Article(id=1281326764525859629, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1281326672238580175, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2026.01.010, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1752249600000, receivedDateStr=2025-07-12, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1783421706562, onlineDateStr=2026-07-07, pubDate=1768406400000, pubDateStr=2026-01-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1783421706562, onlineIssueDateStr=2026-07-07, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1783421706562, creator=13701087609, updateTime=1783421706562, updator=13701087609, issue=Issue{id=1281326672238580175, tenantId=1146029695717560320, journalId=1240685776644648972, year='2026', volume='30', issue='1', pageStart='1', pageEnd='176', issueExtLink='null', onlineDate='null', pubDate='1768406400000', pubDateStr='2026-01-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1783421684559, creator='13701087609', updateTime=1783422118948, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1281328494261026863, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1281326672238580175, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1281328494261026864, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1281326672238580175, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=89, endPage=103, ext={EN=ArticleExt(id=1281326766941778740, articleId=1281326764525859629, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Fatigue crack propagation analysis and remaining life prediction of ship-shaped net cages based on spectral analysis, columnId=1242129251223274417, journalTitle=Journal of Ship Mechanics, columnName=Structural Mechanics, runingTitle=null, highlight=null, articleAbstract=
The fatigue crack propagation analysis process of large ocean structures based on fracture mechanics is complex and computationally inefficient. This paper draws on the basic idea of the traditional S-N curve method for calculating fatigue life, constructs a stress intensity factor transfer function, and proposes a spectrum-based fatigue crack propagation analysis method for ocean structures. By combining the Python programming language with SESAM, ABAQUS, and FRANC3D calculation software, an efficient automatic crack propagation program was developed to achieve fatigue crack propagation analysis and residual life prediction of large and complex marine structures based on spectrum analysis. A multi-scale sub-model technology was used to realize the transformation of the model from the shell to the solid, solving the problem of the fusion of large-scale structures and small-sized cracks. Using the self-developed automatic crack propagation program system, the influence of fatigue hotspot (D1, D2, D3) on crack propagation behavior and fatigue life was analyzed and it was found that the crack size increases exponentially during service. The stress intensity factor transfer function has a similar shape for the same node, but varies significantly between differen nodes. The fatigue lives of D1, D2, and D3 are 11.3 years, 17.3 years, and 33.1 years, respectively. The initial crack size has a significant effect on fatigue life, and the crack length-to-depth ratio has a greater impact on the crack propagation process than on fatigue life.
, authors=An-min LIU
1, Ling-jun XIE
1, Yi-ming SU
1, Zheng-yi ZHANG
2, Hai-peng CAO
1, Wen-tao HE
