Article(id=1210382911191249076, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1210382907521242019, articleNumber=null, orderNo=null, doi=10.19710/J.cnki.1003-8817.20230155, 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=1766507373854, onlineDateStr=2025-12-24, pubDate=1708358400000, pubDateStr=2024-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1766507373854, onlineIssueDateStr=2025-12-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1766507373854, creator=13701087609, updateTime=1766507373854, updator=13701087609, issue=Issue{id=1210382907521242019, tenantId=1146029695717560320, journalId=1189873562199433220, year='2024', volume='', issue='2', 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=1766507372980, creator=13701087609, updateTime=1766507372980, updator=13701087609, preIssue=null, nextIssue=null, ext=null, issueFiles=null}, startPage=46, endPage=51, ext={EN=ArticleExt(id=1210382911421935802, articleId=1210382911191249076, tenantId=1146029695717560320, journalId=1189873562199433220, language=EN, title=Analysis and Optimization of Welding Deformation on Vehicle Exhaust Pipe Flange, columnId=null, journalTitle=Automobile Technology & Material, columnName=null, runingTitle=null, highlight=null, articleAbstract=
When the exhaust pipe is welded with the flange, the welding deformation of the flange affects the tightness of the exhaust pipe assembly. In order to avoid excessive welding deformation of flange during manufacturing, the FEA model was established with the moving Gaussian heat source to simulate flange welding process. After analyzing and comparing the temperature field, stress and strain results of flanges under different constraint conditions and different welding parameters, the solution that can effectively reduce the welding deformation of flanges in the production and manufacturing of exhaust pipes was determined. This paper proposed suggestions of welding electric current, welding speed and heat source radius, which provided theoretical basis for the optimization of welding process of exhaust pipe flange.
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为避免排气系统管件与法兰焊接中法兰焊接变形过大影响后期排气管装配的密封性,通过建立有限元模型并使用移动高斯热源加载模拟法兰的焊接过程。在分析对比不同约束条件和不同焊接参数条件下法兰的温度场、应力、应变结果后,确定排气管生产制造过程中能够有效减小法兰焊接变形的方案。提出建议的焊接电流、焊接速度和热源半径,为排气管法兰焊接工艺优化提供理论依据。
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秦星(1981—),男,工程师,硕士学位,主要从事汽车排气系统设计及仿真。
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秦星(1981—),男,工程师,硕士学位,主要从事汽车排气系统设计及仿真。
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秦星(1981—),男,工程师,硕士学位,主要从事汽车排气系统设计及仿真。
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Keyword(id=1210382915406524803, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=CN, orderNo=3, keyword=移动高斯热源), Keyword(id=1210382915486216582, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=CN, orderNo=4, keyword=温度场)], refs=[Reference(id=1210382918267040235, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, doi=null, pmid=null, pmcid=null, year=2022, volume=41, issue=9, pageStart=140, pageEnd=146, url=null, language=null, rfNumber=[1], rfOrder=0, authorNames=崔虎威, 樊开敬, journalName=重庆交通大学学报(自然科学版), refType=null, unstructuredReference=崔虎威, 樊开敬. 平板对接焊温度场与残余应力数值模拟[J].
