管路激励下邮轮典型板架结构的声振特性

Vibration and Noise Characteristics of Typical Plate Structure of Cruise Ship under Pipeline Excitation

为合理评估邮轮结构的振动和噪声,并建立其振动噪声预报方法,需掌握邮轮上层建筑中典型开孔高腹板架结构的声振特性。采用试验与数值仿真相结合的方法,分析典型开孔高腹板架结构的振动特性及其在管路激励下的声振特性,探讨板架结构边界条件、管内流速和管路材料等因素对开孔高腹板架结构声振特性的影响规律。研究得到的邮轮典型开孔高腹板架结构声振特性的影响因素和影响规律,可供邮轮结构振动噪声预报和舒适度设计参考。

In order to reasonably evaluate the vibration and noise of cruise ship structure and establish the prediction method of vibration and noise,it is necessary to master the acoustic vibration characteristics of typical open-hole high-web frame structure in cruise ship superstructure.The vibration characteristics of a typical high-web structure with open holes and the acoustic vibration characteristics of the structure under pipeline excitation are analyzed by the method of experimental and numerical simulation,and the influence laws of the boundary conditions of the plate structure,the flow velocity in the pipe and the pipeline material on the acoustic vibration characteristics of high-web structure with open holes are discussed.The influencing factors and laws of the acoustic vibration characteristics of the typical high-web structure with open holes are obtained,which can provide reference for the vibration noise prediction and comfort design of the cruise structure.