水下航行器声振特性的统计能量法研究  

Research on Vibration and Acoustic Radiation of the SubmarineStructure with SEA Method

作　　者：童宗鹏[1] 王国治[2] 张志谊[1] 华宏星[1] 

机构地区：[1]上海交通大学振动冲击噪声国家重点实验室,上海200240 [2]华东船舶工业学院机械与动力工程系,江苏镇江212003

出　　处：《噪声与振动控制》2005年第1期29-32,共4页Noise and Vibration Control

摘　　要：针对有限元法和边界元法难以分析结构的中高频声振特性,采用统计能量分析方法,建立了带动力设备的水下水下航行器结构机械噪声预报模型。通过理论和试验相结合的方法确定水下航行器结构统计能量分析模型的基本参数,对水下航行器结构在宽频带范围内的水下振动和声辐射规律进行了分析与研究。Based on the submarine structure, the vibration and acoustic radiation behavior of the submarine is studied with SEA method. In this paper, a fluid-structural coupling model, including shell structure, vibration isolator, engine and water, is created. Acceleration level and radiated acoustic pressure are calculated using different structural parameters of vibration isolator and cylinder shell. The results of vibration transmission and acoustic radiation in broad frequency band for the submarine is obtained by analysis and experiment. The analysis method can be further used for acoustic prediction and design of a real submarine.

关 键 词：振动与波 水下航行器 声辐射 统计能量分析 噪声预报 

分 类 号：TB533[理学—物理] U661[理学—声学]