Article(id=1202254426565206911, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1202254424140899161, articleNumber=null, orderNo=null, doi=10.19710/J.cnki.1003-8817.20220342, 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=1764569392100, onlineDateStr=2025-12-01, pubDate=1684512000000, pubDateStr=2023-05-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1764569392100, onlineIssueDateStr=2025-12-01, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1764569392100, creator=13701087609, updateTime=1764569392100, updator=13701087609, issue=Issue{id=1202254424140899161, tenantId=1146029695717560320, journalId=1189873562199433220, year='2023', volume='', issue='5', 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=1764569391522, creator=13701087609, updateTime=1764576307752, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1202283432979161352, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1202254424140899161, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1202283432979161353, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1202254424140899161, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=9, endPage=13, ext={EN=ArticleExt(id=1202254427496342408, articleId=1202254426565206911, tenantId=1146029695717560320, journalId=1189873562199433220, language=EN, title=Failure Analysis of A Lightweight Drive Axle Differential Case, columnId=null, journalTitle=Automobile Technology & Material, columnName=null, runingTitle=null, highlight=null, articleAbstract=

During the assembly fatigue bench test of a newly developed light drive axle, the right differential case fractured. Starting from the design and production perspectives, the material, structure, and manufacturing deviations were reviewed using materials analysis, Finite Element Analysis(FEA), and 3D scanning inspection. Finally, it was found that the main cause for the failure of the differential case was the thickness and fillet size at the casting rib plate that were out of tolerance, and the stress concentration occurred after the case was loaded, which eventually caused the entire differential housing break. The differential housing optimized for the main cause passed the assembly bench test successfully.

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新开发的某轻型驱动桥进行总成疲劳台架试验时右侧差速器壳断裂，从设计和生产角度入手，借助材料分析、有限元计算和三维扫描检测手段分别对材料、结构和制造偏差进行复核，最终找到此次差速器壳失效的主要原因是铸造肋板处厚度和圆角尺寸超差，壳体受载后产生应力集中，最终导致差壳整体断裂，后续针对主因进行优化后的差速器壳顺利通过总成台架试验。

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黄晶晶（1994—），男，助理工程师，学士学位，研究方向为传动产品对标及性能分析。

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黄晶晶（1994—），男，助理工程师，学士学位，研究方向为传动产品对标及性能分析。

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样品编号	技术要求/HBW 5/750/20	检验结果/HBW 5/750/20	结果评价	检验方法
1#	160~210	161	合格	GB/T 231.1—2018金属材料 布氏硬度试验 第1部分: 试验方法 GB/T 231.4—2009金属材料 布氏硬度试验 第4部分：硬度值表
2#	160~210	163	合格
3#	160~210	163	合格

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布氏硬度检验结果

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样品编号	技术要求/HBW 5/750/20	检验结果/HBW 5/750/20	结果评价	检验方法
1#	160~210	161	合格	GB/T 231.1—2018金属材料 布氏硬度试验 第1部分: 试验方法 GB/T 231.4—2009金属材料 布氏硬度试验 第4部分：硬度值表
2#	160~210	163	合格
3#	160~210	163	合格

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样品编号	技术要求	检验结果	结果 评价	检验 方法
1#	石墨主要以球状为主；石墨球化等级：1~3级；石墨大小等级：6~8级；主要基体组织：铁素体。	基体区石墨呈球状；石墨球化等级1级；石墨大小等级7级；主要基体组织为铁素体，珠光体数量为珠5。	合格	GB/T 9441－2021球墨铸铁金相检验
2#			合格
3#			合格

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金相检验结果

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样品编号	技术要求	检验结果	结果 评价	检验 方法
1#	石墨主要以球状为主；石墨球化等级：1~3级；石墨大小等级：6~8级；主要基体组织：铁素体。	基体区石墨呈球状；石墨球化等级1级；石墨大小等级7级；主要基体组织为铁素体，珠光体数量为珠5。	合格	GB/T 9441－2021球墨铸铁金相检验
2#			合格
3#			合格

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