船体板架固有频率的敏感性及实用计算方法  

Sensitivity of Natural Frequencies of Hull Plated Grillage and its Practical Method of Calculation

作　　者：刘启民[1,2] 赵德有[1,2] 王镐章 

机构地区：[1]大连水产学院机械工程系 [2]大连理工大学船舶系

出　　处：《大连水产学院学报》1997年第4期29-36,共8页Journal of Dalian Fisheries University

基　　金："八五"船舶科技预研项目

摘　　要：针对船体板架固有频率计算模型的特点，对影响板架固有频率的参数进行了分级，提出了板架固有频率对参数的有限差商敏感性（ＦＤＳ）概念，编制了进行有限差商敏感度计算、连续进行ＦＤＳ分析的程序（ＳＥＮ）。应用表明，该方法合理、可行、有效。According to the features of calculating the natural frequencies of hull plated grillage with finite element model, this paper classifies the parameters that effect natural frequencies of hull plated grillage and presents the concept of finite difference sensitivity (FDS) of natural frequencies of hull plated grillage against the parameters. A integrated software is developed for FDS analysis and calculation in succession. The results show that method of calculation is reasonable, practical, effective.

关 键 词：船体板架 固有频率 敏感性 

分 类 号：U661.44[交通运输工程—船舶及航道工程]