Cotoni V., Shorter P., Kuba T.

Statistical Energy Analysis is a well-proven technique to predict the vibro-acoustic response of complex engineering systems to high frequency broadband excitation. It has been successfully applied for many years to air-borne transmission problems in the automotive and aerospace industries. Although much work has been done to tackle the structure-borne applications, SEA remains here of limited use because of the difficulty to predict the coupling loss factor of the complex junctions encountered between structural subsystems. This paper demonstrates how the junctions between subsystems can be described with FE and seamlessly incorporated into the SEA analysis using a Hybrid FE-SEA approach. The modeling process is illustrated on a mockup of satellite structure, and the improved SEA prediction is compared to test results.