4125a型柴油機曲軸結(jié)構(gòu)有限元模態(tài)分析-畢業(yè)設(shè)計論文

1、畢業(yè)設(shè)計(論文)課題名稱4125A型柴油機曲軸結(jié)構(gòu)有限元模態(tài)分析學(xué)生姓名學(xué)號1141103044系、年級專業(yè)機械與能源工程系指導(dǎo)教師教師職稱副教授2015年5月30日IIABSTRACTCrankshaftisoneofthemaincomponentsoftheenginetheimptantengineofthestresscomponentsthesizeparametersdeterminesengineoverallstruc

2、tureperfmanceganizationsizeenginelifereliability.Crankshaftwkingenvironmentdecidedtoentertainthecrankshaftcomplexthecrankshaftmustnotonlypressureinertiafcebutalsobythemomentbecausethecrankshaftacceptmecomplexsointhedesig

3、nofthecrankshaftrequirementsarerelativelyhighindertoavoidshowingoffthecrankshaftatwkwhenresonanceoccursresultinginfailureofthecrankshafttothemodalanalysisofthecrankshaftsothatwecanfindtheresonancefrequencyofthecrankshaft

4、crankshaftatwkthemodeofvibrationloadvariationwhichinthedesigncanavoidresonanceofcrankshaftdamagewhichtoimprovetheservicelifethereliabilityofthecrankshaftisveryeffective.Thepaperisonthestudyof4125Adieselenginecrankshaftfi

5、niteelementanalysis.ThroughthefiniteelementanalysissoftwareANSYSinthisregarddieselenginecrankshaftmodelingstaticanalysismodalanalysisthenwecanknowthewkloadofcrankshaftdangerouswksectioncrankshaftofresonancefrequencyvibra

6、tionmode.ThustheactualwkingconditionofcrankshaftcanbeinfthecrankshaftdesignreasonablearrangementofthecrankshaftstructuresizetoimprovethecrankshaftdesignwkingreliabilityAtdesigntimetakevariousmeasurestoimprovethestrengtho

7、fcrankshaftresonanceintervaltoavoidthedangeroussectionofthecrankshaft，reducethedevelopmentcycle，Soastoimprovethedesignqualityofthecrankshaftofthedieselengine.(1)TheuseofANSYS14.0tobuildthreedimensionalmodelofthecrankshaf

8、ttheparameterdeterminationunitgridtype.(2)firstinANSYSdeterminethemeshingaccuracymeshdensitythencarriesonthegriddivisionofthethreedimensionalsolidmodelestablishedtherestrictedmodeldegreesoffreedomthefloading.(3)UsingANSY