Article(id=1246045605961778016, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1246045605047415288, articleNumber=null, orderNo=null, doi=10.19636/j.cnki.cjsm42-1250/o3.2024.026, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1717603200000, receivedDateStr=2024-06-06, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1775010022869, onlineDateStr=2026-04-01, pubDate=1729785600000, pubDateStr=2024-10-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1775010022869, onlineIssueDateStr=2026-04-01, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1775010022869, creator=13701087609, updateTime=1775010022869, updator=13701087609, issue=Issue{id=1246045605047415288, tenantId=1146029695717560320, journalId=1241755870837649424, year='2024', volume='45', issue='5', pageStart='565', pageEnd='708', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1775010022651, creator=13701087609, updateTime=1775010094858, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1246045907972636933, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1246045605047415288, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1246045907972636934, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1246045605047415288, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=595, endPage=609, ext={EN=ArticleExt(id=1246045606238602082, articleId=1246045605961778016, tenantId=1146029695717560320, journalId=1241755870837649424, language=EN, title=A Study on the Characterization of Crack Tip Constraint Effect from Double Cracks, columnId=1244229834482757770, journalTitle=Chinese Journal of Solid Mechanics, columnName=Research Paper, runingTitle=null, highlight=null, articleAbstract=
To gain a deeper understanding of the constraint effect from double crack tips and accurately characterize it, this study focuses on non-collinear parallel double cracks in a homogeneous plate. It examines the stress and strain fields associated with these double cracks, employing the ABAQUS finite element analysis software. Particular attention is paid to their behaviors at various horizontal distances (s) and vertical distances (h). Additionally, by leveraging the unified constraint parameter Ap, the constraints of double crack tips are compared with those of coalesced single crack tips. The findings reveal significant differences in the distributions and magnitudes of stress and strain at double crack tips compared to coalesced single crack counterparts. The conventional method of calculating the constraints from double cracks based on the stress or strain field at a crack tip, as done for single cracks, would lead to inaccurate results. Comparison of Atotal, Ainside, and Aoutside with Asingle shows that considering both inside and outside crack tip strain fields aligns the variation trend of Atotal more closely with Asingle, with a remarkably narrow fluctuation. The constraint magnitude for coalesced single cracks ranges from 0.10 to 0.30 of the total strain field (Atotal). This approach demonstrates a degree of universality, unaffected by whether the double cracks coalesce or not. It can be directly applied to quantify the constraints imposed by double cracks, regardless of their coalescing status. This study offers valuable insights into the constraint effect of double crack tips and presents a novel method for characterizing the constraints associated with double cracks. In summary, this novel approach offers a more comprehensive and accurate understanding of the complex constraints from double cracks, providing scientific support for evaluating structural integrity with double and multiple cracks.
, correspAuthors=Jie Yang, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, 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, authorCompany=null, fund=null, authors=null, authorsList=Lixiang Song, Yuanyuan Cui, Xiaoxiao Wang, Fang Liu, Jie Yang), CN=ArticleExt(id=1246045614618821563, articleId=1246045605961778016, tenantId=1146029695717560320, journalId=1241755870837649424, language=CN, title=双裂纹裂尖拘束效应的表征研究, columnId=1241831201896469478, journalTitle=固体力学学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
为了更清晰地理解双裂纹裂尖的拘束效应,并对双裂纹裂尖拘束进行表征,本文以均质平板中非共线平行双裂纹为研究对象,对双裂纹在不同水平距离s和垂直距离h下的裂尖应力应变场进行了考察. 进一步,基于统一拘束参数Ap,通过和合并后单裂纹裂尖拘束的对比,对双裂纹裂尖拘束进行了表征. 结果表明:双裂纹与合并后单裂纹裂尖的应力应变无论从分布还是大小均呈现较大的不同,若还是按照之前计算单裂纹裂尖拘束的办法仅基于双裂纹某个裂尖的应力或应变场计算双裂纹的拘束,将会得到不准确的结果. 合并后单裂纹的拘束为0.10~0.30A总. 该研究有助于理解双裂纹裂尖的拘束效应,为双裂纹裂尖拘束的表征提供了新的思路.
