Abstract:The vibration and sound radiation of the rectangular stiffened thin plate are investigated by using the method of the engineering equivalence. The average radiation efficiency formula of the rectangular stiffened plate driving by a simple harmonic point force is derived, and the numerical simulation and the experiment are implemented. The consistency of the theory analysis and the experiment showed the average radiation efficiency formula of the rectangular stiffened thin plate is similar to that of the uniform rectangular thin plate and circular thin plate, and they all are the weighted mean of the modal radiation efficiency. In the middle and high frequency band, the average radiation efficiency of the crisscross stiffened thin plate is maximal, the unidirectional stiffened thin plate takes the second place, and the uniform thin plate is the minimum. While in the low frequency band and above the critical frequency, there is few difference between them.
任惠娟1,盛美萍2. 加筋矩形薄板的平均声辐射效率[J]. 振动与冲击, 2016, 35(20): 167-171.
REN Hui-juan1,SHENG Mei-ping2. The Average Radiation Efficiency of a Rectangular Stiffened Thin Plate. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(20): 167-171.
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