抄録
The two vibration analysis methods which are Modal Analysis used in the low frequency and Statistical Energy Analysis (SEA) used in the high frequency are used as to the target frequency. The method to evaluate which vibration analysis procedure is used is discussed. Previous method needs mode density which is introduced by simulation, but this method can determine by only experiment without simulation. First showing the relationship between Motion Equation used in Modal Analysis and Energy of SEA. And in analysis model, the relationship is validated. Next, proposing the method using the ratio of real part of power and imaginary part of that and defining the middle frequency range. At last, the method is applied to the experiment.
