基于三维水弹性力学的浮体结构机械阻抗分析  

Mechanical Impedance Analysis by 3D Hydroelasticity Method

作　　者：叶永林[1] 邹明松[1] 周金华[2] 吴有生[1] 尤国红[1] 

机构地区：[1]中国船舶科学研究中心,无锡214082 [2]上海交通大学,上海200030

出　　处：《中国造船》2011年第1期53-60,共8页Shipbuilding of China

摘　　要：水中浮体结构的阻抗反应了其湿结构系统本身的固有特性。采用模态分析方法,能以较少的自由度,全面而精确地描述船体复杂结构的振动特性,从而大大简化分析与计算。文中基于三维水弹性力学分析方法,采用模态叠加原理,对机械阻抗进行了计算,分析了浮体湿结构在水中的动态特性,并讨论了自由液面和水介质压缩性的影响。Mechanical impedance of ship hull in waves represents the inhere characteristics of the wet hull.The modal analysis method can describe vibration characteristics of the ship＇s complex structure accurately and comprehensively,as well as can well simplify the the analysis process.In this paper,the mechanical impedance of ship hull in waves is studied,its dynamic characteristics is analyzed,and the effect of the free surface and the compresibility of the fluid medium on the mechanical impedance is discussed.

关 键 词：湿结构 三维水弹性 机械阻抗 模态分析 

分 类 号：U661.44[交通运输工程—船舶及航道工程]