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Calculating Cyclic Energy from Acceleration (Relative)

  1. May 24, 2015 #1
    Hello,

    I am looking at relating two situations under which cyclic energy is applied to a material.

    Condition 1: A material has been subjected to a force of 1G at 0.1Hz for 47 days.
    Condition 2: The same material has been subjected to a force of 4.5G at 60Hz for 3600Seconds.

    Is it possible to calculate the energy applied under both conditions and relate them to one another (i.e. condition 1 has applied 200% the energy applied under condition 2)?
    or
    Can they be directly related to each other. For example: Under condition 1 the material experiences 406,080 cycles therefore a cumulative total of 406,080G. Under condition 2 the material experiences 216,000 cycles therefore a cumulative total of 972,000G. Therefore condition 2 experiences 240% times the energy condition 1 experiences.

    Is either of these possible or is there another way to relate them to one another?

    Thanks in advance.
    Munnaz
     
  2. jcsd
  3. May 24, 2015 #2

    Dale

    Staff: Mentor

    By "cyclic energy" do you mean that the material was spun in a centrifuge at the indicated acceleration?
     
  4. May 24, 2015 #3
    Hi Dale,

    Not centrifugal force. Condition 1 is on board a vessel in the ocean and the other is on a vibrating table. Both vertical accelerations.

    Regards Munnaz
     
  5. May 25, 2015 #4

    Dale

    Staff: Mentor

    So if the accelerations are vertical and they are cyclic then the magnitude must vary over time. So is the 1 g mentioned a peak-to-peak acceleration or what? Does the material free-fall down?

    Also, does the acceleration involve any "squeezing" or "flexing" of the material other than what happens simply due to gravity and being pushed up? In particular, the vibrating table does not seem like it could be done without some additional fixation and stress in the material.
     
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