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True stress-strain curve of the A508 steel at room temperature[15-17], figureFileSmall=zenNejHWj4J2FcXewm6pRw==, figureFileBig=zhARID04n2o3S4f3V0qvtg==, tableContent=null), ArticleFig(id=1246054850232955851, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=CN, label=图1, caption=
A508室温下的真应力-真应变曲线[15-17], figureFileSmall=zenNejHWj4J2FcXewm6pRw==, figureFileBig=zhARID04n2o3S4f3V0qvtg==, tableContent=null), ArticleFig(id=1246054850337813452, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=EN, label=Fig.2, caption=
Schematic diagram of a plate with double cracks (a) and plate with coalesced single crack (b), figureFileSmall=Rr/hLxsTwpxPnw02Zc7sxg==, figureFileBig=bHp1jsfutTUSIw2c+GK+1Q==, tableContent=null), ArticleFig(id=1246054850396533709, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=CN, label=图2, caption=
含双裂纹平板(a)及其合并后含单裂纹平板(b)示意图, figureFileSmall=Rr/hLxsTwpxPnw02Zc7sxg==, figureFileBig=bHp1jsfutTUSIw2c+GK+1Q==, tableContent=null), ArticleFig(id=1246054850463642574, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=EN, label=Fig.3, caption=
Global meshing and local meshing at crack tip for plate with (a) double cracks and (b) coalesced single crack, figureFileSmall=tdXNuIQeluoAGtkoPulsPg==, figureFileBig=eNIlLAKqjoStfe+6JapJrg==, tableContent=null), ArticleFig(id=1246054850530751439, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=CN, label=图3, caption=
含双裂纹平板(a)与含合并后单裂纹平板(b)的整体网格划分和裂尖局部网格划分, figureFileSmall=tdXNuIQeluoAGtkoPulsPg==, figureFileBig=eNIlLAKqjoStfe+6JapJrg==, tableContent=null), ArticleFig(id=1246054850585277392, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=EN, label=Fig.4, caption=
The crack tip stress field (a), strain field (b) of double cracks and crack tip stress field (c), strain field (d) of coalesced single crack during the propagation process of typical specimens, figureFileSmall=qPnSLkao1ievT7zOqOyMyw==, figureFileBig=u29ljxrCjCTQwHcpF5uW4g==, tableContent=null), ArticleFig(id=1246054850732078033, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=CN, label=图4, caption=
典型试样扩展过程中双裂纹裂尖应力场(a)、应变场(b)及合并后单裂纹裂尖应力场(c)、应变场(d), figureFileSmall=qPnSLkao1ievT7zOqOyMyw==, figureFileBig=u29ljxrCjCTQwHcpF5uW4g==, tableContent=null), ArticleFig(id=1246054850799186898, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=EN, label=Fig.5, caption=
The change of crack tip normal stress of double cracks (a) and coalesced single crack (b) with the distance to the crack tip, figureFileSmall=Mow0zXcbymeFger8T5ckRg==, figureFileBig=pHmkzdNorpNaSFs0lbjXhQ==, tableContent=null), ArticleFig(id=1246054850857907155, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=CN, label=图5, caption=
双裂纹(a)及合并后单裂纹(b)裂尖正应力随裂尖距离的变化, figureFileSmall=Mow0zXcbymeFger8T5ckRg==, figureFileBig=pHmkzdNorpNaSFs0lbjXhQ==, tableContent=null), ArticleFig(id=1246054850933404628, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=EN, label=Fig.6, caption=
Comparison of Ainside obtained from the crack tip of a plate with double cracks and Asingle obtained from the crack tip of a plate with coalesced single crack, figureFileSmall=lDL4puJkqVK7nv7glc1XyA==, figureFileBig=Z+3lCoLpFdPuxvu7L3HwzQ==, tableContent=null), ArticleFig(id=1246054851046650837, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=CN, label=图6, caption=
含双裂纹平板裂尖所得A内与含合并后单裂纹平板裂尖所得A单的对比, figureFileSmall=lDL4puJkqVK7nv7glc1XyA==, figureFileBig=Z+3lCoLpFdPuxvu7L3HwzQ==, tableContent=null), ArticleFig(id=1246054851109565398, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=EN, label=Fig.7, caption=
