Article(id=1246028560188682428, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1246028557319783390, articleNumber=null, orderNo=null, doi=10.19636/j.cnki.cjsm42-1250/o3.2024.001, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1704124800000, receivedDateStr=2024-01-02, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1775005958839, onlineDateStr=2026-04-01, pubDate=1719244800000, pubDateStr=2024-06-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1775005958839, onlineIssueDateStr=2026-04-01, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1775005958839, creator=13701087609, updateTime=1775005958839, updator=13701087609, issue=Issue{id=1246028557319783390, tenantId=1146029695717560320, journalId=1241755870837649424, year='2024', volume='45', issue='3', pageStart='289', pageEnd='426', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1775005958156, creator=13701087609, updateTime=1775006058227, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1246028977123471371, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1246028557319783390, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1246028977123471372, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1246028557319783390, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=352, endPage=362, ext={EN=ArticleExt(id=1246028560461312190, articleId=1246028560188682428, tenantId=1146029695717560320, journalId=1241755870837649424, language=EN, title=Numerical Analysis on the Local Stress-strain Response of U75V Notched Bar Considering Ratchetting, columnId=1244229834482757770, journalTitle=Chinese Journal of Solid Mechanics, columnName=Research Paper, runingTitle=null, highlight=null, articleAbstract=
The ratchetting-fatigue interaction of engineering materials has been extensively investigated in the recent decades. However, as an essential engineering problem, the fatigue failure of notched components with ratchetting has not yet been well touched. It is known that the local stress/strain field at the notch root is a prerequisite for further fatigue life assessment. Neuber's rule is a widely used semi-analytical method for predicting the local stress/strain at the notch root, but its feasibility is not verified when remarkable ratchetting occurs at the root. Therefore, in this work, the cyclic deformation of a notched bar made of U75V steel under asymmetrically uniaxial stress-controlled cyclic loading is simulated using the finite element method. A cyclic elasto-plastic constitutive model is selected and verified according to the experimental results of U75V steel. A UMAT subroutine is developed and implanted into the finite element software Abaqus. Based on the simulation, the stress/strain distributions and corresponding stress/strain concentration coefficients at the notch root, as well as their evolutions during cyclic deformation, are studied. Then, the applicability of Neuber's rule to analyze the local stress-strain response at the notch root of notched components is discussed, taking ratchetting into consideration. The results show that during cyclic deformation, the local stress at the notch root is relaxed, and the stress concentration coefficient decreases accordingly. Meanwhile, the ratchetting strain becomes concentrated at the notch root, and the strain concentration coefficient increases with the number of cycles. The geometric mean of stress and strain concentration coefficients also gradually increases with the number of cycles, significantly differing from the theoretical stress concentration coefficients. This suggests that Neuber's rule cannot accurately describe the stress-strain response at the notch root of notched components when significant ratchetting behavior occurs. Therefore, modifications should be made to Neuber's rule to expand its application scope.
, correspAuthors=Guozheng Kang, 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=Kaicheng Qu, Huiliang Luo, Qianhua Kan, Guozheng Kang), CN=ArticleExt(id=1246028569093190074, articleId=1246028560188682428, tenantId=1146029695717560320, journalId=1241755870837649424, language=CN, title=考虑棘轮行为的U75V缺口圆棒局部应力-应变分析, columnId=1241831201896469478, journalTitle=固体力学学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
本文通过对U75V钢缺口圆棒在单轴非对称应力控制循环载荷作用下循环变形行为的有限元模拟,分析了缺口局部的应力-应变分布及演化情况,研究了缺口弹塑性应力与应变集中系数随循环周次的变化规律,讨论了Neuber准则对考虑棘轮行为的缺口局部应力-应变分析的适用性. 结果表明:在循环变形过程中,缺口根部的局部应力产生松弛现象,应力集中系数随循环次数的增加而减小;棘轮应变主要集中在缺口位置,应变集中系数随循环次数的增加而增大;应力集中系数与应变集中系数乘积的平方根随循环次数的增加而逐步增大,并且明显不同于理论应力集中系数. 这说明,在缺口根部出现明显的棘轮行为时,使用Neuber准则无法对缺口的局部应力应变行为进行准确描述.
