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Recent content by jbaylor

  1. jbaylor

    Importing Load Steps from Neutral Files

    generaluday, Did you figure out a solution for combining your CFdesign NEU files? If not, let me know. I just spent the past few weeks parsing and writing NEU files so have a pretty good handle on the format. I might be able to help with advice or a tool to combine them. Jeff...
  2. jbaylor

    strain-life parameters

    Hello, Does anyone know the ASTM tests I need to do to obtain the strain-life parameters used in ANSYS? It is a thermoplastic polymer at room temperature. Thanks, Jeff ------------------------- http://www.bConverged.com
  3. jbaylor

    5Cr-Mo-V fatigue data (S/N)

    thank you. It looks like I could use the one curve for the H50 as un-notched (Kt=1) data. I also found some data in the Aerospace Structural Metals Handbook for a similar alloy.
  4. jbaylor

    5Cr-Mo-V fatigue data (S/N)

    Thanks for the reference. I will check it out.
  5. jbaylor

    5Cr-Mo-V fatigue data (S/N)

    Hello, I am looking for fatigue data (alternating or maximum stress vs. number of cycles) for 5Cr-Mo-V aircraft steel. Does anyone know of a good source? The fatigue data is not included in MMPDS-01. Thanks, Jeff
  6. jbaylor

    5Cr-Mo-V fatigue data (S/N)

    Hello, I am looking for fatigue data (alternating or maximum stress vs. number of cycles) for 5Cr-Mo-V aircraft steel. Does anyone know of a good source? The fatigue data is not included in MMPDS-01. Thanks, Jeff
  7. jbaylor

    Patran Accuracy

    If you are modeling an aircraft component with Patran and got the geometry in aircraft coordinates and in millimeters, the lack of significant figures would matter a great deal. With the first four or five significant figures common across the entire model, then there can only be two or three...
  8. jbaylor

    Mulitple Cores and FEA vendors - licensing

    With MPI, I am not sure there is a technical limit to how many processors you can run a job on. The limits are the FEA methods and software. I have run explicit FEA jobs across quite a few processors with decent efficiency. Implicit solvers do not have near the scalability though.
  9. jbaylor

    Mulitple Cores and FEA vendors - licensing

    This thread is timely. There was some discussion last week about running CalculiX in parallel on its forum. One of the solvers (SPOOLES) has a good implementation. It seems that some users are running a multi threaded version on a regular basis.
  10. jbaylor

    visualizing beams

    I had thought /ESHAPE was only valid when I had a SECTYPE defined. It does renders the beams quite well for EPLOT and PLNSOL (though not for PLESOL). Thank you for your help! Jeff
  11. jbaylor

    visualizing beams

    Is there any way to visualize beams with the ANSYS Utilty Menu as anything but a one pixel thick line? Are there any APDL commands to increase the line thickness? Thanks, Jeff
  12. jbaylor

    Good source that teaches how to do FEA by hand?

    I have written a few custom FEA applications and have found that Cook is a great reference to start with (ISBN 0471356050). If your purpose for this exercise is to understand FEA theory better, then I recommend picking this book up and writing an application with a few simple elements. You...
  13. jbaylor

    Free Finite Element Program

    Thanks for the feedback Steve and Greg. I hope it will be useful for you. Don't hesitate to email about bugs. It is tough to tell how much serious use the Windows version of CalculiX is getting, but there have been more than six downloads per day since 1.4 was released. There have been quite...
  14. jbaylor

    Free Finite Element Program

    Steelforbrains, You are right to be pessimistic (I think all engineers should be by nature). Like any other FEA application, there is a learning curve to using CalculiX. Much of what we are talking about here are issues regarding usability that one would encounter when installing and learning...
  15. jbaylor

    Free Finite Element Program

    steveyeung, The environment variable %HOME% is currently only used as the start up location when you open a new command window. When you run the "CalculiX Command" short cut in your start menu, does it start in your analysis data folder? If not, open a DOS shell and type: cd...

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