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Mecway
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Sergio
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As far as I know there is no way, what I do normally is select the component in the model tree, invert the selection, delete all the elements and export. And after undo to recover the elements.
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In Gmsh, go to Menu/Tools/Options, and then select Mesh and look in the first tab General. There you have the Min/Max element size and other mesh settings
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This is the mesh on your step, using gmsh with custom commands to force the structured quads, now was not needed to do the mesh smooth after meshing.
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Just playing with custom command in Gmesh, meshing, and deleting unused nodes, and then smooth the mesh in Mecway we can get a nice mesh. I don´t understand why Gmsh generate these extra nodes, and why in Mecway the mesh is not smoothed directly.
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Have made some quick test with a quarter plate and basic mesh definition and my meshes doesn´t show such bad elements. Could you share your step file?
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Just for the record I´m using a CPU Intel(R) Xeon(R) W-2275 CPU @ 3.30GHz, and the Mecway v17 with the internal solver crash if there are only beams elements in the model. If I include a dummy solid element then can be solved without problems.
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Results looks ok, under Deformed View Settings adjust the Scale factor to 1 or some value less alarming. The overall displacement is less than 1mm
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@JohnM we use first order hexas for thick rubber parts (engine mounts, bushes), and our predictions in terms of stiffness and stress (for durability) were very accurate, as we test our parts after desinging. About thin parts as bellows, even if we m…
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For rubber with contact we use first order hexa elements, there you could reduce a lot the node count. We predict very accurate the load/deflection curves of the rubber parts.
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When I was in the automotive industrie modeling rubber parts, we pay special attention to meshing (and bc) to keep the nodel count low and be able to run our no lineal problems in a razonable time. We use manual mapped mesh, hexa meshing, and contro…
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You can choose to don't buy maintenance, and still you can move the licence between different computers.
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Alibre is on black friday with a comercial licence of Alibre Atom at usd 100, is a great product for such a low price.
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The new spring element visual representation is awesome! I though that would be visible only in preprocessing, but is also visible and deformable in postprocessing, really really beautifull and usefull to better understanding. Coud be added somethi…
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Just create a partition (a split in your surface) in your CAD software. You could do it in Salome or FreeCAD as well, but is more complex.
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It works! Now I can import a big UNV assembly mesh into an empty Mecway file, and get all groups of elements converted to components. I have tunned the script to create and assign a basic steel material and assign to each component, and then delete …
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Hi @Victor, I have modified this last script to create a new material and assing to every component, and it works very well, the problem is that when I try to assing a Young Modulus of 205000000000 Pa (205000 Mpa) to the material (using mw.set_mater…
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Thanks! I have seen yestarday, is perfect to those situations were we import meshes with lot of components from Salome.
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Hi @Victor, could you add an option to automatically group boundary conditions by type in the boundary conditions branch of the tree?
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@dculp in Salome, there are several mesh quality parameters that you can check, and edge lenght was one of them.
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Hi, @Lhartey , attached a link to a video of a steel tower solved with Code_Aster, the interesting is that the model (step, only lines) is available to download, so you could try to reproduce the results. Mecway will not import the stp, but you can …
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As far as I remember Abaqus CAE doesn´t need so many tokens to run, is the solver what needs a lot. Maybe could be interesting see if is possible to buy only Abaqus CAE and do the meshes there.
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With Siemens NX or Abaqus CAE you can work at geometry levels such as "delete that wire", "move that wire end to that end line and avoid having stupid 0.2mm lengh dirty edges" and things like that, but they are very expensive. Maybe with moi3d you c…
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@JohnM , Solidedge and Solidworks have tools to delete faces (radius, chamfers, holes...) that can work with imported geometries. I agree that after making lot of simulations you learn to draw your models in a clean way, first the big shape of the p…
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@JohnM , have you tried removing faces in Solidworks? I use Solidedge at work, and is possible to just delete those radius and chamfers.
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Well well well, @cwharpe, could it be that I herd that you are open to script suggestion??? :-) I have some in mind that could be very usefull, but no code skills at my side. What about: 1) A script to convert all the element named selections (grou…
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@dculp , the stp was uploaded by user @Lorenzo in this same thread.
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The true is that the 3D cad model for this cases is normally use as a base to redraw the frame with lines for the FEA modeling. Draw a couple of lines and find a way to export it before making the whole model again. If it were made with perfect…
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@traemand I model structures like that, CAD and FEA. I use Solidedge, where those structures can be modeled using a special feature that draws profiles over an 2D or 3D sketch. These sketchs can be exported as stp, if they are 3D sketchs, and the op…
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FreeCAD lacks of a standard (unified) assembly and drawing enviroment. There are several assembly/draft workbenchs, but all work in a more complex/weird way than traditonal comercial CADs. That´s why I like Alibre, it just works (well :-) )
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https://we.tl/t-LIeS8U1LIz Will try to upload to my site in the future.
