Article(id=1242129250266973091, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1242129246575989412, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2024.01.010, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1689955200000, receivedDateStr=2023-07-22, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774076290909, onlineDateStr=2026-03-21, pubDate=1705680000000, pubDateStr=2024-01-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774076290909, onlineIssueDateStr=2026-03-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774076290909, creator=13701087609, updateTime=1774076290909, updator=13701087609, issue=Issue{id=1242129246575989412, tenantId=1146029695717560320, journalId=1240685776644648972, year='2024', volume='28', issue='1', pageStart='1', pageEnd='168', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1774076290029, creator=13701087609, updateTime=1774080061948, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1242145067209666974, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1242129246575989412, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1242145067213861279, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1242129246575989412, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=103, endPage=114, ext={EN=ArticleExt(id=1242129251361686452, articleId=1242129250266973091, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Crack propagation analysis of Q345 steel with defects based on peridynamics, columnId=1242129251223274417, journalTitle=Journal of Ship Mechanics, columnName=Structural Mechanics, runingTitle=null, highlight=null, articleAbstract=
In ship and ocean engineering, structures inevitably encounter crack damage due to material defects or microcracks generated during their service time, which causes stress concentration and structural failure. To better simulate the crack propagation behavior of steel members with defects, Q345 steel was taken as the research object in this paper, an improved two-parameter peridynamic (PD) model was proposed based on the PD theory. The internal length effect of long-range forces was considered and the corresponding expressions of coefficient were deduced firstly. Furthermore, the basic form of the constitutive force function of the two-parameter PD was constructed based on the linear and nonlinear mechanical behaviors of the failure process of Q345 steel with defects. The crack propagation behaviors of Q345 steel with different crack distance, length and angle were studied and compared with the experimental results, which verified the accuracy of the present work. Then, the calculation method of fatigue crack propagation under alternating load was given. The research results may provide a reference for the optimization design and failure prevention of steel members in ocean engineering.
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船舶与海洋工程结构中由于材料本身缺陷或服役过程中产生的细小裂纹,使结构不可避免地产生裂纹损伤,造成应力集中而破坏。为了研究含裂纹缺陷低合金钢构件的裂纹扩展行为,以应用广泛的Q345钢为研究对象,基于近场动力学(Peridynamics,PD)理论提出一种改进的双参数PD方法。首先考虑PD力的非局部长程力特性,推导对应的键刚度系数;其次,根据含裂纹缺陷Q345钢拉伸破坏的线性和非线性的力学行为,构建双参数PD本构力函数的基本形式。通过研究不同双裂纹间距、长度和角度的Q345钢裂纹扩展行为,与试验结果对比验证本文改进的双参数PD方法的准确性,并且给出交变荷载情形下疲劳裂纹扩展的计算方法。结果可为船舶钢构件的优化设计和断裂预防提供参考。
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1.State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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1.上海交通大学 海洋工程国家重点实验室,上海 200240
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1.State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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吕海宁(1979-),男,副教授,博士生导师,通讯作者,E-mail:haining@sjtu.edu.cn。