1, authorsList=An-min LIU, Ling-jun XIE, Yi-ming SU, Zheng-yi ZHANG, Hai-peng CAO, Wen-tao HE, authorCompany=null, correspAuthors=Wen-tao HE, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2026 Journal of Ship Mechanics. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1281326789746209790, articleId=1281326764525859629, tenantId=1146029695717560320, journalId=1240685776644648972, language=CN, title=基于谱分析的船型网箱疲劳裂纹扩展分析及剩余寿命预测, columnId=1241023038926410098, journalTitle=船舶力学, columnName=结构力学, runingTitle=null, highlight=null, articleAbstract=
基于断裂力学的大型海洋结构物的疲劳裂纹扩展分析过程复杂、计算效率低。本文借鉴传统S–N曲线方法计算疲劳寿命的基本思想,构造了应力强度因子传递函数,提出了一种基于谱分析的海洋结构物疲劳裂纹扩展分析方法。结合Python编程语言以及SESAM、ABAQUS和FRANC3D计算软件,开发了高效的裂纹自动扩展程序;实现了基于谱分析的大型复杂海工结构疲劳裂纹扩展分析和剩余寿命预测。本文应用多尺度子模型技术,实现了模型从壳体到实体的转变,从而解决了大尺度结构与小尺寸裂纹融合的难题。采用自开发的疲劳裂纹自动扩展程序系统分析了疲劳热点(D1、D2、D3)结构形式与位置、初始裂纹尺寸、初始裂纹形状对裂纹扩展行为与疲劳寿命的影响−裂纹尺寸在服役时呈指数级增加。同一节点的应力强度因子传递函数形状相似,但不同节点差异较大。D1、D2、D3疲劳寿命分别为11.3年、17.3年与33.1年;其中初始裂纹尺寸对疲劳寿命影响显著,而初始裂纹长深比对裂纹扩展过程影响较大,对疲劳寿命影响较小。
, authors=刘安民
1, 谢凌俊
1, 苏一鸣
1, 张正艺
2, 曹海鹏
1, 何文涛
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Fatigue analysis of FPSO hull structure in service based on fracture mechanics[D]. Shanghai: Shanghai Jiao Tong University, 2017. (in Chinese), articleTitle=null, refAbstract=null), Reference(id=1281326800043225194, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=15, rfOrder=22, authorNames=null, journalName=null, refType=null, unstructuredReference=漆 涛. 超大型浮式结构物的疲劳寿命分析方法研究[D]. 上海: 上海交通大学, 2017., articleTitle=null, refAbstract=null), Reference(id=1281326800122916971, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=15, rfOrder=23, authorNames=null, journalName=null, refType=null, unstructuredReference=Qi T. 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American Bureau of Shipping, 2018., articleTitle=null, refAbstract=null), Reference(id=1281326800387158127, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=19, rfOrder=27, authorNames=null, journalName=null, refType=null, unstructuredReference=刘安民, 谢凌俊, 苏一鸣, 等. 基于断裂力学的船型网箱疲劳损伤评估研究[J]. 装备环境工程, 2023, 20(9): 105‒113., articleTitle=null, refAbstract=null), Reference(id=1281326800458461296, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=19, rfOrder=28, authorNames=null, journalName=null, refType=null, unstructuredReference=Liu A M, Xie L J, Su Y M, et al. Fatigue damage assessment of ship-shaped net cages based on fracture mechanics[J]. 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Interface constraints of 'Shell to Solid', figureFileSmall=qqWZOGUN1YOtr5khYLb0fA==, figureFileBig=r48c06WYdmA4IAnMQkS8yA==, tableContent=null), ArticleFig(id=1281326794523521075, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图4, caption=
“Shell to Solid”界面约束, figureFileSmall=qqWZOGUN1YOtr5khYLb0fA==, figureFileBig=r48c06WYdmA4IAnMQkS8yA==, tableContent=null), ArticleFig(id=1281326794582241332, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.5, caption=
Crack-containing model generation, figureFileSmall=9RuGMl5jpui1epcDcJwEDQ==, figureFileBig=a/LqgCSmkwf+T7EZcQCDOg==, tableContent=null), ArticleFig(id=1281326794670321717, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图5, caption=
含裂纹模型生成, figureFileSmall=9RuGMl5jpui1epcDcJwEDQ==, figureFileBig=a/LqgCSmkwf+T7EZcQCDOg==, tableContent=null), ArticleFig(id=1281326794733236278, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.6, caption=
Fatigue crack automatic extension program based on spectral analysis, figureFileSmall=8/HgVY6E03LZcNn9uSL1mw==, figureFileBig=u5ovfzG6bFME7Ja8ExNdww==, tableContent=null), ArticleFig(id=1281326794791956535, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图6, caption=
基于谱分析的疲劳裂纹自动扩展程序, figureFileSmall=8/HgVY6E03LZcNn9uSL1mw==, figureFileBig=u5ovfzG6bFME7Ja8ExNdww==, tableContent=null), ArticleFig(id=1281326794846482488, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.7, caption=
