A new efficient method for the simulation of sound radiation from large vibrating structures with the Finite Element Method (FEM) is proposed. The acoustic radiation from the major radiating panels is simulated separately for each panel, using customized fluid domains that are weakly coupled to the vibrating structure. Thereby, a significant reduction of the model order is achieved, maintaining at the same time a high reliability of results for practical application. The pressure levels at arbitrary far-field microphone positions can be efficiently computed from the Equivalent Radiated Power functions that characterize the structural vibrations of the radiating panels.

中文翻译：

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用有限元法模拟大型结构声辐射的一种有效方法

提出了一种利用有限元法 (FEM) 模拟大型振动结构声辐射的新有效方法。使用与振动结构弱耦合的定制流体域，针对每个面板分别模拟来自主要辐射面板的声辐射。因此，实现了模型阶数的显着降低，同时保持了实际应用结果的高可靠性。可以根据等效辐射功率函数有效地计算任意远场麦克风位置的压力水平，该函数表征辐射面板的结构振动。