Random vibration

Random vibration

In mechanical engineering, random vibration is motion which is non-deterministic, meaning that future behavior cannot be precisely predicted. The randomness is a characteristic of the excitation or input, not the mode shapes or natural frequencies. Some common examples include an automobile riding on a rough road, wave height on the water or the load induced on an airplane wing during flight. Structural response to random vibration is usually treated using statistical or probabilistic approaches.

A measurement of the power spectral density is the usual way to specify random vibration.

See also

* Random noise

External links

* [http://femci.gsfc.nasa.gov/random/ NASA Goddard website about random vibration analysis]
* [http://analyst.gsfc.nasa.gov/ryan/MOLA/random.html NASA Mars Orbiter website]
* [Random Vibrations, Spectral & Wavelet Analysis , D.E. Newland]


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