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  1. JeffPW

    Huth Formula for Fastener Flexibility

    Following up on rb1957's comments about my on-line calculator at "http://www.p-over-a.co.uk/toolbox/Huth.aspx", the webpage has been updated to clearly show the formulation used, which is from Huth H, "Zum Einfluβ der Nietnachgiebigkeit mehrreihiger Nietverbindungen auf die Lastübertragungs und...
  2. JeffPW

    Importing BDF files

    What does the log file say? Jeff W www.p-over-a.co.uk
  3. JeffPW

    Modeling fasteners with CBUSH or CFAST

    In my experience of modelling joints, a simplified one-dimensional model is used to obtain the shear load in each fastener and the bypass load in each plate. The shear loads can then be compared with the joint allowables for static strength. Jeff W www.p-over-a.co.uk
  4. JeffPW

    "Find" Output Notation

    From the jpg and mathcad files you provided you are trying to solve for three variables (theta, Rx and L) and assign the result to one variable. The attached Mathcad file shows how to solve the three equations you provided using the solve block. I solved this using Mathcad and then noticed the...
  5. JeffPW

    "Find" Output Notation

    I would suggest you turn your computer off and try a pencil and a piece of paper. L can be solved for independently in the third equation. The solution for theta and Rx in the first two equations is trivial. Common sense is cheaper than a Mathcad licence. Jeff W www.p-over-a.co.uk
  6. JeffPW

    MSC Patran / Nastran Upgrade

    I've used both FEMAP and Patran for Aerospace applications. I would agree that Patran is clunky and the interface is unintuitive whereas FEMAP's Windows style interface is easier to pick up. FEMAP can be integrated with VBA although I found the documentation for this to be lacking. On the...

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