Article(id=1217471528451621018, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1217471527579205782, articleNumber=null, orderNo=null, doi=10.19710/J.cnki.1003-8817.20230258, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1768197431910, onlineDateStr=2026-01-12, pubDate=1697731200000, pubDateStr=2023-10-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1768197431910, onlineIssueDateStr=2026-01-12, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1768197431910, creator=13701087609, updateTime=1768197431910, updator=13701087609, issue=Issue{id=1217471527579205782, tenantId=1146029695717560320, journalId=1189873562199433220, year='2023', volume='', issue='10', pageStart='1', pageEnd='72', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1768197431702, creator=13701087609, updateTime=1768198199307, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1217474747227623941, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1217471527579205782, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1217474747231818246, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1217471527579205782, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=12, endPage=17, ext={EN=ArticleExt(id=1217471528652947611, articleId=1217471528451621018, tenantId=1146029695717560320, journalId=1189873562199433220, language=EN, title=Suspension Local Flexion Injury Estimation and Fatigue Target Correction, columnId=null, journalTitle=Automobile Technology & Material, columnName=null, runingTitle=null, highlight=null, articleAbstract=
For the suspected local flexion injury found during vehicle development, the local flexion was confirmed through comparison of critical flexion stress calculations and measurement of normal deformation, identifying the potential risk of local flexion on durability performance. Through stress measurement, the S-N curve at the notch was modified using the Haywood model. Based on the fatigue damage accumulation model that considers loading sequence and interaction, and the dynamic residual S-N curve, the residual lifespan of the component was calculated, and compared with the experimentally measured residual lifespan to verify the feasibility of the method. Based on the above residual lifespan estimation method, a durability target modification method was proposed, pointing out the shortcomings of this method and engineering solutions.
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针对车型开发中发现的疑似局部屈曲现象,通过临界屈曲应力的计算对比和法向变形量测量确认了局部屈曲,识别出局部屈曲对耐久性能的潜在风险。通过应力测量,结合海伍德模型修正了缺口处S-N曲线,基于考虑了载荷顺序以及交互作用的疲劳损伤累积模型和动态剩余S-N曲线,分别算得零件的残余寿命,对比试验实测残余寿命,验证了该方法的可行性。基于上述残余寿命预估方法,提出了耐久目标修正方法,指出了该方法的不足之处和工程应对方法。
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黄东海(1983—),男,工程师,硕士学位,研究方向为车体底盘强度、疲劳耐久、紧固件可靠性。
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黄东海(1983—),男,工程师,硕士学位,研究方向为车体底盘强度、疲劳耐久、紧固件可靠性。
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黄东海(1983—),男,工程师,硕士学位,研究方向为车体底盘强度、疲劳耐久、紧固件可靠性。
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2017., articleTitle=null, refAbstract=null), Reference(id=1217499051419943086, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217471528451621018, doi=null, pmid=null, pmcid=null, year=2011, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[9], rfOrder=8, authorNames=YUNG-Li LEE, JWO PAN, R B HATHAWAY, journalName=张然治, 译, refType=null, unstructuredReference=
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R B HATHAWAY, 等. 疲劳试验测试分析理论与实践[M].
