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  1. andreadelvecchio

    advice about Contact

    i read in Probe>nodes it is wrong?maybe i have to read in integration point?i am confused
  2. andreadelvecchio

    advice about Contact

    thanks cooken, I was doing all the evidence in the case, as you said. Both you and rob have reason, i have resolved my problem, there was a boundary condition that with nlgeom stiffed all the ribbons in bending. Now I am using nlgeom on and incompatible mode, also I am trying the quadratic...
  3. andreadelvecchio

    advice about Contact

    Hi rob, again thanks for your precious help. I've tried to toggle on NlGeom, it works. I have tried both linear element (incompatible mode c3d8I) and Quadratic (red integration). finally they work, but the ribbons are very stiff. I've tested one ribbon, The ribbon have a section of 30mm x 1mm...
  4. andreadelvecchio

    advice about Contact

    Hi Rob, thank you for responding so promptly to my message. after contacting you, I succedeed in finding a solution for the problem; I have also added more than 2 ribbons. But it works only if I toogle off in Non linear geometric. Do you think that it could go well? I think that it is a border...
  5. andreadelvecchio

    advice about Contact

    this is momentaneo2.caehttp://files.engineering.com/getfile.aspx?folder=385595d8-9268-4623-92fe-9a13f1d5e65a&file=momentaneo2.cae
  6. andreadelvecchio

    advice about Contact

    dear rob, sorry to bother you. I really do not understand why it does not work, can you help me? the file momentaneo.cae work, it's with one ribbon. the file momentaneo2.cae doesn't work, it 's with 2 ribbons, with the same bc/steps/load and mesh of previously file I 'm going...
  7. andreadelvecchio

    advice about Contact

    although with only ribbons works , for me the problem is with two
  8. andreadelvecchio

    advice about Contact

    thanks rob, i try in next day, maybe is a problem of boundary condition after than i've seen your file. Maybe you saved me
  9. andreadelvecchio

    advice about Contact

    this file is the real problemhttp://files.engineering.com/getfile.aspx?folder=e545a499-f113-4f80-b74f-8d7926e59ce1&file=291215.cae
  10. andreadelvecchio

    advice about Contact

    hi, the analysis does not calculate with any increase so the error is many attemps for this incremnt (1) or if I create some boundary conditions,but changes the problem, the errors is Time increment required is less than the minimum specified, but this is a fictitious problem , in my opinion...
  11. andreadelvecchio

    advice about Contact

    hello to everybody, I am attaching pictures of my problem. the first picture is the undeformed of my first approach, a ribbon wound around a reel. in the second picture I've try to applied several load to close the ribbon. there is friction between the reel and ribbon. it work fine. then I...
  12. andreadelvecchio

    Abaqus beginner

  13. andreadelvecchio

    Abaqus beginner

    the solution with hands is the same with aproximate size of the seeds 10, with 5 everthing's change :(
  14. andreadelvecchio

    Abaqus beginner

    the solution with my hand is correct, i'm sure. i have change the "approximate global size" in "global seeds" i do not know if it's correct, i'm asking you. I don't understand last question. sorry and thanks
  15. andreadelvecchio

    Abaqus beginner

    you're right , but I have done the calculation by hand , and if I increase the mesh increase the solution moves away
  16. andreadelvecchio

    Abaqus beginner

    Help me
  17. andreadelvecchio

    Abaqus beginner

    Hello to everybody, i'm italian student. And i m starting my thesis with abaqus. I start with tutoril that i finding in web, such a cantilever beam. I've a problem, the stress change when i change the mesh (type or seeds), i don't understand why, can you help me?

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