機械專業(yè)論文中英文

1、邵陽學(xué)院機械工程專業(yè)英語論文1GearboxNoise——CrelationwithTransmissionErrInfluenceofBearingPreload變速箱噪聲變速箱噪聲——相關(guān)的傳輸錯誤和軸承預(yù)壓的影響摘要摘要ABSTRACTThefiveappendedpapersalldealwithgearboxnoisevibration.Thefirstpaperpresentsareviewofpreviouslypubli

2、shedliteratureongearboxnoisevibration.Thesecondpaperdescribesatestrigthatwasspeciallydesignedbuiltfnoisetestingofgears.Finiteelementanalysiswasusedtopredictthedynamicpropertiesofthetestrigexperimentalmodalanalysisofthege

3、arboxhousingwasusedtoverifythetheeticalpredictionsofnaturalfrequencies.Inthethirdpapertheinfluenceofgearfinishingmethodgeardeviationsongearboxnoiseisinvestigatedinwhatisprimarilyanexperimentalstudy.Eleventestgearpairswer

4、emanufacturedusingthreedifferentfinishingmethods.Transmissionerrwhichisconsideredtobeanimptantexcitationmechanismfgearnoisewasmeasuredaswellaspredicted.Thetestrigwasusedtomeasuregearboxnoisevibrationfthedifferenttestgear

5、pairs.Themeasurednoisevibrationlevelswerecomparedwiththepredictedmeasuredtransmissionerr.Mostoftheexperimentalresultscanbeinterpretedintermsofmeasuredpredictedtransmissionerr.Howeveritdoesnotseempossibletoidentifyonesing

6、leparametersuchasmeasuredpeaktopeaktransmissionerrthatcanbedirectlyrelatedtomeasurednoisevibration.Themeasurementsalsoshowthatdisassemblyreassemblyofthegearboxwiththesamegearpaircanchangethelevelsofmeasurednoisevibration

7、considerably.Thisfindingindicatesthatotherfactsbesidesthegearsaffectgear邵陽學(xué)院機械工程專業(yè)英語論文3承。有限元模擬表現(xiàn)出同樣的傾向作為測量值。第五本文介紹如何通過優(yōu)化變速箱噪聲為減少傳輸錯誤齒輪幾何減少。關(guān)于齒輪偏差和不同扭矩的魯棒性考慮，以便找到一個齒輪幾何給予盡管從名義幾何由于制造公差偏差范圍內(nèi)以適當?shù)呐ぞ兀胍舻?。靜態(tài)和動態(tài)的傳輸錯誤，噪聲，振動測量和該。之

8、間的動態(tài)傳輸錯誤，房屋振動和噪聲的相關(guān)性研究了掃描速度從500到2500在恒轉(zhuǎn)矩轉(zhuǎn)速。沒有相關(guān)關(guān)系的動態(tài)傳遞誤差和噪聲。靜態(tài)加載的傳輸錯誤似乎與齒輪副的能力，激發(fā)動力系統(tǒng)中的齒輪箱振動相關(guān)。Keywds:geargearboxnoisevibrationtransmissionerrbearingpreload.關(guān)鍵詞關(guān)鍵詞：齒輪，變速箱，噪聲，振動，傳輸錯誤，軸承預(yù)緊力。1INTRODUCTION1引言引言1.1BackgroundN

9、oiseisincreasinglyconsideredanenvironmentalissue.Thisbeliefisreflectedindemsflowernoiselevelsinmanyareasofsocietyincludingthewkingenvironment.Employeesspendalotoftimeinthisenvironmentnoisecanleadnotonlytohearingimpairmen

10、tbutalsotodecreasedabilitytoconcentrateresultingindecreasedproductivityanincreasedriskofaccidents.Qualitytoohasbecomeincreasinglyimptant.Thequalityofaproductcanbedefinedasitsabilitytofulfillcustomers’dems.Thesedemsoftenc

11、hangeovertimethebestcompetitsinthemarketwillsetthestard.Noiseconcernsarealsoexpressedinrelationtoconstructionmachinerysuchaswheelloadersarticulatedhaulers.Thegearboxissometimesthedominantsourceofnoiseinthesemachines.Even

12、ifthegearnoiseisnottheloudestsourceitspurehighfrequencytoneiseasilydistinguishedfromothernoisesourcesisoftenperceivedasunpleasant.Thenoisecreatesanimpressionofpoquality.Indernottobeheardgearnoisemustbeatleast15dBlowertha