部分構造を対象としたFEMによるSEAパラメータの評価 : FEM-SEAの提案(機械力学,計測,自動制御)

概要

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This paper presents a method by using FEM for estimating SEA coupling loss factors, which is called "FEM-SEA". The FEM-SEA is a tool for designing structure in detail although analytical SEA can not reach the detail design. The FEM-SEA requires a FEM model which is corresponded to a part of structures including the junction and the neighbor subsystems. The FEM calculation in carried out to entimate internal and coupling loss factors. The nature of the FEM-SEA is dependent on the boundary conditions of the FEM model which are connected with the other subsystems in the whole system. Two kinds of the boundary conditions are discussed to show that the estimating loss factors are not dependent on the conditions at least in the same applicapability as the analytical SEA. Further, it is also shown that the FEM-SEA can be applied more widely than the analytical SEA in case that the boundary condition set is similar to the actual conditions with the other subsystems. As a result, the FEM-SEA supplies the capability to design structure in detail and to apply widely than the analytical SEA does.
社団法人日本機械学会の論文
2008-11-25