側辺固定の波動ブラックホールを含む制振構造のFEM援用SEA振動応答解析

抄録

This paper describes hybrid vibration analysis using Statistical Energy Analysis (SEA) and FEM for two panels connected in L-shape with an acoustic black hole having a damping layer. The side edges in the L structure are fixed. And the other edges have free boundaries. Usually, modal damping is affected by not only shape of panels but also their boundaries. Thus, to account for couplings in damping between substructures, internal loss factors are evaluated using FEM and MSE (Modal Strain Energy) method. To clarify wave propagation, coupling loss factors are identified. Effects of the acoustic black hole with fixed edges on these SEA parameters are studied.