欢迎来到人人文库网! | 帮助中心 人人文库renrendoc.com美如初恋!
人人文库网
首页 人人文库网 > 资源分类 > PDF文档下载

外文翻译--一个复杂的特征值分析与设计相结合的方法实验(DOE)研究盘式制动器 英文版.pdf

  • 资源大小:1.09MB        全文页数:18页
  • 资源格式: PDF        下载权限:游客/注册会员/VIP会员    下载费用:5
游客快捷下载 游客一键下载
会员登录下载
下载资源需要5

邮箱/手机号:
您支付成功后,系统会自动为您创建此邮箱/手机号的账号,密码跟您输入的邮箱/手机号一致,以方便您下次登录下载和查看订单。注:支付完成后需要自己下载文件,并不会自动发送文件哦!

支付方式: 微信支付    支付宝   
验证码:   换一换

友情提示
2、本站资源不支持迅雷下载,请使用浏览器直接下载(不支持QQ浏览器)
3、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰   

外文翻译--一个复杂的特征值分析与设计相结合的方法实验(DOE)研究盘式制动器 英文版.pdf

MULTICRAFTINTERNATIONALJOURNALOFENGINEERING,SCIENCEANDTECHNOLOGYVOL1,NO1,2009,PP254271INTERNATIONALJOURNALOFENGINEERING,SCIENCEANDTECHNOLOGYWWWIJESTNGCOM2009MULTICRAFTLIMITEDALLRIGHTSRESERVEDACOMBINEDAPPROACHOFCOMPLEXEIGENVALUEANALYSISANDDESIGNOFEXPERIMENTSDOETOSTUDYDISCBRAKESQUEALMNOUBY1,DMATHIVANAN2,KSRINIVASAN11AU/FRGINSTITUTEFORCAD/CAM,ANNAUNIVERSITY,CHENNAI600025,INDIA2DIRECTOROFCAEINFOTECH,CHENNAI600020,INDIAEMAILSNOUBYLUXORGMAILCOMMNOUBY,MATHVANYAHOOCOMDMATHIVANAN;CORRESPONDINGAUTHORSABSTRACTTHISPAPERPROPOSESANAPPROACHTOINVESTIGATETHEINFLUENCINGFACTORSOFTHEBRAKEPADONTHEDISCBRAKESQUEALBYINTEGRATINGFINITEELEMENTSIMULATIONSWITHSTATISTICALREGRESSIONTECHNIQUESCOMPLEXEIGENVALUEANALYSISCEAHASBEENWIDELYUSEDTOPREDICTUNSTABLEFREQUENCIESINBRAKESYSTEMSMODELSTHEFINITEELEMENTMODELISCORRELATEDWITHEXPERIMENTALMODALTESTTHE‘INPUTOUTPUT’RELATIONSHIPBETWEENTHEBRAKESQUEALANDTHEBRAKEPADGEOMETRYISCONSTRUCTEDFORPOSSIBLEPREDICTIONOFTHESQUEALUSINGVARIOUSGEOMETRICALCONFIGURATIONSOFTHEDISCBRAKEINFLUENCESOFTHEVARIOUSFACTORSNAMELY;YOUNG’SMODULUSOFBACKPLATE,BACKPLATETHICKNESS,CHAMFER,DISTANCEBETWEENTWOSLOTS,SLOTWIDTHANDANGLEOFSLOTAREINVESTIGATEDUSINGDESIGNOFEXPERIMENTSDOETECHNIQUEAMATHEMATICALPREDICTIONMODELHASBEENDEVELOPEDBASEDONTHEMOSTINFLUENCINGFACTORSANDTHEVALIDATIONSIMULATIONEXPERIMENTSPROVEDITSADEQUACYTHEPREDICTEDRESULTSSHOWTHATBRAKESQUEALPROPENSITYCANBEREDUCEDBYINCREASINGYOUNG’SMODULUSOFTHEBACKPLATEANDMODIFYINGTHESHAPEOFFRICTIONMATERIALBYADDINGCHAMFERONBOTHSIDESOFFRICTIONMATERIALANDBYINTRODUCINGSLOTCONFIGURATIONSTHECOMBINEDAPPROACHOFMODELINGBRAKESQUEALUSINGCEAANDDOEISFOUNDTOBESTATISTICALLYADEQUATETHROUGHVERIFICATIONTRIALSTHISCOMBINEDAPPROACHWILLBEUSEFULINTHEDESIGNSTAGEOFTHEDISCBRAKEKEYWORDSDISCBRAKESQUEAL,FINITEELEMENTANALYSIS,EXPERIMENTALMODALANALYSIS,DESIGNOFEXPERIMENTS1INTRODUCTIONBRAKESQUEALISANOISEPROBLEMCAUSEDBYVIBRATIONSINDUCEDBYFRICTIONFORCESTHATCANINDUCEADYNAMICINSTABILITYAKAY,2002DURINGTHEBRAKINGOPERATION,THEFRICTIONBETWEENTHEPADANDTHEDISCCANINDUCEADYNAMICINSTABILITYINTHESYSTEMUSUALLYBRAKESQUEALOCCURSINTHEFREQUENCYRANGEBETWEEN1AND20KHZSQUEALISACOMPLEXPHENOMENON,PARTLYBECAUSEOFITSSTRONGDEPENDENCEONMANYPARAMETERSAND,PARTLY,BECAUSEOFTHEMECHANICALINTERACTIONSINTHEBRAKESYSTEMTHEMECHANICALINTERACTIONSARECONSIDEREDTOBEVERYCOMPLICATEDBECAUSEOFNONLINEARCONTACTEFFECTSATTHEFRICTIONINTERFACETHEOCCURRENCEOFSQUEALISINTERMITTENTOREVENRANDOMUNDERCERTAINCONDITIONS,EVENWHENTHEVEHICLEISBRANDNEW,ITOFTENGENERATESSQUEALNOISE,WHICHHASBEENEXTENSIVELYSTUDIEDWITHTHEGOALOFELIMINATINGTHENOISEHOWEVER,MECHANISTICDETAILSOFSQUEALNOISEARENOTYETFULLYUNDERSTOODJOEETAL,2008SEVERALTHEORIESHAVEBEENFORMULATEDTOEXPLAINTHEMECHANISMSOFBRAKESQUEAL,ANDNUMEROUSSTUDIESHAVEBEENMADEWITHVARIEDSUCCESSTOAPPLYTHEMTOTHEDYNAMICSOFDISCBRAKESKINKAIDETAL,2003THEREASONFORTHEONSETOFINSTABILITYHASBEENATTRIBUTEDTODIFFERENTREASONSSOMEOFTHEMAJORREASONSARETHECHANGEOFTHEFRICTIONCHARACTERISTICWITHTHESPEEDOFTHECONTACTPOINTSIBRAHIM,1994;OUYANGETAL,1998;SHINETAL,2002THECHANGEOFTHERELATIVEORIENTATIONOFTHEDISKANDTHEFRICTIONPADSLEADINGTOAMODIFICATIONOFTHEFRICTIONFORCEMILLNER,1978,ANDAFLUTTERINSTABILITYWHICHISFOUNDEVENWITHACONSTANTFRICTIONCOEFFICIENTCHOWDHARYETAL,2001;CHAKRABOTRYETAL,2002;VONWAGNERETAL,2003;VONWAGNERETAL,2004INFACT,RECENTLITERATUREREVIEWSKINKAIDETAL,2003;PAPINNIEMIETAL,2002HAVEREPORTEDONTHECOMPLEXITYANDLACKOFUNDERSTANDINGOFTHEBRAKESQUEALPROBLEMTHOUGHMUCHWORKWASDONEONTHEISSUEOFSQUEAL,ITREQUIRESCONTINUOUSSTUDYANDINVESTIGATIONTOREFINETHEPREDICTIONACCURACYOFFINITEELEMENTMODELSOFBRAKEASSEMBLIESTOGIVEBRAKEDESIGNENGINEERSAPPROPRIATETOOLSTODESIGNQUIETBRAKESTHEREARETWOMAINCATEGORIESOFNUMERICALMETHODSTHATAREUSEDTOSTUDYTHISPROBLEM1TRANSIENTDYNAMICANALYSISHUETAL,NOUBYETAL/INTERNATIONALJOURNALOFENGINEERING,SCIENCEANDTECHNOLOGY,VOL1,NO1,2009,PP2542712551999;ABUBAKARETAL,2006AND2COMPLEXEIGENVALUEANALYSISCURRENTLY,THECOMPLEXEIGENVALUEMETHODISPREFERREDANDWIDELYUSEDLILES,1989;LEEETAL,1998;BLASCHKEETAL,2000;BAJERETAL,2003;ABUBAKARETAL,2006;LIUETAL,2007;MARIOETAL,2008;DAIETAL,2008INPREDICTINGTHESQUEALPROPENSITYOFTHEBRAKESYSTEMINCLUDINGDAMPINGANDCONTACTDUETOTHEQUICKNESSWITHWHICHITCANBEANALYSEDANDITSUSEFULNESSINPROVIDINGDESIGNGUIDANCEBYANALYSINGWITHDIFFERENTOPERATINGPARAMETERSVIRTUALLYMANYRESEARCHERSINTHEIRSTUDIESONTHEDYNAMICSOFBRAKESYSTEMTRIEDTOREDUCESQUEALBYCHANGINGTHEFACTORSASSOCIATEDWITHTHEBRAKESQUEALFOREXAMPLELILES,1989FOUNDTHATSHORTERPADS,DAMPING,SOFTERDISCANDSTIFFERBACKPLATECOULDREDUCESQUEALWHILSTINCONTRAST,HIGHERFRICTIONCOEFFICIENTANDWEAROFTHEFRICTIONMATERIALWEREPRONETOSQUEALLEEETAL,1998REPORTEDTHATREDUCINGBACKPLATETHICKNESSLEDTOLESSUNIFORMOFCONTACTPRESSUREDISTRIBUTIONSANDCONSEQUENTLYINCREASINGTHESQUEALPROPENSITYHUETAL,1999BASEDONTHEDOEANALYSISFOUNDTHATTHEOPTIMALDESIGNWASTHEONETHATUSEDTHEORIGINALFINGERLENGTH,THEVERTICALSLOT,THECHAMFERPAD,THE28MMTHICKNESSOFDISC,ANDTHE10MMTHICKNESSOFFRICTIONMATERIALBROOKSETAL,1993FOUNDTHATBYSHIFTINGTHEPISTONSAWAYFROMTHELEADINGEDGEOFTHEPADSTHESYSTEMCOULDDESTABILISETHEYALSOREPORTEDTHATTHEPREDICTEDUNSTABLESYSTEMWASDUETOTHECOUPLINGOFTRANSLATIONALANDROTATIONALMODESOFTHEDISCPARTICULARLYATHIGHVALUESOFPADSTIFFNESSFROMTHESENSITIVITYSTUDIES,THEYSUGGESTEDTHATTHEEFFECTIVEHALFLENGTHOFTHEPAD,THEPISTONMASSES,THEEFFECTIVEMASS,INERTIAANDGROUNDINGSTIFFNESSOFTHEDISCANDTHESECONDCIRCUITACTUATIONSTIFFNESSALSOHAVEPOTENTIALONTHEDISCBRAKEINSTABILITYSHINETAL,2002HAVESHOWNTHATTHEDAMPINGOFTHEPADANDTHEDISCWEREIMPORTANTINREDUCINGINSTABILITYTHEIRANALYSISALSOHASSHOWNANDCONFIRMEDTHATINCREASINGDAMPINGOFEITHERTHEDISCORTHEPADALONECOULDPOTENTIALLYDESTABILISETHESYSTEMLIUETAL,2007FOUNDTHATTHESQUEALCANBEREDUCEDBYDECREASINGTHEFRICTIONCOEFFICIENT,INCREASINGTHESTIFFNESSOFTHEDISC,USINGDAMPINGMATERIALONTHEBACKOFTHEPADSANDMODIFYINGTHESHAPEOFTHEBRAKEPADSDAIETAL,2008HAVESHOWNTHATTHEDESIGNOFTHEPADSWITHARADIALCHAMFERPOSSESSESTHELEASTNUMBEROFUNSTABLEMODES,WHICHIMPLIESLESSERTENDENCYTOWARDSSQUEALINTHEPRESENTSTUDY,ANINVESTIGATIONOFDISCBRAKESQUEALISDONEBYPERFORMINGCOMPLEXEIGENVALUEANALYSISUSINGFINITEELEMENTSOFTWAREABAQUS/STANDARDAPOSITIVEREALPARTOFACOMPLEXEIGENVALUEISBEINGSEENASANINDICATIONOFINSTABILITYTHOUGHTHEFESIMULATIONSCANPROVIDEGUIDANCE,ITWILLRATHERBETRIALANDERRORAPPROACHTOARRIVEATANOPTIMALCONFIGURATIONANDALSOONEMAYNEEDTORUNMANYNUMBEROFCOMPUTATIONALLYINTENSIVEANALYSESTOFORMULATETHE‘INPUTOUT’RELATIONSHIPSFORPOSSIBLEPREDICTIONHENCE,INTHEPRESENTINVESTIGATION,ANOVELAPPROACHISPROPOSEDBYINTEGRATINGTHECOMPLEXEIGENVALUEFEANALYSESWITHSTRUCTUREDDOETHEPROPOSEDAPPROACHISAIMEDTOWARDSPREDICTIONOFOPTIMALPADDESIGNTHROUGHTHEVARIOUSFACTORSOFTHEBRAKEPADGEOMETRICALCONSTRUCTIONTHEPAPERISORGANISEDASFOLLOWS,ITPRESENTSADETAILEDLITERATURESURVEYINTHISFIELDINTHERECENTPERIODFROMTHELITERATURESURVEYTHEMAINOBJECTIVESWEREFORMEDMETHODOLOGYTODEVELOPFEMODELOFTHEDISCBRAKEISPRESENTEDANDITWASSUBSEQUENTLYVALIDATEDUSINGEXPERIMENTALMODALANALYSISTHECEAAPPROACHISPRESENTEDINORDERTOPREDICTBRAKESQUEALTHENDOEAPPROACHFORSOFTCOMPUTINGISPRESENTEDALSOAMETHODOLOGYTOTESTTHEADEQUACYOFTHEDEVELOPEDSTATISTICALMODELISDISCUSSED2FINITEELEMENTMODELANDCOMPONENTCORRELATIONADISCBRAKESYSTEMCONSISTSOFADISCTHATROTATESABOUTTHEAXISOFAWHEEL,ACALIPER–PISTONASSEMBLYWHERETHEPISTONSLIDESINSIDETHECALIPERTHATISMOUNTEDTOTHEVEHICLESUSPENSIONSYSTEM,ANDAPAIROFBRAKEPADSWHENHYDRAULICPRESSUREISAPPLIED,THEPISTONISPUSHEDFORWARDTOPRESSTHEINNERPADAGAINSTTHEDISCANDSIMULTANEOUSLYTHEOUTERPADISPRESSEDBYTHECALIPERAGAINSTTHEDISCFIGURE1ASHOWSTHEFINITEELEMENTMODELOFTHECARFRONTBRAKEUNDERCONSIDERATION,BUILTUSINGTHEABAQUSFINITEELEMENTSOFTWAREPACKAGETHEBRAKEMODELUSEDINTHISSTUDYISASIMPLIFIEDMODELCONSISTINGOFTHETWOMAINCOMPONENTSCONTRIBUTINGTOSQUEALTHEDISCANDTHEPADFIGURE1BABFIGURE1FINITEELEMENTMODELSOFAAREALISTICBSIMPLIFIEDDISCBRAKEMODELNOUBYETAL/INTERNATIONALJOURNALOFENGINEERING,SCIENCEANDTECHNOLOGY,VOL1,NO1,2009,PP254271256ASIMPLIFIEDMODELWASUSEDINTHISSTUDYFORTHEFOLLOWINGREASONS1FORBRAKESQUEALANALYSIS,THEMOSTIMPORTANTSOURCEOFNONLINEARITYISTHEFRICTIONALSLIDINGCONTACTBETWEENTHEDISCANDTHEPADS2THESIMULATIONINCLUDESGEOMETRYSIMPLIFICATIONSTOREDUCECPUTIME,ALLOWINGFARMORECONFIGURATIONSTOBECOMPUTEDTHEDISCISMADEOFCASTIRONTHEPAIROFBRAKEPADS,WHICHCONSISTOFFRICTIONMATERIALANDBACKPLATES,AREPRESSEDAGAINSTTHEDISCINORDERTOGENERATEAFRICTIONTORQUETOSLOWTHEDISCROTATIONTHEFRICTIONMATERIALISMADEOFANORGANICFRICTIONMATERIALANDTHEBACKPLATESAREMADEOFSTEELTHEFEMESHISGENERATEDUSING19,000SOLIDELEMENTSTHEFRICTIONCONTACTINTERACTIONSAREDEFINEDBETWEENBOTHSIDESOFTHEDISCANDTHEFRICTIONMATERIALOFTHEPADSACONSTANTFRICTIONCOEFFICIENTANDACONSTANTANGULARVELOCITYOFTHEDISCAREUSEDFORSIMULATIONPURPOSESFIGURE2PRESENTSTHECONSTRAINTSANDLOADINGSFORTHEPADSANDDISCASSEMBLYTHEDISCISCOMPLETELYFIXEDATTHEFOURCOUNTERBOLTHOLESANDTHEEARSOFTHEPADSARECONSTRAINEDTOALLOWONLYAXIALMOVEMENTSTHECALIPER–PISTONASSEMBLYISNOTDEFINEDINTHESIMPLIFIEDMODELOFTHEDISCBRAKESYSTEM,HENCETHEHYDRAULICPRESSUREISDIRECTLYAPPLIEDTOTHEBACKPLATESATTHECONTACTREGIONSBETWEENTHEINNERPADANDTHEPISTONANDBETWEENTHEOUTERPADANDTHECALIPER,ANDITISASSUMEDTHATANEQUALMAGNITUDEOFFORCEACTSONEACHPADFIGURE2CONSTRAINTSANDLOADINGOFTHESIMPLIFIEDBRAKESYSTEMFORTHEPURPOSEOFVALIDATION,THEMAINBRAKECOMPONENTS,FREQUENCYRESPONSEFUNCTIONSFRF’SWEREMEASUREDATFREEFREEBOUNDARYCONDITIONSBYEXCITINGEACHCOMPONENTWITHASMALLIMPACTHAMMERWITHSENSITIVITYOF10MV/NANDAHARDTIPTHEACCELERATIONRESPONSEWASMEASUREDWITHALIGHTSMALLACCELEROMETERWITHSENSITIVITYOF10MV/GTHROUGHDYNAMICSIGNALANALYZERTYPEDEWE41TDSAFRFMEASUREMENTSWERERECORDEDFOREACHCOMPONENTUSINGSISOCONFIGURATIONSTHEN,THEFRFSWEREPROCESSEDUSINGDEWEFRFSOFTWAREINORDERTOIDENTIFYTHEMODALPARAMETERS,NAMELY;RESONANCEFREQUENCIES,MODALSHAPESANDDAMPINGVALUESFIGURE3SHOWSTHEEXPERIMENTALMODALTESTCOMPONENTSFIGURE3EXPERIMENTALMODALANALYSISCOMPONENTSTHEFREQUENCIESMEASUREDONTHEDISCANDCALCULATEDBYTHESIMULATEDMODELFORMODESWITHFREEFREEBOUNDARYCONDITIONSARESHOWNINTABLE1ITCANBEOBSERVEDTHATTHEMEASUREDANDSIMULATEDFREQUENCIESAREINGOODAGREEMENTFIGURE4SHOWSTHEMODESHAPESOFROTORWITHNODALDIAMETERSINASIMILARWAY,THEPARAMETERSFORTHEPADSAREESTIMATEDBASEDONTHEMEASUREDDATAINDICATEDINTABLE2THEMEASUREDANDSIMULATEDFREQUENCIESAREINGOODAGREEMENTFIGURE5SHOWSTHEMODESHAPESOFTHEPADNOUBYETAL/INTERNATIONALJOURNALOFENGINEERING,SCI

注意事项

本文(外文翻译--一个复杂的特征值分析与设计相结合的方法实验(DOE)研究盘式制动器 英文版.pdf)为本站会员(英文资料库)主动上传,人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知人人文库网(发送邮件至[email protected]或直接QQ联系客服),我们立即给予删除!

温馨提示:如果因为网速或其他原因下载失败请重新下载,重复下载不扣分。

关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服客服 - 联系我们

网站客服QQ:2846424093    人人文库上传用户QQ群:460291265   

[email protected] 2016-2018  renrendoc.com 网站版权所有   南天在线技术支持

经营许可证编号:苏ICP备12009002号-5