polymathic

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polymathic
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  • I've had a decent muck around with this now and it is really, really cool.
    in How to use OpenRadioss Comment by polymathic October 12
  • Also, though: What solver are you using? If Calculix, beware the C3D20 brick limitations.
    in Any mesh tool suggestion Comment by polymathic September 3
  • My favourite stack to achieve what you describe is: - Midsurface in DesignSpark Mechanical. This is a very cheap, white-labelled ANSYS Spaceclaim, which is an extremely capable direct modeller so you get all the CAD kernel horsepower for a fraction…
    in Any mesh tool suggestion Comment by polymathic September 3
  • @disla I had missed this till now: Could you try if adding ADJUST=0.1 solves with no more changes? Is that token force normal to the contact plane? If that’s the case the reason why the dummy force also works could be different. Anyway it’s good t…
    in Quasi-static - No Extra Contact Step Comment by polymathic May 30
  • @disla: That is a great example model to illustrate, thanks! I did have weak springs as constraints but I always am unsure that I have 'enough'. I err on the side of low spring constant values and apply to single elements because anything excessive …
    in Quasi-static - No Extra Contact Step Comment by polymathic May 30
  • With the latest model (slightly changed from my first post), direct back-to-back of: 1) Baseline - no customisations in the CCX tree other than specifying Pardiso solver. After some incidental modifications this one does converge eventually - 60 it…
    in Quasi-static - No Extra Contact Step Comment by polymathic May 29
  • When I create the following contact in the UI, I am not getting ADJUST in the input file: *CONTACT PAIR,INTERACTION=SI_1255,TYPE=SURFACE TO SURFACE Pad_Rotor_ContactFace,Rotor_Pad_ContactFace *SURFACE INTERACTION,NAME=SI_1255 *SURFACE BEHAVIOR,PRE…
    in Quasi-static - No Extra Contact Step Comment by polymathic May 29
  • Thanks indeed for cruising the forum on Memorial Day weekend, the overclosure is a good trick I hadn't thought of. I will give this a try!
    in Quasi-static - No Extra Contact Step Comment by polymathic May 27
  • protontim: It would be nice to be able to add labels to the computed solutions so it can be easily seen what they refer to. See below. +1 to this!
    in Improvement for next versions of Mecway Comment by polymathic May 9
  • Thanks Sergio Agree, I have also spent countless hours re-establishing contacts in ABAQUS and Inventor NASTRAN. I have watched it done quickly in Ansys Mech, via the auto tool, but that is the only time. The Hypermesh automation sounds like a good…
    in Workflow for automatic contact recognition Comment by polymathic May 9
  • Thanks John. Somewhat comforting to hear the more mature CAD package isn't any better. I have been down similar routes; regarding the first I had too many elements so the warnings go forever before the simulation starts, and with the second, I did t…
    in Workflow for automatic contact recognition Comment by polymathic May 2
  • In the absence of automatic (a la Ansys) contact functionality, once you do build contacts manually there's a lot of work in maintaining them; I do a lot of iterative analyses, looping from CAD to Mecway and back again with updated STEP files. I ima…
    in Workflow for automatic contact recognition Comment by polymathic April 30
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