NAUSEA and the Principle of Supplementarity of Damping and Isolation in Noise Control

摘要

New approaches and uses of the statistical energy analysis (NAUSEA) have been considered and developed in recent months. The advances were made possible in that the requirement, in the olde statistical energy analysis, that the dynamic systems be highly reverberant and the couplings between the dynamic systems need be conservative could be relaxed in the new approaches. With this relaxation a large number of new uses have become available for analytical consideration in terms of the statistical energy analysis (SEA). A brief discussion and simple examples that relate to these recent advances will be presented. A delightful aspect of SEA, that is accentuated by NAUSEA, is that it establishes the principle of supplementarity of damping and isolation. Briefly, the principle states that in situations in which the application of either damping or isolation does not perform satisfactorily in controlling a noise problem, the supplemental application of dampling and isolation may perform effectively. The principle will be simple exemplified and discussed. (Author)