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Stress due to Vibration

  • 02-09-2012 11:06AM
    #1
    bradyle
    Registered Users, Registered Users 2 Posts: 353 ✭✭


    Hi, this is probably a very easy question but I'm wondering if anyone can tell me how you calculate stress that occurs due to random vibration.

    I managed to not study vibrations throughout all of my degree and am now trying to understand the results for the random vibration test I did in ANSYS.

    Is the force calculated by hooke's law and then just the normal equation to find stress?

    Any help would be greatly appreciated!
    Thanks


Comments

  • #2
    Turbulent Bill
    Registered Users, Registered Users 2, Paid Member Posts: 1,642 ✭✭✭Turbulent Bill


    You can relate the peak or RMS accelerations/displacements to the stress, but to be honest I don't remember the details. There's a fundamental relationship between frequency, displacement etc. - any basic vibration textbook will have this.

    I'd also repeat the ANSYS analysis with a fixed-frequency excitation, much easier to relate this to a textbook example than a random one.


  • #3
    brownacid
    Registered Users, Registered Users 2 Posts: 484 ✭✭brownacid


    What kind of structure is it?


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