Two-parameter semi-elliptical cracks, figureFileSmall=4yWonYMac/nfLLmqUnsHGw==, figureFileBig=qlTMDPt8uboxBfsjBI8hlw==, tableContent=null), ArticleFig(id=1281326794917785657, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图7, caption=
双参数半椭圆裂纹, figureFileSmall=4yWonYMac/nfLLmqUnsHGw==, figureFileBig=qlTMDPt8uboxBfsjBI8hlw==, tableContent=null), ArticleFig(id=1281326794976505914, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.8, caption=
Changes in SIF during crack propagation, figureFileSmall=nSu8cCUpth8rQaVuX2uuAg==, figureFileBig=g2YOrtTKd8iXJXiDhA9sDw==, tableContent=null), ArticleFig(id=1281326795031031867, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图8, caption=
裂纹扩展过程中SIF变化(D3), figureFileSmall=nSu8cCUpth8rQaVuX2uuAg==, figureFileBig=g2YOrtTKd8iXJXiDhA9sDw==, tableContent=null), ArticleFig(id=1281326795089752124, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.9, caption=
Variation of crack morphology, figureFileSmall=bl5j5v6ZMhemN/t3xqggBg==, figureFileBig=jbE6ntytg9yQE6xPSr1TCQ==, tableContent=null), ArticleFig(id=1281326795161055293, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图9, caption=
裂纹形貌变化, figureFileSmall=bl5j5v6ZMhemN/t3xqggBg==, figureFileBig=jbE6ntytg9yQE6xPSr1TCQ==, tableContent=null), ArticleFig(id=1281326795215581246, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.10, caption=
Transfer function of SIF, figureFileSmall=uxQxuQUVC0bGByHo482fzQ==, figureFileBig=Jvf5bfk11KGcZzJY/W0OVQ==, tableContent=null), ArticleFig(id=1281326795303661631, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图10, caption=
应力强度因子传递函数, figureFileSmall=uxQxuQUVC0bGByHo482fzQ==, figureFileBig=Jvf5bfk11KGcZzJY/W0OVQ==, tableContent=null), ArticleFig(id=1281326795374964800, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.11, caption=
Life curve with crack propagation, figureFileSmall=dO1O9Mx1Hz+VwwADhsmDig==, figureFileBig=cO3mZEo8Dq3tEdQrAUDB8g==, tableContent=null), ArticleFig(id=1281326795437879361, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图11, caption=
裂纹扩展寿命曲线, figureFileSmall=dO1O9Mx1Hz+VwwADhsmDig==, figureFileBig=cO3mZEo8Dq3tEdQrAUDB8g==, tableContent=null), ArticleFig(id=1281326795500793922, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.12, caption=
Analysis model of typical node, figureFileSmall=0zz5c29SRrSgi/CTC5t0/g==, figureFileBig=ls9ZdCojDGdEoUPPIFLIGw==, tableContent=null), ArticleFig(id=1281326795559514179, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图12, caption=
典型节点具体分析模型, figureFileSmall=0zz5c29SRrSgi/CTC5t0/g==, figureFileBig=ls9ZdCojDGdEoUPPIFLIGw==, tableContent=null), ArticleFig(id=1281326795626623044, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.13, caption=
Transfer function of SIF at different nodes, figureFileSmall=ySleFXsNUMgVWFYHorZ9Mw==, figureFileBig=fNpE1bd4CiiKKxP5Sf0R7Q==, tableContent=null), ArticleFig(id=1281326795706314821, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图13, caption=
不同节点应力强度因子传递函数, figureFileSmall=ySleFXsNUMgVWFYHorZ9Mw==, figureFileBig=fNpE1bd4CiiKKxP5Sf0R7Q==, tableContent=null), ArticleFig(id=1281326795790200902, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.14, caption=
Variation of crack length-to-depth ratio, figureFileSmall=bG2Brb4IS3eMR9V4YqfFWA==, figureFileBig=mdupp0QPgeLEM+jdBJIpPQ==, tableContent=null), ArticleFig(id=1281326795857309767, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图14, caption=
裂纹长深比变化, figureFileSmall=bG2Brb4IS3eMR9V4YqfFWA==, figureFileBig=mdupp0QPgeLEM+jdBJIpPQ==, tableContent=null), ArticleFig(id=1281326795924418632, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.15, caption=