Comparison of Aoutside obtained from the crack tip of a plate with double cracks and Asingle obtained from the crack tip of a plate with coalesced single crack, figureFileSmall=CfGjBpxjufGqk/WFnIEWHQ==, figureFileBig=xYfG7RQ2Ce7IQ5+vAmfUjA==, tableContent=null), ArticleFig(id=1246054851164091351, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=CN, label=图7, caption=
含双裂纹平板裂尖所得A外与含合并后单裂纹平板裂尖所得A单的对比, figureFileSmall=CfGjBpxjufGqk/WFnIEWHQ==, figureFileBig=xYfG7RQ2Ce7IQ5+vAmfUjA==, tableContent=null), ArticleFig(id=1246054851227005912, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=EN, label=Fig.8, caption=
Comparison of Atotal obtained from the crack tip of a plate with double cracks and Asingle obtained from the crack tip of a plate with coalesced single crack, figureFileSmall=DKaUjvLDa0umWJB/lhggbA==, figureFileBig=59OuqiM0r/bfbGHFSa6Blw==, tableContent=null), ArticleFig(id=1246054851289920473, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=CN, label=图8, caption=
含双裂纹平板裂尖所得A总与含合并后单裂纹平板裂尖所得A单的对比, figureFileSmall=DKaUjvLDa0umWJB/lhggbA==, figureFileBig=59OuqiM0r/bfbGHFSa6Blw==, tableContent=null), ArticleFig(id=1246054851369612250, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=EN, label=Fig.9, caption=
Typical damage diagram when double cracks coalesce (a) and non-coalesce (b), figureFileSmall=5cdTu0f6Pr7pAdjRvfbPIw==, figureFileBig=N8iS4YwK7I59LTUdcLeKPQ==, tableContent=null), ArticleFig(id=1246054851449304027, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=CN, label=图9, caption=
双裂纹合并时(a)与不合并时(b)的典型损伤云图, figureFileSmall=5cdTu0f6Pr7pAdjRvfbPIw==, figureFileBig=N8iS4YwK7I59LTUdcLeKPQ==, tableContent=null), ArticleFig(id=1246054851520607196, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=EN, label=Fig.10, caption=
Comparison of (a)Ainside, (b)Aoutside, (c)Atotal obtained from the crack tip of a plate with double cracks and Asingle obtained from the crack tip of a plate with coalesced single crack, figureFileSmall=4urnE/w1FFkaRHrwSYZjIw==, figureFileBig=FlxqNEP7LIATshYkzAmhYQ==, tableContent=null), ArticleFig(id=1246054851629659101, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=CN, label=图10, caption=
含双裂纹平板裂尖所得(a)A内、(b)A外、(c)A总与含合并后单裂纹平板裂尖所得A单的对比, figureFileSmall=4urnE/w1FFkaRHrwSYZjIw==, figureFileBig=FlxqNEP7LIATshYkzAmhYQ==, tableContent=null), ArticleFig(id=1246054851688379358, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=EN, label=Table 1, caption=
Design scheme for plates with double cracks
, figureFileSmall=null, figureFileBig=null, tableContent=
| 编号 | s(mm) | h(mm) | a(mm) |
|---|
| No. 1 | 0.0 | 1.0 | 1.6 |
| 1.5 | 1.6 |
| 2.0 | 1.6 |
| 2.4 | 1.6 |
| No. 2 | 1.0 | 1.0 | 1.6 |
| 1.5 | 1.6 |
| 2.0 | 1.6 |
| 2.5 | 1.6 |
| 3.0 | 1.6 |
| No. 3 | 2.0 | 1.0 | 1.6 |
| 1.5 | 1.6 |
| 2.0 | 1.6 |
| 2.5 | 1.6 |
| 3.0 | 1.6 |
), ArticleFig(id=1246054851755488223, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246045605961778016, language=CN, label=表1, caption=
含双裂纹平板设计方案
, figureFileSmall=null, figureFileBig=null, tableContent=
| 编号 | s(mm) | h(mm) | a(mm) |
|---|
| No. 1 | 0.0 | 1.0 | 1.6 |
| 1.5 | 1.6 |
| 2.0 | 1.6 |
| 2.4 | 1.6 |
| No. 2 | 1.0 | 1.0 | 1.6 |
| 1.5 | 1.6 |
| 2.0 | 1.6 |
| 2.5 | 1.6 |
| 3.0 | 1.6 |
| No. 3 | 2.0 | 1.0 | 1.6 |
| 1.5 | 1.6 |
| 2.0 | 1.6 |
| 2.5 | 1.6 |
| 3.0 | 1.6 |
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