Calculate Vibration Amplitude, Frequency Range for Derrick Drilling

AI Thread Summary
A vibration analysis is needed for a 240-foot steel drilling Derrick used in oil drilling, focusing on calculating vibration amplitude, frequency range, and expected acceleration during various operational modes. The expectation is that high amplitude vibrations exceeding 3mm at a frequency range of 0-50 Hz will occur under operating conditions. Clarification is sought on whether the calculations should be based on measurements or model-driven data. Understanding the relationship between acceleration, velocity, and displacement is crucial for accurate analysis. Detailed objectives for the vibration analysis are requested to provide more tailored guidance.
yakin28
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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?
 
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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

please detail more wht u want to achieve
 

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