Article(id=1243301633476637139, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243301630683234768, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2025.01.010, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1721923200000, receivedDateStr=2024-07-26, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774355808848, onlineDateStr=2026-03-24, pubDate=1737302400000, pubDateStr=2025-01-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774355808848, onlineIssueDateStr=2026-03-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774355808848, creator=13701087609, updateTime=1774355808848, updator=13701087609, issue=Issue{id=1243301630683234768, tenantId=1146029695717560320, journalId=1240685776644648972, year='2025', volume='29', issue='1', pageStart='1', pageEnd='169', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1774355808181, creator=13701087609, updateTime=1774355986739, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1243302379672678863, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243301630683234768, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1243302379672678864, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243301630683234768, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=98, endPage=109, ext={EN=ArticleExt(id=1243301635829641711, articleId=1243301633476637139, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Experimental and simulation study on low cycle fatigue crack growth and crack tip plastic zone evolution of a marine high-strength steel, columnId=1242129251223274417, journalTitle=Journal of Ship Mechanics, columnName=Structural Mechanics, runingTitle=null, highlight=null, articleAbstract=
The fracture failure of ship structures often results from the combination of low cycle fatigue and cumulative plasticity. In order to study the low cycle fatigue crack growth and plastic zone size of a marine high-strength steel considering cumulative plasticity, the low cycle fatigue crack growth test of a marine high-strength steel CT specimen under tension-tension-cyclic load was conducted according to ASTM E647 standard, and the plastic zone size of crack tip under different crack lengths was measured by DIC method. By introducing Chaboche model, an extended finite element simulation method was established to obtain the plastic zone size at the crack tip for exploring the influence of different load factors on the plastic zone size. Then the effectiveness of the method was verified based on test data. Finally, based on the results of finite element calculation and Irwin model, a prediction model of plastic zone size at crack tip considering cumulative plastic strain was proposed, and a crack growth rate model based on plastic zone size was established.
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船体结构的断裂破坏往往是低周疲劳与累积塑性两种破坏模式共同作用的结果。为研究某船用高强钢考虑累积塑性作用的低周疲劳裂纹扩展行为及塑性区尺寸,本文根据ASTM E647标准进行某船用高强钢CT试件在拉-拉循环载荷作用下低周疲劳裂纹扩展试验,并采用DIC方法测量不同裂纹长度下的裂尖塑性区尺寸。随后,通过引入Chaboche模型,建立扩展有限元仿真方法,得到裂尖塑性区尺寸,探究不同载荷因素对塑性区尺寸的影响,并基于试验数据进行方法有效性验证。最后,基于有限元计算结果和Irwin模型,提出一种考虑累积塑性应变的裂尖塑性区尺寸预估模型,并建立基于循环塑性区尺寸的裂纹扩展速率模型。
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乐京霞(1977-),女,博士,教授,通讯作者,E-mail:j.yue@whut.edu.cn
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徐志亭(1985-),男,高级工程师。
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徐志亭(1985-),男,高级工程师。
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Geometric dimensions of CT specimen, figureFileSmall=rHmjyj8c2thz0pVVFVKLeQ==, figureFileBig=vWaIa1/pUyU73rYwFNwZdQ==, tableContent=null), ArticleFig(id=1243301651092714466, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图1, caption=
CT试件几何尺寸示意图, figureFileSmall=rHmjyj8c2thz0pVVFVKLeQ==, figureFileBig=vWaIa1/pUyU73rYwFNwZdQ==, tableContent=null), ArticleFig(id=1243301652741075947, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Fig.2, caption=
