摘要
从研究潜艇轻外壳表面速度场的重构方法出发,建立有限长双层加肋圆柱壳模型,用有限元法对其低中频段进行了振动模态分析,找出内外壳体模态参数的变化规律,此外为了研究静水压力对模态参数的影响,还比较了壳体模型在水中和在空气中各阶模态的固有频率,为研究艇体振动特性以及轻外壳速度场重构方法提供了理论依据.
Based on the reconstructing method of the velocity field for the outer shell of a submarine, a model of finite ribbed cylindrical double shell is established in this paper. The vibration modes of the model in low and medium frequency band are analyzed by using finite element method. Certain rules of modal parameters of inner and outer shells are found. In order to analyze the influence of hydrostatic pressure on the modal parameters, the inherent frequencies of submerged and un-submerged cylindrical double shells are compared, providing the theoretical basis for researching vibration characteristics of the submarine shell and the reconstructing method of the velocity field for outer shell of the submarine.
出处
《武汉理工大学学报（交通科学与工程版）》
2006年第2期269-271,共3页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
关键词
圆柱壳体
速度场
模态分析
cylindrical shell
velocity field
modal analysis
