舵系统的颤振计算与分析  

Flutter calculation and analysis of rudder system

作　　者：肖清[1] 谢俊超[1] 陈东阳[2] XIAO Qing;XIE Junchao;CHEN Dongyang(China Ship Development and Design Center,Wuhan 430064,China;Institute of Launch Dynamics,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]中国舰船研究设计中心,湖北武汉430064 [2]南京理工大学发射动力学研究所,江苏南京210094

出　　处：《中国舰船研究》2016年第5期48-54,共7页Chinese Journal of Ship Research

摘　　要：为了研究舵系统水弹性特性,基于二元水翼线性颤振模型对舵系统的颤振特性进行数值计算与分析,计算结果与文献仿真数据较为吻合,验证了模型的有效性。利用该模型计算和分析频率比、重心、扭转刚度等线性参数对舵系统颤振的影响规律。此外,结合两自由度二元水翼任意运动时域水动力计算方法,对舵系统非线性颤振现象进行计算,获取传动间隙等因素对非线性颤振的影响规律。研究结果表明:减小质心到弹性轴的距离、增加舵的扭转刚度,有利于提高颤振速度;间隙等非线性因素的存在可能导致系统出现极限循环振荡,激发噪声,应加以控制。In researching the fluid elastic characteristics of the rudder system, it is found that the results ofrudder system flutter characteristics based on the binary linear flutter wing model are consistent comparedwith the literature simulation data. The rudder system flutter influence laws of such linear parameters as fre?quency ratio, gravity center and torsional rigidity are obtained by calculating using the aforementioned mod?el. In addition, combined with the two degrees of freedom binary wing hydrodynamic calculation method forthe arbitrary time domain, the rudder system nonlinear flutter phenomena is calculated, and the influenceof nonlinear flutter caused by the transmission interval is analyzed. The research results provide a funda?mental analysis method for the fluid elastic characteristics of rudder systems. The results can also supportthe anti-flutter design of rudder systems.

关 键 词：舵系统 水弹性 颤振 间隙 非线性 

分 类 号：U664.36[交通运输工程—船舶及航道工程]