有限元瞬態(tài)分析

我展建久上算有限元與熱分析數(shù)值仿真大作業(yè)課程：有限元與熱分析數(shù)值仿真授課老師：錢(qián)作勤（老師）學(xué)院：能動(dòng)學(xué)院班級(jí)：動(dòng)力工程152班姓名：董理學(xué)號(hào)：10497316023242017年1月13日目錄基于ANSYS對(duì)法蘭的瞬態(tài)/穩(wěn)態(tài)傳熱過(guò)程錯(cuò)誤！未定義書(shū)簽。TOC\o"1-5"\h\z一、問(wèn)題描述3\o"CurrentDocument"二、問(wèn)題分析3\o"CurrentDocument"三、求解步驟4\o"CurrentDocument"第一步：模型繪圖定型4第二步：定義材料的屬性錯(cuò)誤!未定義書(shū)簽。\o"CurrentDocument"第三步：建立幾何模型5\o"CurrentDocument"第四步：參數(shù)設(shè)置6第五步：網(wǎng)格劃分錯(cuò)誤!未定義書(shū)簽。第六步：導(dǎo)熱參數(shù)設(shè)置錯(cuò)誤!未定義書(shū)簽。四、結(jié)果顯示錯(cuò)誤!未定義書(shū)簽?；贏NSYS的法蘭的熱分析一、問(wèn)題描述（穩(wěn)態(tài)）法蘭（Flange）,又叫法蘭凸緣盤(pán)或突緣。法蘭軸與軸之間相互連接的零件，用于管端之間的連接；也有用在設(shè)備進(jìn)出口上的法蘭，用于兩個(gè)設(shè)備之間的連接，如減速機(jī)法蘭。法蘭上有孔眼，螺栓使兩法蘭緊連，法蘭間用襯墊密封。水泵和閥門(mén)，在和管道連接時(shí)，這些器材設(shè)備的局部，也制成相對(duì)應(yīng)的法蘭形狀，也稱為法蘭連接。凡是在兩個(gè)平面周邊使用螺栓連接同時(shí)封閉的連接零件，一般都稱為'法蘭二如通風(fēng)管道的連接，這一類(lèi)零件可以稱為"法蘭類(lèi)零件”。法蘭是使一種常見(jiàn)產(chǎn)品，為保證法蘭的散熱性能達(dá)到設(shè)計(jì)要求，從而避免產(chǎn)品因過(guò)熱造成損壞，需對(duì)其進(jìn)行熱分析，計(jì)算在實(shí)際工況下的溫度分布，校核其散熱性能。在Ansys的Workbench環(huán)境下使用Geometry模塊和Steady-Thermal模塊法蘭的基礎(chǔ)部分參數(shù)為大直徑D為92mm，小直徑R為15mm，高為30mm，厚度為30mm。二、問(wèn)題分析該問(wèn)題屬于穩(wěn)態(tài)熱傳導(dǎo)問(wèn)題。根據(jù)問(wèn)題的軸對(duì)稱性（幾何結(jié)構(gòu)軸對(duì)稱、載荷軸對(duì)稱及邊界條件軸對(duì)稱），可以選擇過(guò)圓柱體縱剖面的一半建立平面有限元模型，并選擇相應(yīng)的平面熱分析單元進(jìn)行求解；也可選擇四分之一個(gè)圓柱體建立體有限元模型并選擇相應(yīng)的體單元進(jìn)行求解。下面進(jìn)行求解。三、求解步驟ANSYS控制面板GUI操作步驟如下:第一步：模型繪圖定型在CATIA繪圖軟件中繪出法蘭的成品圖第二步：定義材料的屬性(1)在MainMenu中選擇MaterialMode,單擊對(duì)話框右側(cè)的ThermalConducivity輸入15.1，以同樣的方式輸入溫度為21。

第三步：建立幾何模型(1)選擇AnalysisSystems>Steady-StateThermal命令，逐個(gè)向下點(diǎn)擊生成模型圖如圖所示《心FW|響I?(S■?NfCr御m：4H^■《心FW|響I?(S■?NfCr御m：4H^■VLrr^itrt-