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The experimental curve of σa/σa0-p and the correspondent fitting result, figureFileSmall=GkRSMy0/ZUC+LTwkxz2iNw==, figureFileBig=fpV9fwd5dfs8UUYc7OBfcQ==, tableContent=null), ArticleFig(id=1246028571551052339, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=CN, label=图1, caption=
σa/σa0-p曲线与拟合结果, figureFileSmall=GkRSMy0/ZUC+LTwkxz2iNw==, figureFileBig=fpV9fwd5dfs8UUYc7OBfcQ==, tableContent=null), ArticleFig(id=1246028571743990332, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=EN, label=Fig.2, caption=
Comparison between the experimental and simulated stress-strain curves of U75V steel under monotonic tension, figureFileSmall=ZysowAkIp8WkgfxGLRRyLw==, figureFileBig=CWwv182YirYIOfgvJ20z6w==, tableContent=null), ArticleFig(id=1246028571836265026, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=CN, label=图2, caption=
U75V钢单轴拉伸实验与模拟应力-应变曲线对比, figureFileSmall=ZysowAkIp8WkgfxGLRRyLw==, figureFileBig=CWwv182YirYIOfgvJ20z6w==, tableContent=null), ArticleFig(id=1246028571945316935, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=EN, label=Fig.3, caption=
Comparison between the experimental and simulated stress-strain hysteresis curves of U75V steel in the strain-controlled cyclic loading condition (strain amplitude 0.4%), figureFileSmall=yGvdetaD8a2Vu0b83LmgIQ==, figureFileBig=IxlwSaBMRlfkmOzVnPV+3w==, tableContent=null), ArticleFig(id=1246028572058563147, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=CN, label=图3, caption=
应变控制循环载荷下U75V钢应力-应变滞回环曲线实验与模拟结果对比(幅值为0.4%), figureFileSmall=yGvdetaD8a2Vu0b83LmgIQ==, figureFileBig=IxlwSaBMRlfkmOzVnPV+3w==, tableContent=null), ArticleFig(id=1246028572196975184, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=EN, label=Fig.4, caption=
Comparison between experimental and simulated stress-strain hysteresis curves of U75V steel in the stress-controlled cyclic loading condition with 150±500 MPa, figureFileSmall=m4IYEyfFC+l1wxypUfM1hw==, figureFileBig=dFHB1MSzbaVoWdfbyNDo+A==, tableContent=null), ArticleFig(id=1246028572314415702, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=CN, label=图4, caption=
150±500 MPa应力控制循环载荷下U75V钢应力-应变滞回环曲线实验与模拟结果对比, figureFileSmall=m4IYEyfFC+l1wxypUfM1hw==, figureFileBig=dFHB1MSzbaVoWdfbyNDo+A==, tableContent=null), ArticleFig(id=1246028572473799259, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=EN, label=Fig.5, caption=
Comparison between experimental and simulated stress-strain hysteresis curves of U75V steel in the stress-controlled cyclic loading condition with 150±600 MPa, figureFileSmall=XY8MrryJ4TDhsKRBfZtShA==, figureFileBig=jqBcDOVR1/94zYRgBt6eNA==, tableContent=null), ArticleFig(id=1246028572557685344, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=CN, label=图5, caption=
150±600 MPa应力控制循环载荷下U75V钢应力-应变滞回环曲线实验与模拟结果对比, figureFileSmall=XY8MrryJ4TDhsKRBfZtShA==, figureFileBig=jqBcDOVR1/94zYRgBt6eNA==, tableContent=null), ArticleFig(id=1246028572687708773, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=EN, label=Fig.6, caption=
