【摘要】 加筋板结构因其具有较高的结构刚度和强度，被广泛应用于船舶结构设计。本文在加筋板分频段分析模型基础上结合声空腔子系统统计能量分析（SEA）参数计算方法，建立了加筋板结构与声空腔间的辐射效率计算模型，并考虑流体负载的影响，从而获得了水下加筋板–声空腔耦合损耗因子计算方法，进一步使用SEA商用软件对计算方法进行了验证。研究分析了流体负载和结构加筋对耦合特性的影响，结果表明：流体负载和结构加筋主要影响耦合结构截止频率以下频段的辐射效率和耦合损耗因子，对截止频率以上的频段影响较小。研究成果可为船舶舱室噪声预报与声学设计提供理论支撑。更多还原

【Abstract】 Ribbed plate structures are widely used in ship structural design due to their high structural stiffness and strength. In this paper, based on the frequency band analysis model of ribbed plates and the statistical energy analysis(SEA) parameter calculation method of the acoustic cavity subsystem, a calculation model of the radiation efficiency between the ribbed plate structure and the acoustic cavity was established,and the influence of fluid load was taken into account, thus the method for calculating the coupling loss factor of an underwater ribbed plate with an acoustic cavity was obtained. Further, the calculation method was verified by using SEA commercial software. The effects of fluid load and structural reinforcement on the coupling characteristics were studied and analyzed. The results show that the fluid load and structural reinforcement mainly affect the radiation efficiency and coupling loss factor in the frequency band below the cut-off frequency of the coupling structure, and have little effect on that in the frequency band above the cutoff frequency. The research results of this paper can provide theoretical support for the prediction of ship cabin noise and acoustic design.更多还原