Schematic diagram of CT specimen grid, figureFileSmall=XyrAzcxcD3tiGwx+pVx7AQ==, figureFileBig=6++YEQzig6XKnDHhfQoLVw==, tableContent=null), ArticleFig(id=1243301652841739247, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图2, caption=
CT试件网格示意图, figureFileSmall=XyrAzcxcD3tiGwx+pVx7AQ==, figureFileBig=6++YEQzig6XKnDHhfQoLVw==, tableContent=null), ArticleFig(id=1243301652942402546, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Fig.3, caption=
Grid convergence curve, figureFileSmall=BB56qV5H/DzWWz98eRE6Dw==, figureFileBig=CrMiScM27S0VhVUr/QyGkQ==, tableContent=null), ArticleFig(id=1243301653055648757, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图3, caption=
网格收敛性分析, figureFileSmall=BB56qV5H/DzWWz98eRE6Dw==, figureFileBig=CrMiScM27S0VhVUr/QyGkQ==, tableContent=null), ArticleFig(id=1243301653156312056, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Fig.4, caption=
Boundary conditions and loads, figureFileSmall=fD52fRokaItJwJutZw+Brw==, figureFileBig=H+Rwnv1mFsBZKhSmriBVng==, tableContent=null), ArticleFig(id=1243301653244392444, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图4, caption=
边界条件及载荷, figureFileSmall=fD52fRokaItJwJutZw+Brw==, figureFileBig=H+Rwnv1mFsBZKhSmriBVng==, tableContent=null), ArticleFig(id=1243301653315695615, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Fig.5, caption=
Plastic zone for Pmax=42 kN, R=0.3 under different crack lengths, figureFileSmall=8TN+YnnZgGhyTWE9Z7ScBg==, figureFileBig=OIVbQ0tL+t04nBadAhwsZA==, tableContent=null), ArticleFig(id=1243301653416357891, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图5, caption=
不同裂纹长度下的塑性区(Pmax=42 kN,R=0.3), figureFileSmall=8TN+YnnZgGhyTWE9Z7ScBg==, figureFileBig=OIVbQ0tL+t04nBadAhwsZA==, tableContent=null), ArticleFig(id=1243301653500243975, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Fig.6, caption=
Comparison between finite element results and theoretical values of plastic zone sizes at Pmax=44 kN and R=0.1, figureFileSmall=u9raJjL4iCznxC6z1G5qIQ==, figureFileBig=w2a7M8ZED7A/3RVqYb/QxQ==, tableContent=null), ArticleFig(id=1243301653596712973, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图6, caption=
塑性区尺寸有限元结果与理论值对比(Pmax=44 kN,R=0.1), figureFileSmall=u9raJjL4iCznxC6z1G5qIQ==, figureFileBig=w2a7M8ZED7A/3RVqYb/QxQ==, tableContent=null), ArticleFig(id=1243301653668016144, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Fig.7, caption=
Monotonic plastic zone sizes under different load conditions, figureFileSmall=NxW6XNx0RmDH87uXEAdl8g==, figureFileBig=fDkx8FFk7tOaR4lTjMxi0g==, tableContent=null), ArticleFig(id=1243301653739319316, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图7, caption=
不同载荷下的单调塑性区尺寸, figureFileSmall=NxW6XNx0RmDH87uXEAdl8g==, figureFileBig=fDkx8FFk7tOaR4lTjMxi0g==, tableContent=null), ArticleFig(id=1243301653814816792, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Fig.8, caption=
Speckle pattern on CT specimen surface, figureFileSmall=dExo3otGMbIIhTuKkUTHgA==, figureFileBig=q1tRPx3sfReXodz/wch+ow==, tableContent=null), ArticleFig(id=1243301653898702877, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图8, caption=
CT试件表面散斑图案, figureFileSmall=dExo3otGMbIIhTuKkUTHgA==, figureFileBig=q1tRPx3sfReXodz/wch+ow==, tableContent=null), ArticleFig(id=1243301653990977566, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Fig.9, caption=
Test setup for DIC method, figureFileSmall=fmrjB/BAdYz8A1Zb3jsV9g==, figureFileBig=OMHoa2nZmOvoHiPdnyZ0GA==, tableContent=null), ArticleFig(id=1243301654066475043, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图9, caption=
试验工装配置图, figureFileSmall=fmrjB/BAdYz8A1Zb3jsV9g==, figureFileBig=OMHoa2nZmOvoHiPdnyZ0GA==, tableContent=null), ArticleFig(id=1243301654171332647, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Fig.10, caption=
Plastic zone of crack tip at different cycles, figureFileSmall=wKiYcq84nwC9lqW3IBjGEQ==, figureFileBig=s/79gkL3v3H4XyRLSnB7Ww==, tableContent=null), ArticleFig(id=1243301654326521902, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图10, caption=
