Power Spectral Density - Vibrationdata Blog

Synthesize an Acceleration Time History to Satisfy a Power Spectral Density

October 13, 2012 by admin

The following Matlab files are given at: psd_syn_revD.zip psd_syn.m is the main Matlab script. The remaining scripts in the zip file are supporting functions. It synthesizes an acceleration time history to satisfy a power spectral density function. It also calculates the corresponding velocity and displacement… Read more

Enveloping Nonstationary Random Vibration Data

March 10, 2012 by admin

Launch vehicle avionics components must be designed and tested to withstand random vibration environments. These environments are often derived from flight accelerometer data of previous vehicles. This data tends to be nonstationary as shown in the figure above. The typical method for post-processing is to… Read more