writting the cards.
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Hi, in the CCX examples, there is a file called BALL or something like that with DYNAMIC, EXPLICIT and CONTACT cards included.
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You must use the CCX solver, then define a local coordinate system using CCX Custom Model Definition and *TRANSFORM card relative to a node set, then the loads applied on that node set in the GUI will be related to this new CS
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There you have it. Seasoned with CCX custom card to achieve faster convergence. I would replace the contact with TIE in bolt head and nut interfaces.
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@JohnM , thanks for the advices. Which component (Exx, Eyy...) of strain should I look? I will definitely model the strain gage and attach to some flat area as you say. Attached some pics of the part, the pressure is applied on the blue surfaces, si…
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Editing directly the liml file can be very usefull, sometimes the GUI is slow or take several steps do a repetitive task as creating glue contacts or assign material when the model is big or has lot of components.
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I was thinking in the same feature this week, a new option in the geometry to replace the part... You can made it just editing the liml file with Notepad, luckily the part definition is at the begining of the file.
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Would be interesting to see the difference between a 100% quad vs 99% quad for this beam.
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Mecway mesher (Netgen or Gmsh) doesn´t have "quad only" mesh capabilities. You could mesh in Salome and exporting to Mecway with full quads, or for this particular case you could select the edge of the elements in one end of the beam, and extrude to…
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If your models will differ only in the transition area, you could do a first analysis with a medium size mesh, and then do a submodeling analysis with a finer mesh only in that area, the good news is that you can use the same first main analysis for…
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Convert your .frd result file to some readable by Paraview format (as vtk, vtu, rmed...) and postprocess in Paraview. There you could have a clean cut of your part (hiding the element edges). Anyway will be more tedius than Mecway!
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Sometimes for a huge mesh like I imagine that is your case, CCX PARDISO shows me as a succefull run, but not results are stored, this is due to the fact that you don't have enough RAM memory. You could try using the internal Mecway solver, that will…
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I would sacrify a little of accuracy using half, or cuarter part if the loading is simmetric, best would be an axissimmetric model. Looks like your elements has not the best shape, I have a feeling that bad shape element can increase the time to sol…
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I'm using CCX 2.17 with Pardiso, but as far as I know is "in core" version, that will try to fit all the model inside RAM, there are other cersion "out of core" that put some part of the model in disk if RAM is not enough.
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Hi @disla , as far as I know all the postprocessors that I have used shows this same issue (look in Google images of FEA of shafts, and lots of them will show in this way, probably the ones that are not use less scale). Guess that is related to the …
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Has somebody experienced the fact that a big problem was succesfully calculated (according to the CCX log), but there are no results at all? Today I solve a lineal problem that took about 30GB (of 32 available, all the rest was for Windows and Chrom…
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Thanks @JohnM , have solved decreasing the scale of magnification, initial was x1000 but with x50 is enoguh to see the rotation and the other deformation is almost invisible.
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@Victor, using the beta version, I have defined a quasi static no lineal analisys, but this definition is not keeped when I open again the analisys definition window. Have closed and reopened the model/program and the problem remains. EDIT: my mist…
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Hi Victor, what a bunch of new features!. Have tested the hardening curve, and found a little weird that the Young modulus be defined from the points of the curve and not as the usual way of taking the first part from the defined Youn Modulus and on…
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Hi @cashan 1) Yes, using the the CalculiX solver, but the material must be defined using CCX Custom cards, not in the Mecway material definition. Look in the CCX manual how the material is defined at different temperatures. 2) Normally I made a the…
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Hi Victor, maybe for future releases, can you add the possibility of grouping componentes in the model tree? Something like subassemblies for easily navigate (by reducing the lenght of the component branch), manipulate (hide/show related sectors of …
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@prop_desing, that´s means that a CCX version compiled with this new compiler will be fast than the same using other one? And this compiled version (executable) can be distribuited also, or there is some kind of licence that avoid it?
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Normally for selecting nodes, I hide the element faces, then with box selection the hided nodes (those aligned with one in front) are selected all at once.
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You can define group of nodes (named selection) before solving, and then in the table result window select the results that you want only in your node group. Regards
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@Victor, in the mesh definition, the units once defined are not keeped between parts, so it must be adjusted for everyone. Would be greate to have the mesh definition stored similar to a material, so we could apply it for several parts in the model,…
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@Victor, have tested a few minuts ago the internal default Netgen mesher against the last standalone version, and activating the multi thread option in the standalone there is a big difference in time to mesh (didn´t measure, but something like 10 t…
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Don't know what can be wrong on the model, have tested with similar results, anyway the part can be meshed directly in Salome using Netgen algorithm.
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Hi Victor, can you add the possibility of generate named selection of CAD faces, but with more than one face? Now is possible but limted to groups of one face only. Edited: Actually it´s possible to create named selection of several faces, even fro…
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@Disla, is very easy to convert a shel mesh into a 3D hexa dominant in Mecway, just extrude the faces towards the thikness direction (+/- element normal), define the thikness and number of layers.
