邮轮薄板分段吊装线性与非线性分析
Linear and Nonlinear Analysis of the Thin Plate Block for a Cruise Ship's Superstructure during Lifting
葛珅玮 1贾君瑞 2陈洪钊 3宋科委 2赵彤2
作者信息
- 1. 江苏航运职业技术学院,江苏 南通 226010;上海海事大学 商船学院,上海 201306
- 2. 江苏航运职业技术学院,江苏 南通 226010
- 3. 招商局邮轮制造有限公司,江苏 南通 226116
- 折叠
摘要
采用线性、材料非线性、几何非线性及双非线性方法对一典型邮轮薄板分段结构开展应力、位移的对比分析,并基于补强后的结构模型,开展线性有限元方法适用时极限舾装/结构重量比的计算.结果表明,薄板结构吊装需要考虑双非线性的影响,线性计算的得到应力和位移比双非线性大,采用线性计算的应力进行补强时会造成结构偏安全,对成本控制不利.结构的最大位移是由吊耳与分段连接处的局部刚度决定的,连接处局部刚度越弱,结构的几何非线性越明显.在吊耳与分段连接处补强足够的情况下,分段的舾装/结构重量比低于103%时,可以采用线性分析,但应力偏大约10%.
Abstract
The linear,material nonlinear,geometric nonlinear and double nonlinear methods were used to analyze the stress and displacement for a typical block of a cruise ship's thin plate structure.Based on the reinforced structural model,the ultimate outfitting/structure weight ratio was calculated for linear finite element method could be applied.The results showed that the effect of double nonlinearity should be considered in the lifting analysis of thin plate structure;the result of linear calculation is larger than that of double nonlinear calculation,so the result of linear calculation will cause structure more secure for reinforce-ment,which is unfavorable to cost control.The maximum displacement of the structure is determined by the local stiffness of the joint between the lifting eye and the block structure.The weaker the local stiffness at the joint,the more obvious the geometric nonlinearity of the structure.If the reinforcement at the joints of lifting eyes and the block are sufficient,linear analysis can be used when the outfitting/structure weight ratio of the block is less than 103%,but the stress is larger about 10%.
关键词
邮轮/薄板结构/分段吊装/线性有限元/非线性有限元Key words
cruise ship/thin plate structure/block lifting/linear FEA,nonlinear FEA引用本文复制引用
基金项目
南通市科技计划(JC12022094)
江苏省高等学校自然科学研究项目(22KJD580002)
工信部高新船舶技术项目(MC-201918-C10)
出版年
2024
NETL
NSTL
万方数据