Evaluation of Dynamic Characteristic of Structural Panels with Statistical Energy Analysis
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Abstract
An implementation in a typical L joined plate system has been proposed to investigate the effects of damping and coupling on vibration energy transmission through plates junction. A combined statistical energy analysis (SEA) and finite element method (FEM) approach characterizing the dynamic behavior of the panels has been considered. Within the procedure, the wave approach has been used to obtain the coupling loss factor (CLF) and the apparent coupling loss factor (ACLF) obtained by experimental statistical energy analysis (ESEA) together with FEM. The influence of the frequency spectrum, excitation, damping, and panel edge boundary conditions on the coupling parameters has been observed. It is demonstrated in the ESEA/FEM procedure that the boundary conditions influence the coupling factors more significantly at low frequencies, and for the higher values of damping used the results approximate those of the wave approach, which in general tends to occur at high frequencies. Variations in the energy transmission is observed in agreement with the coupling changes.
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