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  1. hezhj2000

    Patran 2014 1D Spring ---> 1D Spring Property Inputs Explaination?

    Usually you search 'FATAL' in the f06 file, and the first finding will give you the hint about your problem. In your case, it is '*** USER FATAL MESSAGE 9994 (BULKPM) MAT1 with MID=2 near line 120381 User information: E:3.40282+38 is an illegal real value.' Go check the E (Young's modulus)...
  2. hezhj2000

    Nastran SOL700 problem

    Patran needs you to tell which version of Nastran you want to use. It has a default one (for example Nastran 2012). And you probably are using another one (for example Nastran 2013). You can use 'Translation Parameters' in the Analysis form to check what is the default one Patran is using. And...
  3. hezhj2000

    Building contact between two solids

    1. usually contact body with finer mesh and softer material should be the slave. 2. from you description, the contact between the 2 bodies is touching contact. 3. These options determines the mater/slave. If you are not sure, you should use Automatic. 4. You should read Nastran Quick Reference...
  4. hezhj2000

    basic problem with MSC.Nastran input deck

    You need to open the f06 file, search 'fatal', and paste the fatal error message Nastran reports.
  5. hezhj2000

    SOL 400: "NSM" IN PSHELL or PCOMP CARDS NOT COMPUTED

    Thanks for the update.
  6. hezhj2000

    Building contact between two solids

    You should use 3D option. You don't need to select Contact Area. You should define 2 contact bodies, and select 1 solid for 1 contact body. After you define 2 contact bodies, in the subcase definition, you can define contact table. And you should deactivate self contact (contact between 1 and...
  7. hezhj2000

    planar deformation needed

    constrain the vertical direction DOF (Z)?
  8. hezhj2000

    SOL 400: "NSM" IN PSHELL or PCOMP CARDS NOT COMPUTED

    It sounds like a bug. You should probably report it to MSC.
  9. hezhj2000

    Very different displacements in Linear and Non-Linear Analysis

    Not sure about your question. Results without contact is different from results with contact. That sounds reasonable to me.
  10. hezhj2000

    Can't View Title in Viewport

    I had no such problem. If you change the 'Title Editor' settings in the 'Results' tab, will that make the title come up?
  11. hezhj2000

    Can't View Title in Viewport

    Have you tried 'Display\Titles' menu?
  12. hezhj2000

    nastran fatal error 316

    For each layer of your PCOMP with ID 14, there is no material ID.
  13. hezhj2000

    composite progressive failure

    You forgot to assign the material to the elements?
  14. hezhj2000

    composite progressive failure analysis in Patran / Nastran SOL 600

    I don't use Sol 600. I usually just use Marc. So I don't know the answer. But you can probably try other types of forces, if they are available in the results.
  15. hezhj2000

    composite progressive failure analysis in Patran / Nastran SOL 600

    Check the damage plot in your structure to determine the first ply failure load. Check this video starting from 9 minutes: https://www.youtube.com/watch?v=XHJvlwVmMJs. For ultimate failure load, if you have the load-deflection curve, why can't you find that from the curve?
  16. hezhj2000

    Inertia Relief

    Add 'param,inrel,-2' in your bulk data section to activate inertia relief.
  17. hezhj2000

    composite progressive failure analysis in Patran / Nastran SOL 600

    You need to post-process the t16 file in Patran. In Patran, you can use XY-Plot in the Results tab to create load deflection curve.
  18. hezhj2000

    "Zero thickness" error in SOL 600

    There should be some problem in the shell element property definition. You need to check those entries.
  19. hezhj2000

    Different thickness field for each shell side

    So you want to use a single layer of shell elements, even for the area with holes?
  20. hezhj2000

    "Zero thickness" error in SOL 600

    Did this error come up before the nonlinear iteration or in the middle of the iteration?

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