Article(id=1217472509797122127, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1217472509256056911, articleNumber=null, orderNo=null, doi=10.19710/J.cnki.1003-8817.20230207, 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=1768197665881, onlineDateStr=2026-01-12, pubDate=1703001600000, pubDateStr=2023-12-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1768197665881, onlineIssueDateStr=2026-01-12, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1768197665881, creator=13701087609, updateTime=1768197665881, updator=13701087609, issue=Issue{id=1217472509256056911, tenantId=1146029695717560320, journalId=1189873562199433220, year='2023', volume='', issue='12', pageStart='1', pageEnd='66', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1768197665752, creator=13701087609, updateTime=1768198265668, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1217475025536467895, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1217472509256056911, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1217475025536467896, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1217472509256056911, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=26, endPage=32, ext={EN=ArticleExt(id=1217472510019420241, articleId=1217472509797122127, tenantId=1146029695717560320, journalId=1189873562199433220, language=EN, title=Fracture Failure Analysis of Battery Module Fixing Bolt for New Energy Vehicle, columnId=null, journalTitle=Automobile Technology & Material, columnName=null, runingTitle=null, highlight=null, articleAbstract=
The fracture of a high-strength bolt used for fixing battery module of a new energy vehicle in the process of vibration test was investigated and analyzed through physical and chemical inspection, assembly process and vibration test. The results of investigation and analysis show that the cause of fracture is the formation of fatigue source caused by improper bolt assembly, the fatigue source continues to expand under the combined action of alternating stress and radial shear force at the upper and lower joint plane of the failed bolt along Z-direction vibration, which eventually leads to fracture.
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某新能源汽车电池模组固定使用的高强度螺栓在振动试验过程中发生断裂,通过理化检验、装配工艺和振动测试情况多方面对螺栓断裂失效原因进行了调查分析。调查分析结果表明,螺栓装配不当形成疲劳源,在进行Z向振动时疲劳源在交变应力和失效螺栓的上下结合面处螺栓受径向剪切力的共同作用下不断扩展,最终导致断裂。
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曹中华(1985—),男,工程师,主要研究方向为材料改性技术和失效分析。
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曹中华(1985—),男,工程师,主要研究方向为材料改性技术和失效分析。
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曹中华(1985—),男,工程师,主要研究方向为材料改性技术和失效分析。
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2013(23):65-66., articleTitle=螺栓联接的预紧力与疲劳强度的讨论, refAbstract=null), Reference(id=1217498534006411353, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, doi=null, pmid=null, pmcid=null, year=2001, volume=null, issue=3, pageStart=5, pageEnd=8, url=null, language=null, rfNumber=[2], rfOrder=1, authorNames=余幼民, journalName=海南矿冶, refType=null, unstructuredReference=余幼民. 螺栓联接的疲劳破坏及改善措施[J].
海南矿冶,
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最终断裂区SEM形貌, figureFileSmall=TwY7Zp+C2XBB81hPEi+BAw==, figureFileBig=JtX7zAaPLyM0+UEpTyiCjA==, tableContent=null), ArticleFig(id=1217498530126680076, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=EN, label=null, caption=null, figureFileSmall=sGEzsZ0IbcptNBSXBUy3RA==, figureFileBig=ayl1fxj4uh72IrTgj+BUWg==, tableContent=null), ArticleFig(id=1217498530269286416, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=CN, label=图6, caption=
抛光态形貌, figureFileSmall=sGEzsZ0IbcptNBSXBUy3RA==, figureFileBig=ayl1fxj4uh72IrTgj+BUWg==, tableContent=null), ArticleFig(id=1217498530382532628, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=EN, label=null, caption=null, figureFileSmall=/sQJ4Ja5nXgVOl91XiFE/Q==, figureFileBig=nO4gob6hWAoaBFO9flPezA==, tableContent=null), ArticleFig(id=1217498530479001623, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=CN, label=图7, caption=
断裂失效螺栓显微组织形貌, figureFileSmall=/sQJ4Ja5nXgVOl91XiFE/Q==, figureFileBig=nO4gob6hWAoaBFO9flPezA==, tableContent=null), ArticleFig(id=1217498530583859227, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=EN, label=null, caption=null, figureFileSmall=pSY0lMf/+SgfXcP/SdMv9g==, figureFileBig=piGOzz+V1rmqS0d1YBHS9w==, tableContent=null), ArticleFig(id=1217498530655162399, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=CN, label=图8, caption=
