SMT公司NVH解决方案XXXX

CHARTWELLHOUSE,67-69HOUNDSGATE,NOTTINGHAM,NG16BBtel.+44(0)1159419839|fax.[phone]©2014SMARTMANUFACTURINGTECHNOLOGYLTD.ApresentationofSMT’scompleteNVHsolutionSMT完整的NVH解决方案介绍Gearbox&TransmissionNoise齿轮箱&传动系统噪音DrOwenHarrisApril2015www.smartmt.comPresentationStructure目录BriefIntroductiontoSMTSMT公司简介TheProblem:AutomotiveGearboxWhine问题：车辆传动系统啸叫TheSMTNVHTools&ApproachSMT的工具和方法SMTExperience(CaseStudies)SMT的经验（案例分析）Noise,Vibration&TEMeasurements噪音、振动&TE测量GearWhineSimulation&Analyses齿轮啸叫仿真&分析Conclusions总结Slide2www.smartmt.com©2015SMARTMANUFACTURINGTECHNOLOGYLTD.Slide3www.smartmt.com©2015SMARTMANUFACTURINGTECHNOLOGYLTD.BriefIntroductiontoSMTSMT公司简介SMTisaglobalsoftwareandserviceproviderbasedintheUKSMT在全球范围内提供软件及技术服务，总部位于英国CAESoftwareCAE软件Thedevelopmentofsoftwarewhichhelpscompaniesincreaseefficiency,improvedesign,andlowercostsintransmissionanddrivetraindevelopmentandmanufacture.SMT开发的软件能够帮助客户在传动系统、动力传动系统的开发和制造方面提高效率，改进设计，并且降低成本。TechnicalServices技术服务SMTundertakesprojectsforcustomerslookingforhighlyexperiencedengineerswithconsiderableexperienceinallaspectsoftransmissiondesign,developmentandprototyping.SMT拥有众多经验丰富的工程师，他们在传动系统设计、开发与样机制造的所有方面都有着出众的经验，可以和客户实施相关项目。PresentationStructure目录BriefIntroductiontoSMTSMT公司简介TheProblem:AutomotiveGearboxWhine问题：车辆传动系统啸叫TheSMTNVHTools&ApproachSMT的工具和方法SMTExperience(CaseStudies)SMT的经验（案例分析）Noise,Vibration&TEMeasurements噪音、振动&TE测量GearWhineSimulation&Analyses齿轮啸叫仿真&分析Conclusions总结Slide4www.smartmt.com©2015SMARTMANUFACTURINGTECHNOLOGYLTD.Slide5AutomotiveGearboxNoise车辆传动系统噪音Inmostvehicleswithgeareddrive-trainsthegearsandotherrotatingpartscanbeheardandseenas:在很多有齿轮传动链的车辆中，齿轮或其它旋转件会被听到和看到：•Adistinct‘tonal’frequencynoise,itsfrequenciesincreaseasvehiclespeedincreases一个“音调”明确的频率噪音，其频率随车速增加而增加•Lesstonal,morebroadbandfrequencynoiseisassociatedwithgearsrattling音调不定，频率更加宽泛的噪音一般和齿轮敲击有关•Moredetailedmeasurements,analysisandknowledgeofdrivetrainarerequiredtoidentifyandreducenoisesources想要确定并降低噪音来源，需要对传动链更多详细的测量、分析和了解Accelerating加速De-accelerating减速www.smartmt.com©2015SMARTMANUFACTURINGTECHNOLOGYLTD.Clear‘whine’:distinctfrequenciesproportionaltovehiclespeed齿轮啸叫：精确的频率和车速成比例Slide6WhyDiscussAutomotiveGearboxNoise?为何要讨论车辆传动系统噪音？