张然治, 译. 北京: 国防工业出版社,
2011., articleTitle=疲劳试验测试分析理论与实践, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1217499044537091018, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217471528451621018, xref=null, ext=[AuthorCompanyExt(id=1217499044541285322, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217471528451621018, companyId=1217499044537091018, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Dongfeng Motor Co., Ltd. Dongfeng Nissan Passenger Vehicle Company, Technical Center, Guangzhou 510800), AuthorCompanyExt(id=1217499044549673931, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217471528451621018, companyId=1217499044537091018, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=东风汽车有限公司东风日产乘用车公司技术中心, 广州 510800)])], figs=[ArticleFig(id=1217499046793625653, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217471528451621018, language=EN, label=null, caption=null, figureFileSmall=6ld94N0NzircdKQSCR/dBw==, figureFileBig=IiWeRZix/7+a+Lj19wdgIA==, tableContent=null), ArticleFig(id=1217499046885900345, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217471528451621018, language=CN, label=图1, caption=
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切口效应模型, figureFileSmall=CbOQPLEzG31XIkPjDOJiDQ==, figureFileBig=xogFKGxXaqTyAtouP0NSAw==, tableContent=null), ArticleFig(id=1217499049473785967, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217471528451621018, language=EN, label=null, caption=null, figureFileSmall=+gjsL1VCstuhUXVzueyzyQ==, figureFileBig=Q1p/BAETur3cCoSGmRAOSg==, tableContent=null), ArticleFig(id=1217499049532506226, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217471528451621018, language=CN, label=图10, caption=
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预估偏差, figureFileSmall=pW5AXNvFNn1n815om6DUNA==, figureFileBig=HtE+uu89CusB2/Sdlvl79w==, tableContent=null), ArticleFig(id=1217499049842884737, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217471528451621018, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 元素 | C | Si | Mn | P | S |
| 质量分数 | 0.093 | 0.07 | 1.49 | 0.011 | 0.001 6 |
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类SPFH590成分表(质量分数) %
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| 元素 | C | Si | Mn | P | S |
| 质量分数 | 0.093 | 0.07 | 1.49 | 0.011 | 0.001 6 |
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载荷 /kN | 应变来源 | 应变 /με | 应力 /MPa | 平均应力 /MPa |
| 0~15 | 根据 估算 | | 0~520.1 | 260.1 |
| 0~15 | | 2 717 | 0~570.5 | 285.3 |
| ±4.07 | | 1 203 | ±251.1 | 0 |
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载荷-应力列表
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载荷 /kN | 应变来源 | 应变 /με | 应力 /MPa | 平均应力 /MPa |
| 0~15 | 根据 估算 | | 0~520.1 | 260.1 |
| 0~15 | | 2 717 | 0~570.5 | 285.3 |
| ±4.07 | | 1 203 | ±251.1 | 0 |
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| 符号 | 载荷 /kN | 应变来源 | 等效应力幅 /MPa | 平均应力 /MPa |
| | 0~15 | 根据 估算 | ±446.3 | 0 |
| | 0~15 | | ±526.2 | 0 |
| | ±4.07 | | ±251.1 | 0 |
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载荷-等效应力列表
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| 符号 | 载荷 /kN | 应变来源 | 等效应力幅 /MPa | 平均应力 /MPa |
| | 0~15 | 根据 估算 | ±446.3 | 0 |
| | 0~15 | | ±526.2 | 0 |
| | ±4.07 | | ±251.1 | 0 |
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| 来源 | /MPa | /次 | /次 | /MPa | /次 |
| 采用 | 446.3 | 1 366 | 12 | 251.1 | 113 900 |
| 采用 | 526.2 | 385 | 12 | 251.1 | 113 900 |
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应力-寿命列表
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| 来源 | /MPa | /次 | /次 | /MPa | /次 |
| 采用 | 446.3 | 1 366 | 12 | 251.1 | 113 900 |
| 采用 | 526.2 | 385 | 12 | 251.1 | 113 900 |
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| 模型公式 | 来源 | 估算 /次 | 实测 /次 | 偏差/% |
| 式(2) | 采用 | 88 304 | 66 886 | 32.05 |
| 式(2) | 采用 | 45 500 | 66 886 | -31.97 |
| 式(3) | 采用 | 106 817 | 66 886 | 59.70 |
| 式(3) | 采用 | 85 850 | 66 886 | 28.35 |
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剩余寿命n2验证
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| 模型公式 | 来源 | 估算 /次 | 实测 /次 | 偏差/% |
| 式(2) | 采用 | 88 304 | 66 886 | 32.05 |
| 式(2) | 采用 | 45 500 | 66 886 | -31.97 |
| 式(3) | 采用 | 106 817 | 66 886 | 59.70 |
| 式(3) | 采用 | 85 850 | 66 886 | 28.35 |
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