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Sergio
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You must apply an acceleration (gravity) to the falling part, and you could also apply a initial speed as am initial condition. Look the Calculix 09 channel on youtube, he has uploaded a video of impact simulation this week.
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Look for the falling ball example in the bConverged CCX version (or this forum itself) Is the mother of all impact simulations on CCX. But don't put too much expectations on results, I don't feel is ready for production.
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Sometimes I load and unload (but completly) the material (over the yield point) to see how much deformed the part left after the loading. He says that will change the friction between steps, I'm tring to figurate a situation were this must be need…
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Sorry I make a stupid mistake and download the 32bits version :-) :-) :-) :-) :-) With the 64 bits works ok, the test suite gives me exactly the same results than with 2.10 This is where the patchs for the Paraview results are: https://ww…
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Bad news kwip, I downloaded the executable (is only that?) and first run the usual test suite... lots of errors and ccx crash almost for any file. Then I try to solve a model from Mecway GUI and again... error! See the attachments. Guess that is a…
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I understand the point, have signed several NDA and also working for a company that not allow us to share to much detailed information. About the multiple steps simulations, I like also in that way, having different steps for every load rather tha…
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Great! Have you compiled also CGX? Have read that both are needed.
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"Paint select's brush size scales with mouse speed, making it easy to select all the way to sharp edges." I'm really struggling with this new behavieur, is dificult to me to make big selections, now the brush is almost a fine brush only. The si…
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Can you attach the liml file?
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Just to give another option to hexameshing, I have found in this new release 6 (not sure if is a new feature), an option to convert tet4 elements into four hexa8 elements, that is, a mesh of tetras to full hexas. They are not so perfectly shaped as …
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You're welcome :-)
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Have found a very easy to solve the meshing inside Mecway itself: 1) Mesh using only surfaces (element size=3mm, lineal elements) and uncheck cuads elements (don't know if is exactly necesary) 2) Check that there is some nodes unconected with View…
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Some missed screenshots :-)
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For this part you can import it in Netgen (have tried with netgen 6.1) and using the IGS/STEP Geometry Doctor with the default option will heal the part. After you can export the geometry as stp and import in Mecway this healed file to mesh it. I …
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Great improvents Victor! I didn't have time to test it all, but see some comments bellow: 1) Great inclusion of CCX, for new users will be easy to adopt it. But, can you add a parameter to select the number of processors to use to solve? Now is fi…
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For some parts Mecway mesher (Netgen) crashes, but if you use Netgen alone works, othewhise try Step/IGS Doctor on Netgen. A third solution is to use Gmsh... and last is use Salome. Good luck! Anyway if you have the geometry you could try to s…
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Have you tryied with with a bigger size of elements? First order in place of second? Local refining? For big insane meshes I have noted that Salome is better (even if he is using Netgen also). But again, is necesary such a quantity of elements?
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The problem is that you are meshing only the outside faces of a solid part. Try to import step and do the mesh with second order tetra elements.
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Can you share the lml file or some screenshots of it? Look like you are triyng to solve a problem with shell elements and no thicknes was defined. Regards
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Then guess that will be enough with Mecway/Netgen, 90% or more quads and you need to extrude or use shell elements directly. I prefer in CCX or others to use real hexa elements (by means of extrude) than shells (for sheet metal parts and structural …
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For the example part I would leave in the CAD program only one side of the part faces, then in Mecway mesh as surface and extrude along element normal this meshes to create hexas/wedges. Then is a matter of using some glue (ccx TIE or Mecway glue co…
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Tahnks! I will check it, but for what I read by the moment... looks very ugly, no interface, to much hand writting cards... only for mesh generation!!! I would like to see some real cases of meshes gerated by them, mesh result and mesh procedure. …
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Is there an foamyhexmesh for Windows?????
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Can you share some simple models to make some tests? Normally for 2D meshes I'm using Gmsh, that gives me more quads (and then hexas by extruding) than Mecway/Netgen. This is about 97-99% of quads, if you need 100% quads then you could use the trial…
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Nice! One thing that I notice while running insane big models in CCX is that Mecway itself took a lot of memory also while is being solved. One workaround is to export the model as .inp and then close Mecway and lunch CCX from command line, then w…
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Personally I preffer to define the time amplitude table as (with time step 1) *AMPLITUDE,NAME=AMP_1 0,0 1,1 Then the displacement boundary condition would be writted as *BOUNDARY,AMPLITUDE=AMP_1 pipe_end,2,2,-12e-3 So in cas…
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Read as: 2,2 are the DOFs, so it means "from DOF 2 to DOF 2" that is only 2 (but you could have 1,3 that is 1,2,3...or 1,6 or 3,5...). DOF 2 is Y displacement 1 means "apply a displacement of 1 multiplied by the amplitud of the step", so as in…
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Is a very common file format for write FEA/CFD results, and there is a postprocessor called Paraview freely available that can open this vtk files. You can add a little of candy for the eyes to your results using Paraview. Regards
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Multiple material assignment could be a good candidate for liml manual editing.
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I found the same error on several models, even solving wit CCX. My solution is suppress the EQUATIONS cards generates by Mecway and use TIE in place that allow both nodes be in different "gluing" relation. What is the difference between using equati…