Ingeneral,automotivegearboxnoiseismoredifficulttoidentifyandresolvethanindustrygearboxesduetogreaterrangeofoperatingspeedandtorquevariation一般来说，车辆传动系统噪音比工业齿轮箱会更加难确定和解决，因为其工作转速、扭矩波动都会更加大Expectationtoautomotivenoiseimprovementisconstantlyincreasingwhilepeople’slivingstandardisimproving随着人们生活水平的提高，对车辆噪音的期待值也会持续提高Inparticular,thedistinct‘tonal’frequencynoise,ismoreunbearablethangearrattleforhumanbeing,henceMUSTcontrolittomeetincreasinglystrictmarketrequirement尤其是有明确音调的噪音，对用户来说会比齿轮敲击噪音更难以接受，所以必须要控制该噪音，来满足市场日益严格的需求Veryoften,gearwhineisthemajorcontributortowardsthedistinct‘tonal’frequencynoise经常性地，齿轮啸叫是上述明确音调噪音的主要贡献者www.smartmt.com©2015SMARTMANUFACTURINGTECHNOLOGYLTD.Slide7Historicallyindevelopedmarketsamorepressingissuewithmorerefinedvehicles从发达市场历史经验看，更轻量化的车辆的一个重要问题是：•Constantrefinementofvehicleengine&bodynoiseplaceseverincreasingdemandsontransmissionnoise.Gearsinherentlygeneratenoise对车辆发动机和车身的持续性轻量化会增加对传动系统噪音的要求，齿轮天生是会产生噪音的•Optimisingtransmissionsforreducedweightcanincreasegearnoise对车辆传动系统的减重优化会增加齿轮噪音NoiseofAxle&EV&HEV,inparticulargearwhine,issuesarecontinuouslybeingraisedbySMTworld-widecustomers车桥&电动车&混合动力车辆的噪音，特别是齿轮啸叫，一直被SMT在全球范围内的客户们不断提到NoisebecomingmoreofanissueindevelopingmarketslikeChina,astechnologylevelshavebeenraisedandinternalmarketbecomesmorecompetitive噪音问题在中国这样的发展中市场中变得越来越重要，因为技术水平在提高而内部市场竞争在加剧www.smartmt.com©2015SMARTMANUFACTURINGTECHNOLOGYLTD.WhyDiscussAutomotiveGearboxNoise?为何要讨论车辆传动系统噪音Slide8TypicalAutomotiveGearboxNoise典型的车辆传动系统噪音ConventionalmanualandATtransmission:stillseesignificantgearwhineissues,particularlywhereweightoptimisationhasbeundertaken传统的手动或自动变速箱：还是能看到很多齿轮啸叫问题，尤其是做过减重优化的AxlesNVH&gearwhineissuesarewidelyseeninbothdeveloped&developingmarkets.ParticularlyforrefinedSUVs.车桥NVH&齿轮啸叫问题在发达市场和发展中市场都能经常看到，尤其是轻量化的SUV中Electricvehiclehubdrive,potentiallystringentnoiserequirements,aslessenginenoise.GoodexampletoexplainmanyofNVHconceptsapplicabletoautomotiveandindustrialgearboxes.电动车轮毂驱动潜在有迫切的噪音需求，因为少了发动机噪音。这是一个很好的例子来说明可用于汽车传动系统或工业齿轮箱的NVH概念SimplifiednonconfidentialmodelrepresentingseveralSMTprojectsinthisareaSMT用简化过的不保密的模型来给大家展示SMT在此领域做过的几个项目www.smartmt.com©2015SMARTMANUFACTURINGTECHNOLOGYLTD.PresentationStructure目录BriefIntroductiontoSMTSMT公司简介TheProblem:AutomotiveGearboxWhine问题：车辆传动系统啸叫TheSMTNVHTools&ApproachSMT的工具和方法SMTExperience(CaseStudies)SMT的经验（案例分析）Noise,Vibration&TEMeasurements噪音、振动&TE测量GearWhineSimulation&Analyses齿轮啸叫仿真&分析Conclusions总结Slide9www.smartmt.com©2015SMARTMANUFACTURINGTECHNOLOGYLTD.Slide10SMTNVHSolution=Tools+Approach+ExpertiseSMTNVH解决方案=工具+方法+专家经验1.Tools工具MASTA-Design/Optimisegearbox&simulategearboxatrigtestMASTA-设计/优化传动系统&模拟传动系统台架实验MEASA-TE&NVHtesting/measurementanddataanalysisMEASA-TE&NVH测试/测量和数据分析DRIVA-Multi-body-dynamicssimulationforgearboxordrivetraininvehicletestDRIVA-针对传动系统或整车传动链试验的多体动力学仿真2.ApproachorMethodology方