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Vibration Amplitude

  1. Jun 5, 2012 #1
    I have a steel drilling Derrick 240 feet high mounted central to a ship, this is used for drilling for oil. Calculations have been done on the Derrick in regards to reaction forces in different modes of operation(drilling, transit etc). I need to do a vibration analysis of different points on this structure with the figures to hand.
    I am in the believe that high amplitude >3mm @ 0-50 Hz frequency is expected of this type of structure in operating conditions.
    How do I calculate the vibration amplitude, frequency range and expected acceleration?
     
  2. jcsd
  3. Jun 5, 2012 #2
    Hi Yakin,
    How do I calculate the vibration amplitude, frequency range and expected acceleration?

    means the acceleration amplitude? do you want a measurement or calculation driven from model.

    if you know the : accelartion you can retrieve the velocity and than the dis-placement
    question

    plz detail more wht u want to achieve
     
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