Models of the acoustic radiation and transmission properties of complex trimmed structures

A number of advances have been made recently in the development of a hybrid method for rigorously coupling finite element and statistical energy analysis descriptions of the dynamics of a vibro‐acoustic system. The method provides an efficient way to analyze the acoustic radiation and transmission properties of a complex structure across a broad frequency range. In this paper, two case studies of engine components are used to validate the ‘‘hybrid area junction’’ formulation for coupling FE structures with trimmed SEA fluids, and to demonstrate the use of the method in a design process.