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Natural Frequency

  1. Feb 25, 2005 #1
    What is exact procedure to find the Natural Frequency of a structure....i.e a cube (box) of Honeycomb Sandwich Panels.....i have simulated the Modal Analysis in Ansys...there i got the natural frequency of very low amount ....almost 0.3Hz for First Mode,0.5 Hz for Second Mode and so on......i think it is very less amount .....How can i Practically Verify this Natural Frequency...plz guide me in this area....what about Sine Sweep Test on Shaker....Can i do it on Impact Testing(Hammer+Accelerometer+Signal Analyzer+Data Accquisition ) ?
    Plz tell me some useful links on web or Standard Method ASTM for verifying Natural Frequency of Structure......
    What about Mathematical Modeling of this Cubical Box.
  2. jcsd
  3. Mar 8, 2005 #2

    No Reply till yet????
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