摘要
采用Ｍｉｎｄｌｉｎ板单元和参考轴杆单元，建立了考虑板剪切变形、骨架剪切变形和骨架偏心影响的船舶板梁组合结构振动分析模型，并研究比较了不同船舶板梁组合结构振动分析有限元模型的计算精度。最后通过对某舱室甲板固有频率计算值和实测值的比较，讨论了船舶局部结构振动分析中边界条件处理问题。
In this paper,a vibration analysis model for stiffened plates of ship's local structures using Mindlin plate element and reference axis beam element is proposed. The model imcorporates the shear deformations of both, the plate and the stiffeners with the eccentric effect of the siffeners. A comparison of computational accuracy of different FEM models for vibration analysis of ship's stiffened plates are given. The proper treatment of the boundary conditions in ship's local vibration analysis based on the comparison between the calculated frequency and measured frequency is also discussed.
出处
《船舶工程》
CSCD
北大核心
2000年第3期11-12,23,共3页
Ship Engineering
关键词
船舶板梁组合结构
振动分析
有限元法
边界条件
Stiffened plates,Vibration analysis, Finite element method,Boundary condition<
