COUPLING LOSS FACTORS ESTIMATION OF ALUMINUM HONEYCOMB SANDWICH STRUCTURES USING DFM/FEM
Kong Xian-ren 1 WANG Ying-cheng 2 ZHANG Hong-lian 2
1. Research Institute of satellite Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150080, China;
2. Beijing Institude of Structure & Environment Engineering Beijing, 150080, China; China Aerospace Science of Space Technology Aerospace dongfanghong satellite co., LTD
Abstract：The accurate estimate of Coupling Loss Factor is one of the most key steps in a SEA prediction work for high frequency vibration response of honeycomb sandwich structures. Coupling loss factors estimation of aluminum honeycomb sandwich structures using Dual Formulation Method/Finite Element Method(DFM/FEM) is studied. The numerical simulation result of demonstrates that the proposed method is feasible and efficient. Also vibration experiment on a L-shaped aluminum honeycomb sandwich plates is processed, and a power input method is used to identify the Coupling Loss Factor of the experimental plates. the results of DFM/FEM and a power input method are in agreement, which further verify Coupling loss factors estimation of aluminum honeycomb sandwich structures using DFM/FEM is feasible. The method extended the SEA in complex structures.
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