Schematic diagram of finite element model and mesh of notched bar, figureFileSmall=B7tug8xxWMGyarIhe2pm/A==, figureFileBig=OwBP3zz4RVWWpivXusF6AQ==, tableContent=null), ArticleFig(id=1246028572800954985, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=CN, label=图6, caption=
缺口圆棒有限元模型和网格划分示意图, figureFileSmall=B7tug8xxWMGyarIhe2pm/A==, figureFileBig=OwBP3zz4RVWWpivXusF6AQ==, tableContent=null), ArticleFig(id=1246028572905812591, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=EN, label=Fig.7, caption=
Axial stress distributions around the notch root at the peak stress point of the cyclic stressing and after the specified loading cycles (100±400 MPa), figureFileSmall=3wnWLa3xzASj3JNY5PkXqg==, figureFileBig=0MJHncMqwtsuaZI+2Od+mA==, tableContent=null), ArticleFig(id=1246028572989698675, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=CN, label=图7, caption=
指定循环周次下缺口根部区域在应力峰值处的轴向应力分布云图(100±400 MPa), figureFileSmall=3wnWLa3xzASj3JNY5PkXqg==, figureFileBig=0MJHncMqwtsuaZI+2Od+mA==, tableContent=null), ArticleFig(id=1246028573069390456, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=EN, label=Fig.8, caption=
Distribution of the axial stress along the reference line at the peak stress point of the cyclic stressing and after the specified loading cycles, figureFileSmall=XO5suadUirUpXibqhO0poA==, figureFileBig=vITvIc64oTj0ppQD0Yfqag==, tableContent=null), ArticleFig(id=1246028573174248058, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=CN, label=图8, caption=
指定循环周次下缺口根部在应力加载峰值时的轴向应力梯度分布, figureFileSmall=XO5suadUirUpXibqhO0poA==, figureFileBig=vITvIc64oTj0ppQD0Yfqag==, tableContent=null), ArticleFig(id=1246028573329437312, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=EN, label=Fig.9, caption=
The local axial stress-strain curve at the notch root in the symmetrically and asymmetrically stress-controlled cyclic loading conditions, figureFileSmall=dgYOd2uo5rAwWYa4StMZqw==, figureFileBig=h4C+8V2xX1F/sAJpz2cTAg==, tableContent=null), ArticleFig(id=1246028573409129091, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=CN, label=图9, caption=
对称和非对称应力循环载荷下缺口局部轴向应力-应变曲线, figureFileSmall=dgYOd2uo5rAwWYa4StMZqw==, figureFileBig=h4C+8V2xX1F/sAJpz2cTAg==, tableContent=null), ArticleFig(id=1246028573518180999, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=EN, label=Fig.10, caption=
The effects of stress level on the evolution of axial peak stress at the notch root, figureFileSmall=ykFfMsu3B1kDEtXD9lVhpw==, figureFileBig=KllTiNEhjfNfEGex8URZow==, tableContent=null), ArticleFig(id=1246028573602067084, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=CN, label=图10, caption=
应力水平对缺口根部轴向峰值应力随循环周次演化的影响, figureFileSmall=ykFfMsu3B1kDEtXD9lVhpw==, figureFileBig=KllTiNEhjfNfEGex8URZow==, tableContent=null), ArticleFig(id=1246028573694341774, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=EN, label=Fig.11, caption=
The effects of stress level on the evolutions of the local axial ratchetting strain at the notch root and the nominal one, figureFileSmall=OTvp26mzwrSe/1JX+2EW+w==, figureFileBig=ojm+vsxBnaJ+bZkDS6uKsQ==, tableContent=null), ArticleFig(id=1246028573774033554, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=CN, label=图11, caption=
