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1、Seediscussions,stats,andauthorprofilesforthispublicationat:https://www.researchgate.net/publication/289791099DesignofalownoiseenginegearcoverbasedontopologyandshapeoptimizationArticleinNeiranjiGongcheng/ChineseInternalCombustionEngineEngineering·December2008CITATIONSREADS2383authors,including:
2、MingdaLiHaiqiaoWeiTianjinUniversityTianjinUniversity363PUBLICATIONS4,031CITATIONS168PUBLICATIONS1,630CITATIONSSEEPROFILESEEPROFILESomeoftheauthorsofthispublicationarealsoworkingontheserelatedprojects:theNationalBasicResearchProgramofChina(973Program)(No.2011CB707201).ViewprojectDengquanFengVie
3、wprojectAllcontentfollowingthispagewasuploadedbyHaiqiaoWeion17February2017.Theuserhasrequestedenhancementofthedownloadedfile.第29卷第6期内燃机工程Vol.29No.62008年12月ChineseInternalCombustionEngineEngineeringDec.2008文章编号:1000-0925(2008)06-055-05290104基于拓扑优化和形状优化的低噪声齿轮室罩盖设计李民,舒歌群,卫海桥(天津大学内燃机燃烧学国家重点实验室,天津3
4、00072)DesignofaLowNoiseEngineGearCoverBasedonTopologyandShapeOptimizationLIMin,SHUGe2qun,WEIHai2qiao(StateKeyLaboratoryofEngines,TianjinUniversity,Tianjin300072,China)Abstract:Thenoisefrequencyanalysisandmodalanalysiswereusedtodeterminethecriticalfrequen2ciesofanenginegearcoverinordertoreducet
5、heradiatednoiseofthegearcover.Byusingthemethodofshapeoptimizationandtopologyoptimization,boththeshiftof5thorderfrequencyandtheweightofthegearcoverwereoptimizedthroughthesoftwareHyperWorks/Optistruct.Asresult,theweightofthegearcoverisreducedby0146kgandthe5thorderfrequencyisshiftedoutfromtherisk
6、area,andmodalfrequenciesoftheotherordersareraised.Theresultsofacousticsimulationshowthatinthefrequencyrangeof1600～1700Hz,thenoiseradiatedfromthegearcoverisdramaticallyreduced.摘要:为了降低发动机齿轮室罩盖的噪声辐射,进行了齿轮室罩盖的噪声频谱分析和模态分析,确定了齿轮室罩盖噪声主要频率区域,使用HyperWorks/Optistruct软件,采用拓扑优化和形状优化的方法,对第5阶移频和重量最小为目标进行了优化
7、设计。优化后的齿轮室罩盖重量减轻了0146kg,第5阶模态频率被移出了危险区域,其余各阶模态频率均得到了提高。声学模拟计算结果表明:在1600～1700Hz频率区域内,优化后的齿轮室辐射噪声得到明显降低。关键词:内燃机;发动机;齿轮室罩盖;形状优化;拓扑优化;噪声Keywords:ICengine;engine;gear2cover;shapeoptimization;topologyoptimization;noise中图分类号:TK423文献标识码:A向自动寻优的