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50(4): 705-711., articleTitle=Two-dimensional fatigue crack propagation model based on peridynamics, refAbstract=null)], funds=[Fund(id=1242129271381099127, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, awardId=51979159, language=CN, fundingSource=国家自然科学基金资助项目(51979159), fundOrder=null, country=null), Fund(id=1242129271477568123, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, awardId=19DZ1207300, language=CN, fundingSource=上海市科委“科技创新行动计划项目”(19DZ1207300), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1242129265127391622, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, xref=1., ext=[AuthorCompanyExt(id=1242129265135780231, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, companyId=1242129265127391622, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1.上海交通大学 海洋工程国家重点实验室,上海 200240)]), AuthorCompany(id=1242129265244832141, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, xref=2., ext=[AuthorCompanyExt(id=1242129265253220750, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, companyId=1242129265244832141, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Load-displacement curve and two-parameter PD force function fitting curve of Q345 steel with crack defects, figureFileSmall=6dGVauY6+loa752vqRK9jA==, figureFileBig=jOsjfZL0Uo1qUtTsfRalcA==, tableContent=null), ArticleFig(id=1242129269208449554, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=CN, label=图1, caption=
含裂纹缺陷的Q345钢的荷载-位移曲线和双参数PD力函数拟合曲线, figureFileSmall=6dGVauY6+loa752vqRK9jA==, figureFileBig=jOsjfZL0Uo1qUtTsfRalcA==, tableContent=null), ArticleFig(id=1242129269376221723, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=EN, label=Fig.2, caption=
Contours of two-parameter PD model relative errors, figureFileSmall=TMo+IXNjc2SpBDzjdxLrZw==, figureFileBig=Y60iJLqW9GWRvgHtIrwH0w==, tableContent=null), ArticleFig(id=1242129269460107809, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=CN, label=图2, caption=
双参数PD模型相对误差云图, figureFileSmall=TMo+IXNjc2SpBDzjdxLrZw==, figureFileBig=Y60iJLqW9GWRvgHtIrwH0w==, tableContent=null), ArticleFig(id=1242129269535605286, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=EN, label=Fig.3, caption=
Maximum relative errors of two two-parameter PD models with different Poisson's ratios, figureFileSmall=p0ePmpqTj6Ta/3HI7+1UtA==, figureFileBig=QNxbS2lLOjUi84HMF9618Q==, tableContent=null), ArticleFig(id=1242129269623685671, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=CN, label=图3, caption=
不同泊松比情况下两种双参数PD模型的最大相对误差, figureFileSmall=p0ePmpqTj6Ta/3HI7+1UtA==, figureFileBig=QNxbS2lLOjUi84HMF9618Q==, tableContent=null), ArticleFig(id=1242129269711766060, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=EN, label=Fig.4, caption=
Sketch of the Q345 steel specimen with double-edge notch, figureFileSmall=sBHYFLoXkXr1/RPBsAbofQ==, figureFileBig=7+5FGpIlwKWj5naYeB4acg==, tableContent=null), ArticleFig(id=1242129269799846446, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=CN, label=图4, caption=
预制双边裂纹的Q345钢试件示意图, figureFileSmall=sBHYFLoXkXr1/RPBsAbofQ==, figureFileBig=7+5FGpIlwKWj5naYeB4acg==, tableContent=null), ArticleFig(id=1242129269879538225, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=EN, label=Fig.5, caption=
Crack propagation of specimens with different crack distances, figureFileSmall=DFIphQ0mzk3qSd5Vfm8Shw==, figureFileBig=zLuqo/Xk0wM4KMIHGd1mew==, tableContent=null), ArticleFig(id=1242129269992784437, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=CN, label=图5, caption=
不同裂纹间距的试件裂纹扩展示意图, figureFileSmall=DFIphQ0mzk3qSd5Vfm8Shw==, figureFileBig=zLuqo/Xk0wM4KMIHGd1mew==, tableContent=null), ArticleFig(id=1242129270064087610, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=EN, label=Fig.6, caption=
Comparison of numerical simulation results of Q345 steel with different crack distances by two PD methods, figureFileSmall=VfjTCaNusmWoEzgH7bJIbw==, figureFileBig=rtQ4xDiFhxWH14oW42eZeA==, tableContent=null), ArticleFig(id=1242129270143779387, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=CN, label=图6, caption=
不同裂纹间距Q345钢裂纹生长路径的两种数值模拟结果对比, figureFileSmall=VfjTCaNusmWoEzgH7bJIbw==, figureFileBig=rtQ4xDiFhxWH14oW42eZeA==, tableContent=null), ArticleFig(id=1242129270227665472, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=EN, label=Fig.7, caption=