应力水平对缺口圆棒局部和名义轴向棘轮应变随循环周次演化的影响, figureFileSmall=OTvp26mzwrSe/1JX+2EW+w==, figureFileBig=ojm+vsxBnaJ+bZkDS6uKsQ==, tableContent=null), ArticleFig(id=1246028573904056982, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=EN, label=Fig.12, caption=
The effects of the stress level on the evolution of stress concentration coefficient in the notched bar with the asymmetrically stress-controlled cyclic loading condition, figureFileSmall=N406I7YeG/26XxCBYEn7nA==, figureFileBig=mPksP6KHxUMcxVrXKhlwwQ==, tableContent=null), ArticleFig(id=1246028574013108890, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=CN, label=图12, caption=
缺口圆棒在非对称应力循环加载下应力集中系数随循环周次演化曲线, figureFileSmall=N406I7YeG/26XxCBYEn7nA==, figureFileBig=mPksP6KHxUMcxVrXKhlwwQ==, tableContent=null), ArticleFig(id=1246028574084412061, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=EN, label=Fig.13, caption=
The effects of the stress level on the evolution of strain concentration coefficient in the notched bar with the asymmetrically stress-controlled cyclic loading condition, figureFileSmall=Pt7GB/wm5pZmkVVTLrXVZg==, figureFileBig=wzgkpw4mZ/jKu0WKn7JAsg==, tableContent=null), ArticleFig(id=1246028574201852577, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=CN, label=图13, caption=
缺口圆棒在非对称应力循环加载下应变集中系数随循环周次演化曲线力, figureFileSmall=Pt7GB/wm5pZmkVVTLrXVZg==, figureFileBig=wzgkpw4mZ/jKu0WKn7JAsg==, tableContent=null), ArticleFig(id=1246028574319293095, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=EN, label=Fig.14, caption=
Evolution curves of (KσKε)1/2 in the notched bar with the asymmetrically stress-controlled cyclic loading condition and different stress levels, figureFileSmall=/VNkAOjBhEB6ijAHKd7bNQ==, figureFileBig=1heSG3/BgEtvMD5ZOXagIA==, tableContent=null), ArticleFig(id=1246028574407373481, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=CN, label=图14, caption=
非对称应力循环加载下不同应力水平时缺口圆棒的(KσKε)1/2随循环次数演化曲线, figureFileSmall=/VNkAOjBhEB6ijAHKd7bNQ==, figureFileBig=1heSG3/BgEtvMD5ZOXagIA==, tableContent=null), ArticleFig(id=1246028574470288045, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=EN, label=Table 1, caption=
Constitutive model parameters of U75V steel
, figureFileSmall=null, figureFileBig=null, tableContent=
| E=207.1 GPa,ν=0.3,γ=15,Y0=338 MPa,Qsa=296 MPa,μ=0.1 |
:0.026,0.108,0.199,0.397,0.596,1.502,3,5.988,8,11.494(%); |
| σ10-σ10:406,502.9,549.6,615.1,665,834.2,1007.6,1142,1172.7,1186.6(MPa); |
| r(1)-r(10):55.8,72.1,36.0,31.3,38.6,106.9,211.6,178.9,89.7,45.7(MPa) |
| ξ(1)-ξ(10):3870.9,930.2,502.6,251.7,167.9,66.6,33.3,16.7,12.5,8.7; |
), ArticleFig(id=1246028574638060210, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1246028560188682428, language=CN, label=表1, caption=
U75V钢的本构模型参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| E=207.1 GPa,ν=0.3,γ=15,Y0=338 MPa,Qsa=296 MPa,μ=0.1 |
:0.026,0.108,0.199,0.397,0.596,1.502,3,5.988,8,11.494(%); |
| σ10-σ10:406,502.9,549.6,615.1,665,834.2,1007.6,1142,1172.7,1186.6(MPa); |
| r(1)-r(10):55.8,72.1,36.0,31.3,38.6,106.9,211.6,178.9,89.7,45.7(MPa) |
| ξ(1)-ξ(10):3870.9,930.2,502.6,251.7,167.9,66.6,33.3,16.7,12.5,8.7; |
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