Statistical Energy Analysis and Finite Elements
نویسنده
چکیده
SEA and FEA have become established engineering methods for noise and vibration analysis. They are contrasting approaches targeted at the high and low frequency ends of the analysis spectrum. This paper concerns the use of FE methods in SEA. Attention is focussed on two areas. The first concerns the use of FE models to predict SEA parameters, such as coupling loss factors. The second area concerns the coupling of subsystems described by FE and SEA models. This is an important “mid-frequency” vibration issue, and arises, for example, when stiff, low mode-count subsystems are connected to flexible, high mode-count subsystems. The different subsystems are suited to different modelling methods, but coupling the models is problematical.
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