Experimental results of Q345 steel specimens with different crack distances, figureFileSmall=fBw2ccjlAwj5ONkN86WDkg==, figureFileBig=GTdG6hCQuZ524wkg5rgxVQ==, tableContent=null), ArticleFig(id=1242129270345105987, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=CN, label=图7, caption=
不同裂纹间距Q345钢的裂纹布置形式和拉伸断裂试验结果[7], figureFileSmall=fBw2ccjlAwj5ONkN86WDkg==, figureFileBig=GTdG6hCQuZ524wkg5rgxVQ==, tableContent=null), ArticleFig(id=1242129270433186379, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=EN, label=Fig.8, caption=
Crack propagation of specimens with different crack lengths, figureFileSmall=ZsBgwBLjtud6mwQHFqwy5Q==, figureFileBig=IhEBbQts/WpclcjooP+sqg==, tableContent=null), ArticleFig(id=1242129270512878159, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=CN, label=图8, caption=
不同裂纹长度的试件裂纹扩展示意图, figureFileSmall=ZsBgwBLjtud6mwQHFqwy5Q==, figureFileBig=IhEBbQts/WpclcjooP+sqg==, tableContent=null), ArticleFig(id=1242129270584181328, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=EN, label=Fig.9, caption=
Comparison of numerical and experimental results of Q345 steel with different crack lengths, figureFileSmall=q2xEllueunah5P5Isuaj6A==, figureFileBig=mF3U/zXpbB7JdMaaEuH4rA==, tableContent=null), ArticleFig(id=1242129270655484499, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=CN, label=图9, caption=
不同裂纹长度Q345钢裂纹生长路径的数值模拟和试验结果对比, figureFileSmall=q2xEllueunah5P5Isuaj6A==, figureFileBig=mF3U/zXpbB7JdMaaEuH4rA==, tableContent=null), ArticleFig(id=1242129270730981974, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=EN, label=Fig.10, caption=
Crack propagation of specimens with different crack angles, figureFileSmall=q1qusN21fdzE6s9JdbAOQA==, figureFileBig=bN0lQxij44EZ0sDcdHxAxA==, tableContent=null), ArticleFig(id=1242129270823256666, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=CN, label=图10, caption=
不同裂纹角度的试件裂纹扩展示意图, figureFileSmall=q1qusN21fdzE6s9JdbAOQA==, figureFileBig=bN0lQxij44EZ0sDcdHxAxA==, tableContent=null), ArticleFig(id=1242129270890365534, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=EN, label=Fig.11, caption=
Comparison of numerical and experimental results of Q345 steel with different crack angles, figureFileSmall=iCuBOZ0YgAKc2cE7dIEESQ==, figureFileBig=n/Q8hWbFtCbXTZ9VTX16zw==, tableContent=null), ArticleFig(id=1242129270965863010, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=CN, label=图11, caption=
不同裂纹角度Q345钢裂纹生长路径的数值模拟和试验结果对比, figureFileSmall=iCuBOZ0YgAKc2cE7dIEESQ==, figureFileBig=n/Q8hWbFtCbXTZ9VTX16zw==, tableContent=null), ArticleFig(id=1242129271032971879, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=EN, label=Fig.12, caption=
Comparison of numerical and experimental results of specimen under alternating load, figureFileSmall=fv2Bb19/Dl9GZsgQkfs16w==, figureFileBig=wcdFtyvLwtZOYrWp+iTAcQ==, tableContent=null), ArticleFig(id=1242129271116857963, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=CN, label=图12, caption=
交变荷载下试件裂纹扩展路径的数值模拟和试验及文献结果对比, figureFileSmall=fv2Bb19/Dl9GZsgQkfs16w==, figureFileBig=wcdFtyvLwtZOYrWp+iTAcQ==, tableContent=null), ArticleFig(id=1242129271192355438, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=EN, label=Fig.13, caption=
Relationship between the number of load cycles and the crack lengths, figureFileSmall=kccWjOXtiZ18o/VDdt8pig==, figureFileBig=/0udwZVRyTLB40yzrblc4g==, tableContent=null), ArticleFig(id=1242129271267852913, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242129250266973091, language=CN, label=图13, caption=
荷载循环次数与裂纹长度的关系, figureFileSmall=kccWjOXtiZ18o/VDdt8pig==, figureFileBig=/0udwZVRyTLB40yzrblc4g==, 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=1773732336269, createdBy=18614031015, updatedBy=13701087609, firstLetterCn=J, firstLetterEn=J, 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