[3IPirt,!BmIji■Minic?jutaf*-^PB4%nirniip.^UkakhdJ?*WtS汕口vtiFws*fcjHscrlfc4EIYnPraatsLrsE^odhiH3N19材料的導(dǎo)熱系數(shù)為400w/(m?k),表面對(duì)流換熱系數(shù)為5w/(m2?k)。WeWe第五步：網(wǎng)格劃分采用sweep網(wǎng)格劃分，如圖:TTt-6IES由，方TTt-6IES由，方寺?:歐：安安國(guó)孔鼠弟營(yíng)一“J_kg?*nfcr曲餉冷早■X*/￡早，■X*t*|him林5占!7度閶如$IReE』L啪eMhTeKHdp11部fir*AwihB■■■眼岫■由3廿叫,Pli^itiAnriiMnsiUm^c^w'kkI5>hCiJndKP'仲foriHNiTcrCiiIh*□MwaiEatc-rihdlg聽(tīng)陌g*>T"Wlhha"imitaarCdrjv■ZnrWliflpFRBj|i*LWi|ll,hinM^Vwn-"日f(shuō)m—.g—z.rPimin(diH*flFwrA?iKiq?kHe-MinasfiMvire:[n^tog.M■VA)DahliaghCMdut..：第六步：導(dǎo)熱參數(shù)設(shè)置ScopeScopingMethodGeometrySelectionGeometryAllBitdiei□TnitimnTypeTemperatureByTimeDisplay-!meLa^tCalculateTimeHistory*5IdentifierResultsMinimum35.46B~CMaximumM.翟DefinitionTypeTotalHeatFluxByTirreDisplayTime國(guó)CalculateTimeHistoiyVesIdentifierIntepaiionPointResultsDisplayOptionAveragedResultsMinimum的,5州加;Maximum3519.?W/沛Temperature5?peScopingMethodGeometiySelectionGeometry30FacesDefiniitiDiniTypeConvedio-nFilmCoefficientStagnantAir-SimplifiedCaseCoefficientTypeAverageFilmTemperatureAmbientTemiperature2S.Y(ramped)EditTabuIarDataFilmCoefficientSuppressedNcQul?en險(xiǎn)Mhis?Temperature5?peScopingMethodGeometiySelectionGeometry30FacesDefiniitiDiniTypeConvedio-nFilmCoefficientStagnantAir-SimplifiedCaseCoefficientTypeAverageFilmTemperatureAmbientTemiperature2S.Y(ramped)EditTabuIarDataFilmCoefficientSuppressedNcQul?en險(xiǎn)Mhis?￥eMe■汕MMncin,k9(Ne吼對(duì)□?*■?**Cddu'??…TotalHeatFlux導(dǎo)熱過(guò)程結(jié)果顯示:國(guó)5l￡Efdr-SlilE-Mtihir?!es]FHEdibinUrinTsataH*iJ孑Aw?JI噠園區(qū):T時(shí)■干勻，國(guó)妨?.祐.弓畚敝做哦.E4查零*營(yíng)I亡I*P":ibcwVirtivig^'^rrrirav■￡日予Suring■l-|ThKkvnArnalilcBiEr"&C<wft(*n住|larTfivrAri*1j|LEnA?rt>an再札籍蝦珂財(cái)Minh**^|LmdliBiu■KECD?-drriHi恿MOiAf-rEi"pubiki'I"tmparin^i^ICcti^Kwri號(hào)Hk*■*^Ccndicnb■*"ECD?-drriHi恿MOiAf-rEi"pubiki'I"tmparin^i^ICcti^Kwri號(hào)Hk*■*^Ccndicnb■*"130TAaEdi?UduTsataH*&彳Aww3■￡苗居]jfl-??上暗，岑切也I?宣胸計(jì)$寺顆或鴦匹I供口宗.，檔P'Sho#Vink*L^WndrHrnsIIEd9?Cdaihgt#亍yf『/f，/｛亍戚=p|l4|TticiL>nArmijiijaiaLrdriTMpHHJi?A4^Wfl.<iiraiQav曾Tr^ruU.GarucionA瑛個(gè)5碩

」Jj加INUhfc^TiniiK'Iiamim踮"MN■咤fiiWG?m1n知1SSlEDdr'SlilE-Mt^arndl|aN5*SMjk^lyTEa]J比Ediirii*uduTwlaH—4寸Sw*■*豈I莒國(guó)國(guó)jfl-■'*理f月切?.E■可?尊小&漁建區(qū)）皿企壁呂口■]JT'￡>?#Viniu^L^Wr^anaIIEdgflCdaihgt'-|t|H|Thcii>riArnjuiijaiaRcwj^Ik>umw*!?!-rgT-r-Outf-vGKrntmSraj%esm&SlH^-SblsThcrmilTenpfriN^T^f3KT-F^HrwilEUnfc?■:IlWiMIsamMSs^biB5TJRI灑啜ftJLK^C<*c^rtFT??KiIedR-3l!ll口?wimF"rrtrmrtcn■SlEcdp-^lilE-■詠叩f\切『二?金■%爭(zhēng)吸蜜鴦叵）ctq堂門(mén)號(hào)口,jr'5>k#'/iniu-L辟Winn*llEd^iCdaihgt-r/fT/■*"危十KlH|ThciiiiriArnauijaia^ra/lE-.>w5uli|-?=■學(xué)|B*n*JMi'Fr-=b?TypwFgHeiLRixa5i止:州eTIein1HE游SMR<hll"r5c=c?TaMrifeodhJn?HciH?rr^crtB南IMlW)?5IW5jins.3mm瀕小g息1713^VMl1431^MO.療GKHftr?T>p梢TOfjfillJ|?Uhft:Wn，TiniiK'ImgLrioJiwTmrkilE-r)dWIhriH型WWOriyftrSW..敷而m171!.913SI.1IWLTOTALMASS=6.4890MOM.OFINERTIAMOM.OFINERTIACENTEROFMASSABOUTORIGINABOUTCENTEROFMASSXC=0.18259E-01IXX=0.3377E-01IXX=0.3377E-01YC=0.59836E-07IYY=0.2008E-01IYY=0.1792E-01ZC=0.40688E-07IZZ=0.2008E-01IZZ=0.1792E-01IXY=0.2098E-06IXY=0.2169E-06IYZ=-0.1487E-07IYZ=-0.1486E-07IZX=-0.1228E-06IZX=-0.1180E-06

