Overview of coupling loss factors for damped and undamped simple oscillators

Abstract

This paper examines the coupling loss factor, which is an important parameter in the field of statistical energy analysis. A comparison is made between damped and undamped systems of two identical coupled oscillators using modal analysis. The oscillator energies and the power flow between oscillators are used to examine the transient coupling loss factors for the damped and undamped systems. Comparisons are drawn between the transient coupling loss factors and the steady-state coupling loss factor of classical SEA. The undamped transient coupling loss factor is determined numerically, since an analytical solution does not exist. It is shown that multiple formulations can be used to determine the transient coupling loss factor, and that certain formulations are preferable for moderately to strongly coupled systems.