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Recent content by Nildev

  1. Nildev

    Butterfly Plate Shaft Angle

    Hi All, I am beginner in this area. While discussing with my customer I understood that butterfly plate shaft is at an angle to improve the sealing. It will be great help if any one could explain how it is achieved? Why some shafts have more inclinations and why some are with less inclination...
  2. Nildev

    Ansy Convergence Criterion

    Hi Claudio and Drej, Thanks for keeping discussion live and useful. I am sure there is no perfect answer for this, but discussion will evolve 1) Points to check if we are using our own tolerances 2) Which Criterion to be considered? 3) Convergence issues with Nlgeom and Nlmaterial. Cluadio...
  3. Nildev

    Ansy Convergence Criterion

    Claudio, Thanks for detailed explaination. Your explaination about Force balance is very much convincing me. Few of the things from above I have already tried. One thing which is not in control is material data limits. As you pointed out: the forces are such that the stresses calculated...
  4. Nildev

    Pull-out of cone from conical opening

    You may have checked, but couple of simple things to check again: 1) Contact Normals 2) Try with Symmetric Conatct 3)Use contact option such that initial gap or penetration is zero. Hope this may help you.
  5. Nildev

    Ansy Convergence Criterion

    Hi, Please let me know if somebody has info for the below In one of my problem I had nlgeom,contacts and nonlinear mps. Problem was difficult to converge with default CNVTOL. I thought to relax. With only moment convergence(1e-4) very small I could get convergence. But Ansys recommndes F and M...
  6. Nildev

    Analysis of sign post!

    I think as suggested by TGS4, Torque is must. This is because if the area of the pad is more then torque value will be much more dominant. Also the torque value depends on angle of attack. Best thing is not to apply force at centrod, rather model pad and distribute the pressure on the pad...
  7. Nildev

    Force and Moment Convergence

    Hi Drej, Thanks for the quick info. In one of my problem I had nlgeom,contacts and nonlinear mps. Problem was difficult to converge with default CNVTOL. I thought to relax. With only moment convergence(1e-4) very small I could get convergence. But Ansys recommndes F and M together. I would like...
  8. Nildev

    Force and Moment Convergence

    Hi, Can anyone throw some light on when to use Force onvergence, Moment convergence or displacment convergence? How they are different and what is risk if we use only one?

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