Variation of crack shape at each node, figureFileSmall=Hk1fKvnQkTNJUT73uLuZ5A==, figureFileBig=rd9wVqDxf1wKDboDhkmBoQ==, tableContent=null), ArticleFig(id=1281326797543419977, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图15, caption=
各节点裂纹形状变化, figureFileSmall=Hk1fKvnQkTNJUT73uLuZ5A==, figureFileBig=rd9wVqDxf1wKDboDhkmBoQ==, tableContent=null), ArticleFig(id=1281326797618917450, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.16, caption=
Effect of initial crack size on fatigue life, figureFileSmall=9HbVDWoGzn3b/i4ZrgLnFw==, figureFileBig=ICcgS9yM4J+5PJ4FKmts8Q==, tableContent=null), ArticleFig(id=1281326797702803531, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图16, caption=
初始裂纹尺寸对疲劳寿命的影响, figureFileSmall=9HbVDWoGzn3b/i4ZrgLnFw==, figureFileBig=ICcgS9yM4J+5PJ4FKmts8Q==, tableContent=null), ArticleFig(id=1281326797820244044, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.17, caption=
Effect of initial crack size on crack shape, figureFileSmall=TtywTTTjAVdYq0uZgNVbGw==, figureFileBig=ApUWJKlhyimYqK+PujcrEw==, tableContent=null), ArticleFig(id=1281326797908324429, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图17, caption=
初始裂纹尺寸对裂纹形状的影响, figureFileSmall=TtywTTTjAVdYq0uZgNVbGw==, figureFileBig=ApUWJKlhyimYqK+PujcrEw==, tableContent=null), ArticleFig(id=1281326797979627598, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.18, caption=
Effect of initial crack length-to-depth ratio on fatigue life, figureFileSmall=7WxvAHX01JA0rQMaHDdT5A==, figureFileBig=p4CcRf0uD+47RA0OiavaGA==, tableContent=null), ArticleFig(id=1281326798046736463, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图18, caption=
初始裂纹长深比对疲劳寿命的影响, figureFileSmall=7WxvAHX01JA0rQMaHDdT5A==, figureFileBig=p4CcRf0uD+47RA0OiavaGA==, tableContent=null), ArticleFig(id=1281326798113845328, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.19, caption=
Comparison of stress intensity factors under different crack length-to-depth ratios, figureFileSmall=lNb3D9MUcuu+bfJ2b0YCkg==, figureFileBig=fp/w2ceaG13hqqKURb67Bw==, tableContent=null), ArticleFig(id=1281326798197731409, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图19, caption=
不同裂纹长深比下应力强度因子对比, figureFileSmall=lNb3D9MUcuu+bfJ2b0YCkg==, figureFileBig=fp/w2ceaG13hqqKURb67Bw==, tableContent=null), ArticleFig(id=1281326798264840274, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=EN, label=Fig.20, caption=
Effect of the initial crack length-to-depth ratio on the change of crack shape, figureFileSmall=6bZEOUQf/ncFT1CxIy4Nlg==, figureFileBig=utm9SDbMgzG6Cy/z8BkHUA==, tableContent=null), ArticleFig(id=1281326798352920659, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326764525859629, language=CN, label=图20, caption=
初始裂纹长深比对裂纹形状变化的影响, figureFileSmall=6bZEOUQf/ncFT1CxIy4Nlg==, figureFileBig=utm9SDbMgzG6Cy/z8BkHUA==, tableContent=null)], attaches=null, journal=Journal(id=1240685663704625163, delFlag=0, nameCn=船舶力学, nameEn=Journal of Ship Mechanics, nameHistory1=null, nameHistory2=null, issn=1007-7294, eissn=null, cn=32-1468/U, coden=null, periodic=0, language=CN, oaType=null, ccby=null, superviseOffice=null, ownerOffice=null, pubOffice=null, editorOffice=null, officeType=null, aims=null, clcCode=null, officeProv=null, officeCity=null, officeAddr=null, officeZip=null, officeEmail=null, officePhone=null, editDirector=null, officeDirector=null, officeDirectorPhone=null, officeStaffNum=null, officeEmpNum=null, coverPicUrl=8VABIsgSw5I4HF/4goaIlA==, journalPrice=null, startedYear=null, abbrevIsoEn=Journal of Ship Mechanics, journalRemark=null, publicationField=null, createdTime=1773732113054, updatedTime=1784019383023, createdBy=18614031015, updatedBy=13041195026, firstLetterCn=C, firstLetterEn=C, 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