***MASSSUMMARYBYELEMENTTYPE***TYPEMASS16.48899RangeofelementmaximummatrixcoefficientsinglobalcoordinatesMaximum=0.367078062atelement5369.Minimum=2.738995699E-06atelement18302.***ELEMENTMATRIXFORMULATIONTIMESTYPENUMBERENAMETOTALCPAVECP114974SOLID871.2340.00008225274SURF1520.3750.000071TimeatendofelementmatrixformulationCP=4.09375.ALLCURRENTANSYSDATAWRITTENTOFILENAME=file.rdbFORPOSSIBLERESUMEFROMTHISPOINTCRITERION=0.3355HTFLOWCONVERGENCEVALUE=335.5SPARSEMATRIXDIRECTCRITERION=0.3355TOC\o"1-5"\h\zNumberofequations=24309,Maximumwavefront=95Memoryallocatedforsolver=75.811MBMemoryrequiredforin-core=34.053MBOptimalmemoryrequiredforout-of-core=7.604MBMinimummemoryrequiredforout-of-core=6.367MB***NOTE***CP=5.141TIME=20:46:57TheSparseMatrixsolveriscurrentlyrunninginthein-corememorymode.Thismemorymodeusesthemostamountofmemoryinordertoavoidusingtheharddriveasmuchaspossible,whichmostoftenresultsinthefastestsolutiontime.Thismodeisrecommendedifenoughphysicalmemoryispresenttoaccommodateallofthesolverdata.Sparsesolvermaximumpivot=0.727934792atnode25482TEMP.Sparsesolverminimumpivot=2.431812852E-02atnode1708TEMP.Sparsesolverminimumpivotinabsolutevalue=2.431812852E-02atnode1708TEMP.EQUILITER1COMPLETED.NEWTRIANGMATRIX.MAXDOFINC=68.00HTFLOWCONVERGENCEVALUE=0.7853E-12CRITERION=0.6171E-03<<<CONVERGED>>>SOLUTIONCONVERGEDAFTEREQUILIBRIUMITERATION1***ELEMENTRESULTCALCULATIONTIMESTYPENUMBERENAMETOTALTYPENUMBERENAMETOTALCPAVECP12149745274SOLID87SURF1520.6090.2030.0000410.000039***NODALLOADCALCULATIONTIMESTYPENUMBERENAMETOTALCPAVECP114974SOLID870.0470.00000325274SURF1520.0620.000012***LOADSTEP1SUBSTEP1COMPLETED.CUMITER=1***TIME=1.00000TIMEINC=1.00000***ANSYSBINARYFILESTATISTICSBUFFERSIZEUSED=163841.500MBWRITTENONELEMENTSAVEDDATAFILE:file.esav6.688MBWRITTENONASSEMBLEDMATRIXFILE:file.full13.562MBWRITTENONRESULTSFILE:file.rth*******************************************************************FINISHEDSOLVEFORLS1*************PARAMETERDSPROGRESSDELETED.*GET_WALLASOLFROMACTIITEM=TIMEWALLVALUE=20.7830556FINISHSOLUTIONPROCESSING瞬態(tài)對(duì)于的分析:給Mi土ESyilrm-SrekoFilE.I峋FhEdiUrauTmta占T?tifA國(guó)IB固恒辛?G彩甌咬我區(qū)）4寫(xiě)號(hào)口，『獨(dú)ALdi*>LduTestal~Wn盛-J5cAm*UW皿國(guó)空甲十寫(xiě)切國(guó)也唾回尊寸。寺很耳互區(qū))供◎害，號(hào)口-jr'ShawVanki-h^'MM-ini-MCokirhg=乂*XT1*1b|TkkiwiArvKiukraSEapngM