Article(id=1200066397071045605, tenantId=1146029695717560320, journalId=1189918454225211397, issueId=1200066388304949769, articleNumber=null, orderNo=null, doi=10.20104/j.cnki.1674-6546.20220092, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=1680710400000, revisedDateStr=2023-04-06, acceptedDate=null, acceptedDateStr=null, onlineDate=1764047725217, onlineDateStr=2025-11-25, pubDate=1684080000000, pubDateStr=2023-05-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1764047725217, onlineIssueDateStr=2025-11-25, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1764047725217, creator=13701087609, updateTime=1764047725217, updator=13701087609, issue=Issue{id=1200066388304949769, tenantId=1146029695717560320, journalId=1189918454225211397, year='2023', volume='', issue='5', pageStart='1', pageEnd='48', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1764047723127, creator=13701087609, updateTime=1764047957879, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1200067372989120561, tenantId=1146029695717560320, journalId=1189918454225211397, issueId=1200066388304949769, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1200067372989120562, tenantId=1146029695717560320, journalId=1189918454225211397, issueId=1200066388304949769, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=40, endPage=44, ext={EN=ArticleExt(id=1200066397461114884, articleId=1200066397071045605, tenantId=1146029695717560320, journalId=1189918454225211397, language=EN, title=Optimization of Road Noise Performance for A Battery Electric Vehicle, columnId=null, journalTitle=Automotive Engineer, columnName=null, runingTitle=null, highlight=null, articleAbstract=

In order to solve the problem of excessive road noise transmitted to the interior of battery electric vehicles in driving, this article investigated the tire, rear torsion beam and body panel by using the method of “source-path-response”, to identify the coupling between the mode of rear torsion beam and road excitation, which amplified road noise. By dynamical property analysis of body panel through virtual verification, it was identified that the coupling between the mode of rear side wall area and the mode of acoustic cavity was the main cause for excessive road noise in the vehicle. By adding a support structure between the side wall outer plate and C-pillar and D-pillar, the local stiffness of the side wall outer plate was improved, so as to optimize the modal frequency and vibration amplitude in the rear side wall area. The vehicle interior road noise test was carried out. The results show that vehicle interior noise is reduced obviously in the frequency ranges of 78~90 Hz, 120 Hz and 200 ~220 Hz, and its subjective evaluation of interior road noise meets the requirements.

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为解决某纯电动汽车行驶时传递到车内的路噪过大的问题，利用“源-路径-响应”的排查方法，对轮胎、后扭力梁、车身板件进行排查，识别出后扭力梁模态与路面激励耦合，对路噪起到了放大作用，通过虚拟验证对车身板件进行动态特性分析，识别出后侧围区域模态与声腔模态耦合，是整车车内路噪过大的主要原因。通过在侧围外板与C柱和D柱之间增加支撑结构，提升侧围外板局部刚度，由此优化后侧围区域的模态频率及振动幅值，对该方案进行车内路噪实车测试，结果表明，78~90 Hz、120 Hz、200~220 Hz频率区间车内噪声显著降低，主观评价车内路噪满足要求。

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序号	频率/Hz	振型
1	85	纵向伸缩
2	129	纵向伸缩
3	167	后部扭转
4	220	后部伸缩

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声腔模态分析结果

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序号	频率/Hz	振型
1	85	纵向伸缩
2	129	纵向伸缩
3	167	后部扭转
4	220	后部伸缩

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