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 (PSD) is the usual way to specify random vibration.
Test specification can be established from real environment measurements using a PSD envelop or a fatigue damage equivalence criterion (Extreme Response Spectrum and Fatigue Damage Spectrum).
See also
- Random noise
External links
- NASA Goddard website about random vibration analysis
- NASA Mars Orbiter website
- Lalanne, C., Mechanical Vibration and Shock Analysis. Volume 3:
Random Vibration Analysis Technology in ANSYS Mechanical Engineering ...
ANSYS Mechanical Solutions - Technology Random Vibration Analyses. Used to determine the response of structures to random or time-dependent loading conditions such as earthquakes ...
MOLA Random Vibration Analysis
If you are interested in learning some basics about random vibration analysis, then feel free to read on or make the jump to the fourth link below.
Vibration
Ask the Expert - Random Vibration Analysis. Wednesday, October 14, 2009 9:00 A.M. EDT, 1:00 P.M. GMT. Wednesday, November 11, 2009 4:00 P.M. EDT, 9:00 P.M. GMT
Wayne Tustin's text “Random Vibration & Shock Testing, Measurement ...
Wayne Tustin’s minimal-mathematics, minimal-theory hardbound text “Random Vibration & Shock Testing, Measurement, Analysis & Calibration” has 444 4-color printed pages and ...
FEMCI Book - Random Vibration Analysis Information
Random Vibration Analysis. These pages were created to assist you when doing random vibration analysis. Random Vibration Specification Magnitude Equations
Random vibration - Wikipedia, the free encyclopedia
NASA Goddard website about random vibration analysis; NASA Mars Orbiter website [Random Vibrations, Spectral & Wavelet Analysis , D.E. Newland] Lalanne, C., Mechanical Vibration and ...
Random Vibration Analysis of Dual 101 EM Assembly
Page 1 of 9 Random Vibration Analysis of Dual 101 EM Assembly Carl Cheng Ph. D. , Jeff Crull Bjorksten | bit 7, Madison, Wisconsin Wes Marcus, Pete Kjeer, Ron Hansen Minnkota ...
Linear Dynamic Analysis Types: Random Vibration (Modal Superposition ...
The vibration generated in vehicles from motors, road conditions or from rocket and jet engines, to name a few sources, is a combination of many frequencies and has a ...
Random vibration analysis of antenna cabin
The antenna is an extremely sensitive and delicate part of a satellite. Because of this it is generally placed inside a cabin when being transported and when it is deployed in ...
Amazon.com: Random Vibration and Spectral Analysis/Vibrations ...
Amazon.com: Random Vibration and Spectral Analysis/Vibrations aléatoires et analyse spectral (Solid Mechanics and Its Applications) (English and French Edition) (9780792330363): A ...