Random vibration
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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.
[edit] See also
[edit] External links
- NASA Goddard website about random vibration analysis
- NASA Mars Orbiter website
- [Random Vibrations, Spectral & Wavelet Analysis , D.E. Newland]
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