STATISTICAL ENERGY ANALYSIS: CORRELATION BETWEEN DIFFUSE FIELD AND ENERGY EQUIPARTITION
Résumé
This paper studies two concepts used in Statistical Energy Analysis (SEA): the diffuse field and the energy equipartition. To study the equivalence between these concepts the example of a simply supported plate is taken. First, the degree of diffuseness of the field is quantified by a simple criterion. Then, extracting information from an analytical model, the standard deviation of modal energies is evaluated. Two maps are drawn on the frequency-damping plane in both cases. These maps allow correlating concepts of diffuse field and energy equipartition and validity diagrams defined by Le Bot.
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