不同循环次数下裂尖的塑性区, figureFileSmall=wKiYcq84nwC9lqW3IBjGEQ==, figureFileBig=s/79gkL3v3H4XyRLSnB7Ww==, tableContent=null), ArticleFig(id=1243301654418796594, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Fig.11, caption=
Comparison between test results and finite element results under different stress ratios, figureFileSmall=YXBpJ/FrBABe5YeIibNPhw==, figureFileBig=1Lq372PM+7J9yp89cKzl/w==, tableContent=null), ArticleFig(id=1243301654519459893, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图11, caption=
不同应力比下试验结果与有限元结果对比, figureFileSmall=YXBpJ/FrBABe5YeIibNPhw==, figureFileBig=1Lq372PM+7J9yp89cKzl/w==, tableContent=null), ArticleFig(id=1243301654607540281, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Fig.12, caption=
Comparison between test results and finite element results under different load peaks, figureFileSmall=KiM0Lq9qQuRPL3qob3JtyA==, figureFileBig=P3u6Xn+kYtPjoVjGGsvYCw==, tableContent=null), ArticleFig(id=1243301654704009279, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图12, caption=
不同载荷峰值下试验结果与有限元结果对比, figureFileSmall=KiM0Lq9qQuRPL3qob3JtyA==, figureFileBig=P3u6Xn+kYtPjoVjGGsvYCw==, tableContent=null), ArticleFig(id=1243301654783701058, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Fig.13, caption=
Fitting results of f(a/w), figureFileSmall=1lbC8c/iSrLxv60Pt6ZQ5g==, figureFileBig=9Wk4eaA6t+aq5LPwD93CGA==, tableContent=null), ArticleFig(id=1243301654871781447, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图13, caption=
f(a/w)拟合曲线, figureFileSmall=1lbC8c/iSrLxv60Pt6ZQ5g==, figureFileBig=9Wk4eaA6t+aq5LPwD93CGA==, tableContent=null), ArticleFig(id=1243301654989221965, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Fig.14, caption=
Validation of prediction model (The red area in the figure is 7% error band), figureFileSmall=N4lex1gKNPxIQvsymd6hog==, figureFileBig=poFCaCdXt7GuyFnMzTv19g==, tableContent=null), ArticleFig(id=1243301655085690961, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图14, caption=
预估模型有效性验证(图中红色区域为7%的误差带), figureFileSmall=N4lex1gKNPxIQvsymd6hog==, figureFileBig=poFCaCdXt7GuyFnMzTv19g==, tableContent=null), ArticleFig(id=1243301655165382742, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Fig.15, caption=
Crack propagation data under different stress ratios, figureFileSmall=HZ1RE6Qmv/GXtnn4laI7gA==, figureFileBig=qxh4x30BDPrkajRFUyjLnQ==, tableContent=null), ArticleFig(id=1243301655274434649, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图15, caption=
不同应力比下的裂纹扩展数据, figureFileSmall=HZ1RE6Qmv/GXtnn4laI7gA==, figureFileBig=qxh4x30BDPrkajRFUyjLnQ==, tableContent=null), ArticleFig(id=1243301655370903644, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Fig.16, caption=
Crack propagation rate model based on cyclic plastic zone size, figureFileSmall=hTt67OJA+WYpXH14b6ePug==, figureFileBig=X7JAV8ASQXSIWn7P9CCtqg==, tableContent=null), ArticleFig(id=1243301655467372641, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=图16, caption=
基于循环塑性区尺寸的裂纹扩展速率模型, figureFileSmall=hTt67OJA+WYpXH14b6ePug==, figureFileBig=X7JAV8ASQXSIWn7P9CCtqg==, tableContent=null), ArticleFig(id=1243301655584813157, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=EN, label=Tab.1, caption=
Mechanical properties and Chaboche cyclic hardening model parameters of the marine high strength steel concerned
, figureFileSmall=null, figureFileBig=null, tableContent=
| E/GPa | ν | σys/MPa | σ0/MPa | C1 | γ1 | C2 | γ2 |
|---|
| 219 | 0.35 | 635 | 565 | 66500 | 1485 | 950 | 14.25 |
), ArticleFig(id=1243301655689670760, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243301633476637139, language=CN, label=表1, caption=
某船用高强钢力学性能及Chaboche循环硬化模型参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| E/GPa | ν | σys/MPa | σ0/MPa | C1 | γ1 | C2 | γ2 |
|---|
| 219 | 0.35 | 635 | 565 | 66500 | 1485 | 950 | 14.25 |
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