基于虛擬樣機(jī)技術(shù)的70t級(jí)新型通用敞車抗疲勞設(shè)計(jì).pdf

1、分類號(hào)：UDC：U27393Y1404967學(xué)校代號(hào)：10150密級(jí)：——學(xué)號(hào)：G2004005峽建交積摯工程碩士學(xué)位論文基于虛擬樣機(jī)技術(shù)的70t級(jí)新型通用敞車抗疲勞設(shè)計(jì)ANTIFATIGUEDESIGNON70TNEWTYPEGENERALPURPOSEUSEOPENTOPWAGONBASEDoNVIRTUALMODELMACHINETECHNOLOGY學(xué)生姓名：校內(nèi)導(dǎo)師及職稱：企業(yè)導(dǎo)師及職稱：工程領(lǐng)域：研究方向：申請(qǐng)學(xué)位：論文答辯日

2、期：學(xué)位授予單位：關(guān)曉麗兆文忠教授范國(guó)海高工車輛工程車輛CAE關(guān)鍵技術(shù)工程碩士2008年6月12日大連交通大學(xué)大連交通大學(xué)工程碩士學(xué)位論文AbstractWithimplementationofstridedevelopmentstrategyforChinaRailways，aseriesofheavyhaulbrandnewproductsrunningathigherspeedhavebeengivenbirthtothemark

3、etinrailwayindustrySincethesenewproductsputintoservice，theproblemoffatiguebreakagehasbecomemoreprominentthanbeforeHence，fordevelopmentof70tnewtypegeneralpurposeuseopentopwagon，ifthetraditionalstaticstrengthdesignphilosop

4、hywereusedforproductdesign，itwouldinevitablyresultinmuchmorestaticstrengthoftheproductstructureavailable，butinsufficientfatiguestrengthexistingthere，whichwouldbringintheserioussafetydangertothereliableserviceoftheproduct

5、Therefore，itisofgreatsignificanceinrealityincarryingoutanti—fatiguedesignonwagonbodyof70tnewtypegeneralpurposeopentopwagonbasedonvirtualmodelmachinetechnologyThispaperpresentsthemajorresearchandstudyon70tnewtypegeneralpu

6、rposeUseopentopwagoninthefollowingaspects、Ⅳitllcarefulstudyofkeytechnicalknow—howofvirtualmodelmachinetechnology，thatistosay，onthebasisofperformancesimulationtechnology：Atfirst，consideringthestructurefeatureandtechnicalp

7、arametersof70tnewtypegeneralpurposeuseopentopwagon，thedetailedFEAmodelisestablishedforthewagonbodyThenthestaticstrengthanalysisandmodularanalysisisdoneonthemodelinaccordance、崩tllTB／T13351996“StrengthDesignandTestAccredit

8、ationSpecificationforRailwayRollingStock”ThepositionofthewagonbodyforthecrackmoreeasilyoccurringisfinalizedonthebasisoftheresultofstaticstrengthanalysisandweldingtypesforthestructureSecondly，theanti—fatiguedesignonthewel

9、dingseamonthekeypositionofwagonbodyfor70tnewtypegeneralpurposeuseopentopwagonisperformedbasedontheresultsoffiniteelementstaticstrengthanalysis，aspervariousloadspectrumsinAARstandardandduedynamicstressVStime，thencharacter

10、isticcalveofvariousweldingjointsasdescribedinAARstandardandMinerdamagetheoryFinally，uponcompletionofprototypewagonproduction，thefatiguelifeforecastiscarriedoutwitlltheresultofthestaticstrengthtestandtheloadspectruminAARs

11、tandardalsoincontrastwiththelifeforecastwiththeresultofFEA，whichillustratesthatweakpositionisbasicallythesameaseachotherItshowsthatitisgreatlysignificantandfeasibleforantifatiguedesignonthebasisofvirtualmodelmachinetechn

12、ologyAnti—fatiguedesignon70tnewtypegeneralpurposeuseopentopwagonasdescribedinthispaperattachesgreatimportanceforthereferencetesearchanddevelopmentoffuturenewproductAstherearevariousfactorsaffectingfatiguelifeforecastandf