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ANSYS热源模拟形式, figureFileSmall=lw280a0DOXwPquh2LzC+Ig==, figureFileBig=tM6oBwFS7TPklAbT9cgKCg==, tableContent=null), ArticleFig(id=1210382916744507828, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=EN, label=null, caption=null, figureFileSmall=rW2x1WzMNeZW2KRjTvFAQg==, figureFileBig=OHe1uzViRyTV3ilmIAn2PA==, tableContent=null), ArticleFig(id=1210382916840976823, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=CN, label=图7, caption=
对流薄膜系数, figureFileSmall=rW2x1WzMNeZW2KRjTvFAQg==, figureFileBig=OHe1uzViRyTV3ilmIAn2PA==, tableContent=null), ArticleFig(id=1210382916937445818, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=EN, label=null, caption=null, figureFileSmall=qcOqy9IsklKBqwI1JQgNjg==, figureFileBig=tbu6Z2EPx+w8Yba0hx72ow==, tableContent=null), ArticleFig(id=1210382917017137597, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=CN, label=图8, caption=
4个时刻下的温度场, figureFileSmall=qcOqy9IsklKBqwI1JQgNjg==, figureFileBig=tbu6Z2EPx+w8Yba0hx72ow==, tableContent=null), ArticleFig(id=1210382917084246463, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=EN, label=null, caption=null, figureFileSmall=CvxAt9G/gSgDZsxE81u+JA==, figureFileBig=jUEUKbGwpcSQo8k1vj1Ijg==, tableContent=null), ArticleFig(id=1210382917147161024, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=CN, label=图9, caption=
温度场热源中心点温度变化, figureFileSmall=CvxAt9G/gSgDZsxE81u+JA==, figureFileBig=jUEUKbGwpcSQo8k1vj1Ijg==, tableContent=null), ArticleFig(id=1210382917235241411, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=EN, label=null, caption=null, figureFileSmall=XA7lMgho/57zoSLKQen9CA==, figureFileBig=GV/skwhjJC3IujIrP9AksA==, tableContent=null), ArticleFig(id=1210382917310738886, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=CN, label=图10, caption=
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焊缝热影响区组织变化示意, figureFileSmall=hzFaHFs3ORJ/jyEgg5UQPQ==, figureFileBig=vH6lB5hfF/NsuNmqo03yug==, tableContent=null), ArticleFig(id=1210382917533037006, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=EN, label=null, caption=null, figureFileSmall=LYgmmDMghARcJKlcmy2aYQ==, figureFileBig=sX11R4tdCynv1LfaeL7Bnw==, tableContent=null), ArticleFig(id=1210382917587562960, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=CN, label=图12, caption=
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160 A,v =5 mm/s 应力与应变结果, figureFileSmall=LYk5xMsNlPcm3W76dasPOg==, figureFileBig=eZskC3uRQ+1hyyTWiGNXYg==, tableContent=null), ArticleFig(id=1210382917797278169, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 时刻点/s | 仿真最高温度/℃ | 实测最高 温度/℃ | 误差/% |
| 0 | 584 | 526 | 10 |
| 13 | 1 292 | 1 337 | 3.5 |
| 21 | 1 308 | 1 349 | 3.1 |
| 31 | 1 310 | 1 386 | 6.5 |
), ArticleFig(id=1210382917868581340, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=CN, label=表1, caption=
温度场仿真结果与实测结果对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 时刻点/s | 仿真最高温度/℃ | 实测最高 温度/℃ | 误差/% |
| 0 | 584 | 526 | 10 |
| 13 | 1 292 | 1 337 | 3.5 |
| 21 | 1 308 | 1 349 | 3.1 |
| 31 | 1 310 | 1 386 | 6.5 |
), ArticleFig(id=1210382917923107295, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
焊接电流 /A | 焊接电压 /V | 热源有效半径 /mm | 焊接速度 /mm·s-1 |
| 180 | 23 | 3 | 3 |
| 180 | 23 | 3 | 4 |
| 180 | 23 | 3 | 5 |
| 160 | 23 | 3 | 3 |
), ArticleFig(id=1210382918015381986, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=CN, label=表2, caption=
热源参数调整方案
, figureFileSmall=null, figureFileBig=null, tableContent=
焊接电流 /A | 焊接电压 /V | 热源有效半径 /mm | 焊接速度 /mm·s-1 |
| 180 | 23 | 3 | 3 |
| 180 | 23 | 3 | 4 |
| 180 | 23 | 3 | 5 |
| 160 | 23 | 3 | 3 |
), ArticleFig(id=1210382918090879461, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 法兰约束方式 | 焊接电流/A | 焊接速度 /mm·s-1 | 法兰端面的 残余应力/MPa | 法兰端面的应变/% |
| 180 | 3 | 17.2 | 0.3 |
| 厚板约束 | 180 | 3 | 178 | 0.05 |
| 厚板约束 | 160 | 5 | 98 | 0.02 |
), ArticleFig(id=1210382918174765544, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382911191249076, language=CN, label=表3, caption=
主要3种方案的结果对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 法兰约束方式 | 焊接电流/A | 焊接速度 /mm·s-1 | 法兰端面的 残余应力/MPa | 法兰端面的应变/% |
| 180 | 3 | 17.2 | 0.3 |
| 厚板约束 | 180 | 3 | 178 | 0.05 |
| 厚板约束 | 160 | 5 | 98 | 0.02 |
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