Abstract
Energy flow models are derived for interconnected structures in tems of both modal and structural subsystems. The principal goal of this analysis is to develop a deterministic foundation for energy flow analysis that clarifies assumptions under which statistical energy analysis (SEA) predictions are valid. Three sources of error involving modal incoherence, pairwise coupling loss factor and blocked modal energy are identified. Assumptions under which these terms are negligible are identified and compared to standard SEA assumptions.
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