断裂失效螺栓宏观形貌, figureFileSmall=pSY0lMf/+SgfXcP/SdMv9g==, figureFileBig=piGOzz+V1rmqS0d1YBHS9w==, tableContent=null), ArticleFig(id=1217498530722271267, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=EN, label=null, caption=null, figureFileSmall=noIeppZmE0LtcX/CqtmKRw==, figureFileBig=1a4VobNAjcymiHKOJMBKPg==, tableContent=null), ArticleFig(id=1217498530797768743, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=CN, label=图9, caption=
电池模组固定螺栓预紧力实际值, figureFileSmall=noIeppZmE0LtcX/CqtmKRw==, figureFileBig=1a4VobNAjcymiHKOJMBKPg==, tableContent=null), ArticleFig(id=1217498530877460521, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=EN, label=null, caption=null, figureFileSmall=VjH1wMZgynKhxiKDY/bEQA==, figureFileBig=y1MnHnFJCFvoJkFGMrD+mQ==, tableContent=null), ArticleFig(id=1217498532160917545, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=CN, label=图10, caption=
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S-N曲线, figureFileSmall=c0qNHDtFbafaIshl8X5htg==, figureFileBig=ENbCHvsKI008KEVzyqiQ7Q==, tableContent=null), ArticleFig(id=1217498532513239090, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=EN, label=null, caption=null, figureFileSmall=ZaUJQGm1XQI8VDdlt9twLQ==, figureFileBig=elmUNAQa2cPH9xNY0wei7w==, tableContent=null), ArticleFig(id=1217498532592930870, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=CN, label=图12, caption=
电池箱体模组安装底座平面度测试结果, figureFileSmall=ZaUJQGm1XQI8VDdlt9twLQ==, figureFileBig=elmUNAQa2cPH9xNY0wei7w==, tableContent=null), ArticleFig(id=1217498532701982777, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=EN, label=null, caption=null, figureFileSmall=gENgO06unUiqf4ShsGjHHQ==, figureFileBig=8NPVhX3vIKuIXNKbtYpF6Q==, tableContent=null), ArticleFig(id=1217498532781674556, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=CN, label=图13, caption=
螺栓单元应力功率谱密度RMS云图(Z向), figureFileSmall=gENgO06unUiqf4ShsGjHHQ==, figureFileBig=8NPVhX3vIKuIXNKbtYpF6Q==, tableContent=null), ArticleFig(id=1217498532873949246, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=EN, label=null, caption=null, figureFileSmall=WwtEpwBYXDZZAC6zMnSEsg==, figureFileBig=x+6uPngzfjPetXSYYg198Q==, tableContent=null), ArticleFig(id=1217498532932669506, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=CN, label=图14, caption=
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Z轴振动扫频, figureFileSmall=Sxc9cJpa4NYMUxJwZvhsbQ==, figureFileBig=5LkRF+k6OvFTAmRelMVoxw==, tableContent=null), ArticleFig(id=1217498533146579018, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1217472509797122127, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | C | Si | Mn | S | P | Cr | Ni | Cu | Mo |
| 标准值 | 0.33~0.38 | 0.15~0.35 | 0.60~0.90 | ≤0.030 | ≤0.030 | 0.90~1.20 | ≤0.25 | ≤0.30 | 0.15~0.30 |
| 表面实测值 | 0.366 | 0.212 | 0.663 | 0.005 | 0.017 | 0.973 | 0.014 | 0.008 | 0.169 |
| 芯部实测值 | 0.361 | 0.212 | 0.657 | 0.002 | 0.009 | 0.958 | 0.022 | 0.013 | 0.164 |
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断裂螺栓的化学成分(质量分数) %
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| 项目 | C | Si | Mn | S | P | Cr | Ni | Cu | Mo |
| 标准值 | 0.33~0.38 | 0.15~0.35 | 0.60~0.90 | ≤0.030 | ≤0.030 | 0.90~1.20 | ≤0.25 | ≤0.30 | 0.15~0.30 |
| 表面实测值 | 0.366 | 0.212 | 0.663 | 0.005 | 0.017 | 0.973 | 0.014 | 0.008 | 0.169 |
| 芯部实测值 | 0.361 | 0.212 | 0.657 | 0.002 | 0.009 | 0.958 | 0.022 | 0.013 | 0.164 |
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| 项目 | 硬度/HV0.3 | 平均值/HV0.3 |
| 芯部实测值 | 358.4,356.4,357.2 | 357.3 |
| 表面实测值 | 364.7,365.2,364.1 | 364.7 |
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螺栓维氏硬度测试结果
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| 项目 | 硬度/HV0.3 | 平均值/HV0.3 |
| 芯部实测值 | 358.4,356.4,357.2 | 357.3 |
| 表面实测值 | 364.7,365.2,364.1 | 364.7 |
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扭矩 要求 /N·m | 残余扭矩/N·m |
| 1# | 2# | 3# | 4# | 5# | 6# | 7# | 8# | 9# |
| (16.8±2) | 25.35 | - | 24.01 | 24.70 | 25.11 | 24.64 | 23.71 | 24.73 | 24.83 |
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振动后残余扭矩测量结果
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扭矩 要求 /N·m | 残余扭矩/N·m |
| 1# | 2# | 3# | 4# | 5# | 6# | 7# | 8# | 9# |
| (16.8±2) | 25.35 | - | 24.01 | 24.70 | 25.11 | 24.64 | 23.71 | 24.73 | 24.83 |
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| 最小值 | M4~M8 | M10~M16 | M18~M30 |
| NF E25-030 | 60 | 50 | 40 |
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NF E25-030推荐的螺栓疲劳强度值 MPa
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| 最小值 | M4~M8 | M10~M16 | M18~M30 |
| NF E25-030 | 60 | 50 | 40 |
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