中国舰船研究2018，Vol.13Issue(1)：17-23,7.DOI:10.3969/j.issn.1673-3185.2018.01.003
后艉轴承刚度对潜艇结构振动与声辐射的影响
Influence of stiffness constant of stern bearing on vibration and acoustic radiation of whole submarine
摘要
Abstract
[Objectives]This paper studies the influence of the stiffness constant of a stern bearing on the vibration and acoustic radiation of a whole submarine.[Methods]Based on the form of SUBOFF,a whole submarine model is established in which the structures of the propeller and shaft are first formed in solid elements. Through calculating and comparing the structural vibration and acoustic radiation driven by a vertically excited force,the influence of the elastic coefficient of the stern bearing on the vibroacoustic of the overall submarine structure is mainly considered.[Results]It is demonstrated that the reduction of the elastic coefficient of the stern bearing leads to the convergence of structural vibration and acoustic radiation to the second order overall bending modal frequency,and the frequency gradually becomes lower,which can benefit the vibroacoustic reduction of submarines at frequencies higher than the second order overall bending modal frequency.[Conclusions]These results provide a reference for the acoustic design of submarine structures.关键词
艉轴承/流固耦合/振动/辐射噪声Key words
stern bearing/fluid-structural interaction/vibration/acoustic radiation分类
交通工程引用本文复制引用
王路才,周其斗,杨常青..后艉轴承刚度对潜艇结构振动与声辐射的影响[J].中国舰船研究,2018,13(1):17-23,7.基金项目
国家部委基金资助项目 （）
