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. If you are only interested in MOLA-specific information, then click on your area of interest in the list. If you have any questions, then you can contact me at the e-mail address located at the bottom of this page.

Random vibration input specification level

When random analysis or testing is performed, an input spec is needed. It gives the frequency range, e.g., 20-2000Hz, and it gives the Power Spectral Density (PSD) level, i.e., the magnitude of the random input. This spec tells the PSD level of random vibration that was input to the MOLA instrument finite element model.

Random Analysis Component Response Results

In this set of pages you will find the response charts of the following MOLA components:

An exploded view of the model is available to identify the components.

MOLA random vibration force recovery

In this set of pages you will find the force response chart of the MOLA instrument. This chart shows the force acting at the spacecraft/instrument interface that is caused by the random vibration of the MOLA instrument.

What is Random Vibration?

Why do we care about random vibration?

What causes random vibration?

Force Limiting, Notching and random vibration testing

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Goddard MeatballThis page is maintained by Ryan Simmons, at
This page was last updated on January 22, 1996.