Statistical Energy Analysis, assumptions and validity
Résumé
This study outlines the question of validity of statistical energy analysis with regard to its assumptions.
We discuss the necessity of four assumptions: rain-on-the-roof excitation, weak
coupling, large number of modes and light damping. We show that when all of these assumptions
are satisfied, statistical energy analysis provides a satisfactory result but when one of
these assumptions is violated, statistical energy analysis prediction presents a discrepancy compared
to a reference calculation. The discussion is illustrated with a simple example of coupled
plates.