基于水弹性力学的SWATH船结构振动与噪声分析  

Analysis of the structural vibration and noise radiation of a SWATH ship based on hydroelastic method

作　　者：叶永林[1] 吴有生[1] 邹明松[1] 倪其军[1] 

机构地区：[1]中国船舶科学研究中心,江苏无锡214082

出　　处：《船舶力学》2013年第4期430-438,共9页Journal of Ship Mechanics

摘　　要：文章以三维水弹性力学理论为基础,提出了综合考虑波浪与设备机械激励下的船体结构振动分析方法,并对小水线面双体船的船体振动响应特性进行了分析,预报了该船体的固有频率特性,及在试验工况与航行时受发电机激励下的局部结构振动响应,并与实船测量结果进行了对比。结果表明,该方法对于船体总振动、及船体受机械激励作用下的强迫振动分析预报是有效的,可应用于工程设计。同时,利用水弹性方法对SWATH船在波浪中的辐射噪声与近场噪声进行了预报,数值预报结果与试验进行了对比,表明该方法在噪声分析中也是可行的。The structural vibration and noise radiation of the ship in wave is achieved synthetically to con sider the wave force and mechanical exciting force based on the 3D hydroelasticity method. The structural vibration response characteristics of SWATH ship are analyzed. The natural frequency characteristics of the hull and the local structural vibration response excited by diesel generator are predicted when in 0 kn and in navigation. The predicted results are compared with the test results of the ship, and illustrate that the analysis method is effective for the prediction of overall vibration and forced vibration of the hull excited by mechanical force. The near and far field underwater noise radiations of the SWATH ship are predicted by the hydroelasticity method also. The predictions are compared with the measured results, showing that the present method is also rational for the noise radiation analysis.

关 键 词：水弹性力学 小水线面双体船 机械激励 振动响应 辐射噪声 

分 类 号：U661.44[交通运输工程—船舶及航道工程] TV131.2[交通运输工程—船舶与海洋工程]