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  1. uribemax2

    Too large Patran db file

    Oh.. okay, thanks! Regards
  2. uribemax2

    Too large Patran db file

    And why Patran couldn't get new space instead of reserving it from before? Regards.
  3. uribemax2

    Too large Patran db file

    Thanks, now the question should be why Patran need to retain the space of deleted entities, but I suppose that there is no answer for that... Regards.
  4. uribemax2

    Too large Patran db file

    Thank you very much. jeram123, I tried what you said and the file size reduces but not as much as it should, comparing with the original one. However, I also tried your solution, compositecurves, and it worked really well. The new .db file is almost the half of the previous!! Once the problem...
  5. uribemax2

    Too large Patran db file

    Hello all, I am working with a big Patran model of around 160MB. The problem is that the more I work with it, sending different load cases to analyze or modifying it, the bigger it gets. I cannot understand why because the model is always the same, I haven't increased the number of elements so...
  6. uribemax2

    Very different displacements in Linear and Non-Linear Analysis

    Thanks for answering. Sorry for my bad explanation, I meant that the real load case involves a contact, but the inner piece rotates before contact the other one, and this rotation is which is different between linear and non-linear. What I did to make the analysis easier was to delete the...
  7. uribemax2

    Very different displacements in Linear and Non-Linear Analysis

    Hi all, I am using the Marc solution (SOL 600) for solving a contact between two cylindrical pieces (one inside the other) but I've obtained a very different result in "Rotational Displacements" that when I used the Linear Solver (without contact). I tried to deactivate contact zones and ease...
  8. uribemax2

    "Zero thickness" error in SOL 600

    I've tried to run the same implicit analysis replacing bar elements by quad ones but it still gives me the same error so this kind of elements cannot be the reason. Moreover I've redefined all properties and nothing has changed since then, I havo no more ideas so please could anyone help me...
  9. uribemax2

    Problem with non-linear bush

    Hello all I was looking for a way to modelize a displacement limiter and I think I can do it through a non-linear bush. There are two parts in my model, one fixed and another one turning around its axis. My idea is to fit a bush element between these two parts and set its stiffness variable...
  10. uribemax2

    "Zero thickness" error in SOL 600

    I've already checked that and I've run SOL 106 analysis without any problems. I am almost sure that it is not problem of the shell elements because I've used the same model with different connector and it worked perfectly with Implicit Nonlinear Analysis. Could be the bar elements that I am...
  11. uribemax2

    Different thickness field for each shell side

    Thanks for answering. That was my idea if it is possible but I am open to other ways of doing it. This piece is part of a very big model with many other parts, all modelized by shells, so that's why I want to do it. If you know how to do it with more than one layer, please explain me how...
  12. uribemax2

    Different thickness field for each shell side

    Hello all, I am looking for a way to define two different scalar fields for the same shell element. The geometry I want to represent is like a cylinder with a longitudinal hole, and I want to discretize it with shell elements. My idea is to define a different thickness function for each side of...
  13. uribemax2

    "Zero thickness" error in SOL 600

    Thanks for your response. It appears before the iteration
  14. uribemax2

    "Zero thickness" error in SOL 600

    Hello all, I am doing a SOL 600 analysis but Nastran gives me an error of "zero thickness" in some elements. Obviously, I checked those elements and they have properly defined their properties so I don't know what can I do. I've done a lot of linear analysis to that model and all of them have...

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