Method for solving sound power sensitivity based on the theory of acoustic radiation modes

The sound power sensitivity analysis reveals the relationship between the radiation power caused by structure vibration and the design variables of structure. A new method for solving sound power sensitivity was presented by using acoustic radiation mode model to deal with the sound radiation and using finite element model to deal with the structure vibration. Taking as an example the plate with infinite baffled panel, the feasibility of the method was verified by comparing the results with those of a common method of using Rayleigh integral model in dealing with the radiation behavior.