How to Find CG, MI, Ztop and Zbottom of the I section shown below?

Discussion in 'Boat Design' started by zalads, Jul 23, 2009.

  1. zalads
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    zalads New Member

    Please explaing me how to find CG, MI, Ztop and Zbottom of the I section shown as attached here with.
     

    Attached Files:

  2. Ad Hoc
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    Ad Hoc Naval Architect

    Have you begun to study basic structures yet?
     
  3. zalads
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    zalads New Member

    Yes, just started my studies can u pls advise me how to do this
     
  4. Ad Hoc
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    Ad Hoc Naval Architect

    Well first, you need to start a table with seven columns with these headings:

    item, area (a), lever (h), ah, ah^2, k^2, ak^2

    Then find the area, the lever of each item about a fix datum. Then calculate the 2nd moment of area for each item and finally its own inertia about its own axis. Add up the columns and by parallel axis theorem move the axis from assumed datum to the neutral axis.

    If this does not make sense, then you require much more reading before advising further.
     
  5. Greybarn
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    Greybarn Junior Member

    This is a second year of college level engineering problem. What year are you in your studies?
     
  6. gonzo
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    gonzo Senior Member

    Is the material homogenous?
     

  7. Yellowjacket
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    Yellowjacket Senior Member

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