中国舰船研究2025，Vol.20Issue(2)：317-328,12.DOI:10.19693/j.issn.1673-3185.03602
不同设计要求下钛合金双层加筋圆柱壳优化设计特性分析
Analysis of optimization characteristics of titanium alloy double layer stiffened cylindrical shell structure under different design requirements
李世强 1朱时洋 2和卫平 2刘均 1程远胜1
作者信息
- 1. 华中科技大学 船舶与海洋工程学院,湖北 武汉 430074
- 2. 武汉第二船舶设计研究所,湖北 武汉 430205
- 折叠
摘要
Abstract
[Objective]In order to explore the characteristics of optimization design schemes of titanium al-loy double layer stiffened cylindrical shell structures under different length-to-diameter ratios and calculation pressures,a mathematical model for the lightweight optimization of such structures is established.[Method]The main control program of the genetic algorithm is established in MATLAB,and the ultimate bearing capacity is calculated and checked by finite element software ANSYS.The differences of optimiza-tion schemes between titanium alloy single layer stiffened cylindrical shells and titanium alloy double layer stiffened cylindrical shells under different length-to-diameter ratios and different calculation pressures are then compared and analyzed.[Results]There are two critical calculation pressures in the optimization design of titanium alloy stiffened cylindrical shells,and the optimization design is divided into three types:the stability constraint type of ultimate bearing capacity constraint control optimization design,the strength constraint type of strength constraint control optimization design,and the joint constraint type of strength and ultimate bear-ing capacity constraint joint control optimization design.The larger the length-to-diameter ratio,the greater the critical calculation pressure.Under the same calculation pressure and length-to-diameter ratio,the weight of the double layer shell optimization scheme is lighter than that of the single layer shell,and the critical calcula-tion pressure of the double layer shell optimization design is smaller than that of the single layer shell under the same length-to-diameter ratio.[Conclusion]The results of this study can provide useful references for the optimization design of titanium alloy double layer stiffened cylindrical shell structures.关键词
壳体/双层加筋圆柱壳/钛合金/结构优化/结构设计/长径比/计算压力Key words
shells(structures)/double layer stiffened cylindrical shell/titanium alloy/structural optimization/structural design/length-to-diameter ratio/calculation pressure分类
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李世强,朱时洋,和卫平,刘均,程远胜..不同设计要求下钛合金双层加筋圆柱壳优化设计特性分析[J].中国舰船研究,2025,20(2):317-328,12.
