機(jī)械設(shè)計(jì)畢業(yè)論文外文翻譯

1、附錄附錄1.外文文獻(xiàn)外文文獻(xiàn)原文：原文：MechanicalDesignAbstract:Amachineisacombinationofmechanismsothercomponentswhichtransfmstransmits.Examplesareenginesturbinesvehicleshoistsprintingpresseswashingmachinesmoviecameras.Manyoftheprinciplesm

2、ethodsofdesignthatapplytomachinesalsoapplytomanufacturedarticlesthatarenottruemachines.Theterm“mechanicaldesign“isusedinabroadersensethan“machinedesign“toincludetheirdesign.themotionstructuralaspectstheprovisionsfretenti

3、onenclosureareconsiderationsinmechanicaldesign.Applicationsoccurinthefieldofmechanicalengineeringinotherengineeringfieldsaswellallofwhichrequiremechanicaldevicessuchasswitchescamsvalvesvesselsmixers.Keywds:MechanicalDesi

4、gnmechanismsDesignProcessTheDesignProcessDesigningstartswithaneedrealexistingapparatusmayneedimprovementsindurabilityefficiencyweightspeedcost.Newapparatusmaybeneededtoperfmafunctionpreviouslydonebymensuchascomputationas

5、semblyservicing.WiththeobjectivewhollypartlyInthedesignpreliminarystageshouldallowtodesignthepersonnelfullytodisplaythecreativitynoteachkindofrestraint.Evenifhashadmanyimpracticalideasalsocaninthedesignearlytimenamelyinf

6、rontoftheplanblueprintiscrected.Onlythenonlythendoesnotsendtostopsuptheinnovationthementality.Usuallymustproposeseveralsetsofdesignproposalsthenperfmthecomparison.Hasthepossibilityverymuchintheplanwhichfinallydesignatedh

7、asusedcertainnotinplansomeideaswhichaccepts.Whenthegeneralshapeafewdimensionsoftheseveralcomponentsbecomeapparentanalysiscanbegininearnest.Theanalysiswillhaveasitsobjectivesatisfactysuperiperfmanceplussafetydurabilitywit

8、hminimumweightacompetitivecost.Optimumproptionsdimensionswillbesoughtfeachcriticallyloadedsectiontogetherwithabalancebetweenthestrengthsoftheseveralcomponents.Materialstheirtreatmentwillbechosen.Theseimptantobjectivescan

9、beattainedonlybyanalysisbasedupontheprinciplesofmechanicssuchasthoseofstaticfreactionfcesftheoptimumutilizationoffrictionofdynamicsfinertiaaccelerationenergyofelasticitystrengthofmaterialsfdesigneranalyst.Thefirstsixrule

10、sareparticularlyapplicableftheanalyst.1.Acreativeuseofneedofphysicalpropertiescontrolprocess.2.Recognizefunctionalloadstheirsignificance.3.Anticipateunintentionalloads.4.Devisemefavableloadingconditions.5.Provideffavable

11、stressdistributionstiffnesswithminimumweight.6.Usebasicequationstoproptionoptimizedimensions.7.Choosematerialsfacombinationofproperties.8.carefullystockintegralcomponents.9.Modifyafunctionaldesigntofitthemanufacturingpro

12、cessreducecost.10.Providefaccuratelocationnoninterferenceofpartsinassembly.Machinerydesigncoversthefollowingcontents.1.Providesanintroductiontothedesignprocessproblemfmulationsafetyfacts.2.Reviewsthematerialpropertiessta

13、ticdynamicloadinganalysisIncludingbeamvibrationimpactloading.3.Reviewsthefundamentalsofstressdefectionanalysis.4.Introducesfatiguefailuretheywiththeemphasisonstresslifeapproachestohighcyclefatiguedesignwhichiscommonlyuse

14、dinthedesignofrotationmachinery.5.Discussesthoughlythephenomenaofwearmechanismssurfacecontactstressessurfacefatigue.6.Investigatesshaftdesignusingthefatigueanalysistechniques.7.Discussesfluidfilmrollingelementbearingthey

15、application8.Givesathoughintroductiontothekinematicsdesignstressanalysisofspurgearsasimpleintroductiontohelicalbevelwmgearing.9.Discussesspringdesignincludingcompressionextensiontsionsprings.10.Dealswithscrewsfastenersin

16、cludingpowerscrewpreloadfasteners.11.Introducesthedesignspecificationofdiskdrumclutchesbrakes.MachineDesignThecompletedesignofamachineisacomplexprocess.Themachinedesignisacreativewk.Projectengineernotonlymusthavethecreat