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  1. hmsantanna

    ASME MPC Curves (Annex 3.D)

    Hello, First of all, I checked the equations used to generate the curves: both codes have the same equations to generate the MPC stress-strain curves. And what I didn't understand is what I wrote some posts above (reproduced here again): "STEP 2 – Determination of the Proportional Limit The...
  2. hmsantanna

    ASME MPC Curves (Annex 3.D)

    Hello, This is the example "4.6 Example Problem E-KD-2.2.4 – Generate a Stress-Strain Curve for Use in Elastic-Plastic Finite Element Analysis" from the book ASME PTB-5 (2013): ASME Section VIII – Division 3 Example Problem Manual". This is the data from this example: 4.6 Example Problem...
  3. hmsantanna

    ASME MPC Curves (Annex 3.D)

    Hello TGS4, First of all, when I meant "I've read one post..." I was talking about your post (coincidence!!!) [smile] So, my doubt arisen after I read the ASME III Examples Manual. In the example 4.6 of this manual, the stress-strain curve is calculated. And in step 2 it is calculated the...
  4. hmsantanna

    ASME MPC Curves (Annex 3.D)

    Hello again, I've read one post where it was being caught the proportional limit for a plastic strain of 1e-6. Is this make sense (I mean, is it written in ASME or wherever else?) or is just an arbitrary small plastic strain value? Thanks a lot! _______________________________ Hervandil...
  5. hmsantanna

    ASME MPC Curves (Annex 3.D)

    Hello guys, ASME Annex 3.D has some equations that can be used to create True Stress X True Strain curves for several classes of materials. No problem putting them on an Excel. I'll start my doubt showing a piece of an example that I have generated with these equations (just what I believe to...
  6. hmsantanna

    Convergence issues (force converges, but moment don't)

    Hello, So, as I told you before, the model is a large pressure vessel with a dent in a region, with pressure, hidrostatic pressur, wind and self-weight loads. I use Workbench 14.5. This version uses by default element SHELL181. The pressure loads are applied through skin elements (SURF154, if...
  7. hmsantanna

    Convergence issues (force converges, but moment don't)

    Dear cvan42, Thanks for your reply. I had already tried the stabilization option, without any success. But, while doing my reasearches, I figured out that I was having a numerical issue, named locking. The deformations were so high, that the elemento could not rotate, despite they could...
  8. hmsantanna

    Convergence issues (force converges, but moment don't)

    Hello sirs, Maybe I can have some help on this issue... I'm running na elastoplastic shell model, using large displacement effects. This analysis is a plastic colapse analysis, so, the loads are magnified according to some API 579 (Fitness for service ) rules. I have done this kind of analysis...
  9. hmsantanna

    Converting from agdb (design modeler) to iges

    Dear users, Is there any way (a freeware software) to convert a Design Modeler agdb file to iges?? The reazon is my Ansys license doesn't allow any other type of file but iges. And I don't have design modeler. Thanks, and best regards. _______________________________ Hervandil Sant'Anna Petrobras

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