中国舰船研究2025，Vol.20Issue(2)：256-265,10.DOI:10.19693/j.issn.1673-3185.03486
基于弹性安定临界状态的船体梁极限强度Smith法研究
Research on Smith's method of hull girder ultimate strength based on elastic shakedown limit state
摘要
Abstract
[Objective]To accurately assess the ultimate strength of a hull girder,this study analyzes the elastic shakedown characteristics of hull stiffeners under cyclic loading.[Methods]Based on the results of nonlinear finite element numerical simulation,the average stress-average strain relationship of the stiffened plate element in Rahman's Beam-Column Method is corrected with full consideration of the elastic shakedown state,type of stiffened plate,and failure mode.A correction method applicable to the average stress-average strain relationship of the stiffened plate in the elastic shakedown limit state is proposed,and a program for Smith's method for the ultimate strength of hull girders based on the elastic shakedown limit state is compiled and compared with the results of nonlinear finite element numerical simulation.[Result]The results show that the proposed method can effectively evaluate the ultimate strength of a hull girder in the elastic shake-down limit state with greater efficiency than the nonlinear finite element method.[Conclusion]The applica-tion of Smith's method for the ultimate strength of hull girders based on the elastic shakedown limit state can contribute to the accurate and efficient evaluation of the ultimate strength of hull girders.关键词
船体梁/极限强度/Smith法/弹性安定/循环载荷Key words
hull girders/ultimate strength/Smith's method/elastic shakedown/cyclic load分类
交通工程引用本文复制引用
陈泽民,崔虎威,丁启印,胡润文..基于弹性安定临界状态的船体梁极限强度Smith法研究[J].中国舰船研究,2025,20(2):256-265,10.基金项目
国家自然科学基金资助项目(52001040) （52001040）
重庆市自然科学基金面上项目资助(cstc2021jcyj-msxmX0944) （cstc2021jcyj-msxmX0944）
重庆市教委科学研究青年项目资助(KJQN202000712) （KJQN202000712）
内河航运技术湖北省重点实验室开放基金资助项目(NHHY2021004) （NHHY2021004）
重庆交通大学研究生科研创新项目资助(2023S0077) （2023S0077）
