会员注册 | 登录 | 微信快捷登录 支付宝快捷登录 QQ登录 微博登录 | 帮助中心 人人文库renrendoc.com美如初恋!
站内搜索 百度文库

热门搜索: 直缝焊接机 矿井提升机 循环球式转向器图纸 机器人手爪发展史 管道机器人dwg 动平衡试验台设计

   首页 人人文库网 > 资源分类 > PDF文档下载

外文翻译--分析和实验输出式凸轮阀系统的液压挺杆 英文版【优秀】.pdf

  • 资源星级:
  • 资源大小:594.62KB   全文页数:8页
  • 资源格式: PDF        下载权限:注册会员/VIP会员
您还没有登陆,请先登录。登陆后即可下载此文档。
  合作网站登录: 微信快捷登录 支付宝快捷登录   QQ登录   微博登录
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--分析和实验输出式凸轮阀系统的液压挺杆 英文版【优秀】.pdf

40KSMEJournal,VolA,No.1,pp.4047,1990.ANALYTICALANDEXPERIMENTALMOTIONANALYSISOFFINGERFOLLOWERTYPECAMVALVESYSTEMWITHAHYDRAULICTAPPETWonJinKim,HyuckSooJeonandYounSikParkReceivedSeptember11,1989Inthispaper,themotionofafingerfollowertypecamvalvesystemwithahydraulictappetwasanalyticallyandexperimentallystudied.First,theexactcontactpointbetweencamandfollowerforeachcorrespondingcamanglewassearchedbykinematicanalysis.Thena6degreeoffreedomlumpe0Mf0.05981K5.92x101.1280,0h1.1527X10Kif5.52X10Cf118.97Mv0.08544Kfc8.37x10Cfc197.97m,0.0092KVf4.33x10CVf94.13m20.0092K1.31x10C634.77K...K..9.33xlOCu.C.a2.355K.21.40x10C.23.534relationshipis4wascarefullycalculatedconsideringitsgeometricalshape.Alltheusedmass.stiffnessanddampingvaluesweresummarizedinTable2.whereaandpcanbedeterminedbycomparingmodelsimulationresultwithexperimentallymeasuredrecord.2.4MassandMomentofInertiaModelingValve,tappetplunger,andfollowermassMv,Mt,andMfweredirectlymeasured.ThefollowermomentofinertiaIfwhereEisbulkmodulus,Heisthelengthofcompressedoilchamber,andAeisplungerarea.Ontheotherhand.theequivalentdampingcoefficientwasestimatedbyassumingthattheoilistotallyincompressive.Itwasassumedthattheexcessiveoilduetoplungermotionflowscompletelythroughthediametralclearance.Thentheequivalentdampingvaluecanbepredictedfromthetheoryoffluidmechanics.Itisknownthatthedampingcoefficientchangeswiththedirectionofplungermotion.Thoseare7XRcScosOsinOYRcSsinOcosO3.1KinematicalAnalysisWhensearchingthepointwherecamandfollowercontacts,thetappetwasconsideredfixedpoint.Itwasfoundthattheinfluenceoftappetmotionuponcontactpointisnegligible.Thetappetmotion,whichisatmostO.Imm.isenoughsmallandcanbeconsiderednegligibleanddiffersinorderofmagnitudewithcamlift.WhenthecamdataisgivenwithdesiredcamliftS,theactualcamshapeX,.Y,contactingwithaflatfollower,canbeobtainedfromEq.7Thebaselinerockerarmratiois1.47andthefluctuatingrangeofrockerarmratiovariesfrom1.15to1.97duringthecycle.ThefingerfollowertypeORCcamvalvesystemischaracterizedwithvaryingrockerarmratiowithcamshaftrotations.Sothekinematicalanalysistosearchtheexactcontactpointsbetweencamandfollowerisinevitablebeforedoingdynamicanalysis.3.ANALYSISwhereRciscambasecircle.0iscamangle,Sisflatfollowerdisplacement,andXandYspecifycamshape.TheincrementofSabout0canbecalculatedwithcubicsplineinterpolationShoup.1979.WhenthecamshapeX.Yisgiven,thecontactpointbetweencamandfollowercanbefoundbykinematicalanalysis.Fig.4showstheideahowtofindthecontactpoint.Theproceduresare.first,rotatethefolloweraroundafixedcam.thenfindoutthelocusoffollowercenterCCNext.searchthecontactpointforeachfollowerrotatingangleOcusingtheprinciplethatthecontactpointis6whereJ1.isoilviscouscoefficient,Lisplungerlength,Rpisplungerradius,andhisclearancebetweencylinderandplunger.AlltappetdimensionsandpropertiesaregiveninTable1.Equations4,5derivedabovearetwoextremecases.oneisassumedtotallycompressiveandtheotheristotallyincompressive.Butinactualsituation,thedragforceFdduetoplungermotionwillbeplacedsomewhereinthemiddleofthetwovaluesKreuterandMass.1987.AsintroducingtwocoefficientsaandPOaI,Op1,thedragforcecanbemodeledasEq.6.

注意事项

本文(外文翻译--分析和实验输出式凸轮阀系统的液压挺杆 英文版【优秀】.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([email protected]),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。

copyright@ 2015-2017 人人文库网网站版权所有
苏ICP备12009002号-5