Abstract
This paper describes a structural adjustment method for subsystems bringing desired coupling loss factors (CLF) in statistical energy analysis (SEA). We had developed the structural design process based on the experimental SEA in order to reduce structure-borne sound in machinery. The process in a few days identifies which CLF should be changed for reducing noise radiated from machinery. The adjustment method is implemented using the finite element method and optimization algorithms. The finite element model represents a part of a whole system and comprises a junction and the neighboring SEA subsystems associated with the CLF to be changed. In this paper, the proposed method for the structural adjustment was demonstrated. The adjustment method was shown to work well in identifying a structural design of the subsystems which achieves the desired CLF.
