船体板架固有频率计算模型的简化  

Study on the Simplified Modeling Methods of Ship Grillage for Modal Analysis

作　　者：龚郝 张世联[1] 

机构地区：[1]上海交通大学船舶与海洋工程学院,上海200240

出　　处：《船海工程》2016年第3期47-49,54,共4页Ship & Ocean Engineering

摘　　要：为提高计算效率与精度,采用有限元计算方法对船体板架固有频率的计算模型进行简化,讨论某实船甲板板架计算模型的范围、边界条件的选择,基于板架的模态分析,探讨各简化模型对甲板板架固有频率计算精度的影响。结果表明,采用单舱段局部有限元模型或单舱段模型计算甲板板架的固有频率,计算结果的误差较小。The FE model for modal analysis of the deck grillage is simplified to improve the calculation accuracy and efficiency. Models with different extensions and boundary conditions are established to study the influence of model＇s simplification upon the accuracy of natural frequencies. The results indicate that local cabin FEM model or one cabin FEM model can be used for the modal analysis of the deck grillage effectively.

关 键 词：有限元计算 甲板板架 固有频率 

分 类 号：U663.2[交通运输工程—船舶及航道工程]