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  1. Chris31

    Cbeam in tension and Cquad4 in compression?

    Quick question for anyone that has any insight. Fuselage stringer is modelled as a beam and the skin as a plate. The beams have offsets. When I run a pressure case only, the skin goes into tension and the beam goes into compression. Anyone have any ideas as to how this can happen? GPF...
  2. Chris31

    Cbeam in tension and Cquad4 in compression?

    Quick question for anyone that has any insight. Fuselage stringer is modelled as a beam and the skin as a plate. The beams have offsets. When I run a pressure case only, the skin goes into tension and the beam goes into compression. Anyone have any ideas as to how this can happen? GPF...
  3. Chris31

    Fuselage structure under pressure

    Quick question for anyone that has any insight. Fuselage stringer is modelled as a beam and the skin as a plate. The beams have offsets. When I run a pressure case only, the skin goes into tension and the beam goes into compression. Anyone have any ideas as to how this can happen? GPF...
  4. Chris31

    Searching for and returning output from a Nastran .f06 file

    Hi all, Relatively new to matlab - I have a question for everyone and would like to hear other opinions on how to get what I am trying to do if you have better ideas. I would like to write a short script that would search a series of nastran output (f06) files, find a given subcase and...
  5. Chris31

    Using Matlab to extract data from FE output file

    Can anyone offer suggestions on where to look for the following: I'm trying to write a script that will search through a Finite Element output file and print axial force values for specific element ID numbers. Any help is greatly appreciated. Thanks, Chris
  6. Chris31

    Help using the FIND function

    Hi all, Quick question - I'm tryin to implement the following line of code: inx01=find(X1==bt01); and I get the error ??? Error using ==> find Second argument must be a positive scalar integer. If I replace bt01 with the value it works, but I need to leave this as bt01. Is there a way to...
  7. Chris31

    3d plot help

    Hi all, Most likely a simple problem but none the less...is there a way to plot vectors X and Y such that a grid plate is created and then Z vector is the vertical distribution of "forces" at these X,Y points depicted as cones or bars or something? X,Y and Z are of the same length. Thanks for...
  8. Chris31

    Patran Database - Unix to Windows transfer problems

    Hi all, I am trying to open a .db file in Windows Patran 2005r3 that was created in some older version on a Unix machine. When I try to open it, a message states that the file will need to be converted on the old system before moving it to Windows. I have tried using the p3convert utility and...

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