ANSYS譜的實(shí)例板梁結(jié)構(gòu)清楚明了

譜分析的實(shí)例———板梁結(jié)構(gòu)構(gòu)一單點(diǎn)響應(yīng)譜譜分分析的算例例例某板梁結(jié)構(gòu)如圖圖圖3所示，計(jì)計(jì)算在Y方向向的地震震位移移響應(yīng)譜譜作用用下整個(gè)個(gè)結(jié)構(gòu)構(gòu)的響應(yīng)應(yīng)情況況。板梁結(jié)結(jié)構(gòu)結(jié)構(gòu)構(gòu)的基基本尺寸寸如圖圖3所示，地地震譜如如表55所示，其其它它數(shù)據(jù)如如下：：1.材料是A33鋼鋼，相關(guān)參參參數(shù)如下下：楊氏模量=2eee11NN/mm2泊松比比=0.33密密度=7.88e33Kgg/m332.板殼：厚度=2e-33mm3.梁幾何特性性如如下：截面面積=1...6e--5m2慣性矩矩=64//33e-112m4寬度==4e--3mm高度=4ee-3mm圖3板梁結(jié)構(gòu)模模型型（mm）譜表響應(yīng)譜頻率(Hz）位移(′1033m)0.51.01.00.52.40.93.80.8171.2180.75200.86320.21GUI方式式分分析過程第1步：指定分分析析標(biāo)題并設(shè)設(shè)設(shè)置分析析范疇疇1、取菜單途徑徑徑UtilliityMeenu>>Fiile>>ChhanggeTitllee。2、輸入文字“SSSingglee-pooinntressponnseeanallysiisofashellll-beeammstruuctuuree”，然后單單擊OK。第2步：定義單單元元類型1、選取菜單途途途徑MainnMenuu>Prrepproccesssorr>EElemmenntTyppe>AAddd/Edditt/Dellete，彈彈出ElemmentTTypees對(duì)對(duì)話框。2、單擊Adddd，彈出LiibraaryyofEElemmenntTyppes對(duì)話框框。3、在左邊的滾滾滾動(dòng)框中單單擊擊“StruuctuuraalSheell”。4、在右邊的滾滾滾動(dòng)框中單單擊擊“shelll63”。5、單擊Apppply。6、在右邊的滾滾滾動(dòng)框中單單擊擊“beamm4”。7、單擊OK。8、單擊EleeementtTypeess對(duì)話框中中的的Clossee按鈕。第3步：定義單單元元實(shí)常數(shù)1、選取菜單途途途徑MainnMenuu>Prrepproccesssorr>RRealCConsstaants，彈彈出ReallConsstanntss對(duì)話框。2、單擊Adddd，彈出EllemeenttTypeeforReallConssttantts對(duì)對(duì)話框。3、選擇1號(hào)單單單元，單擊擊OOK，彈出RRealCConsstaantsfforShhelll633對(duì)話框。4、在TK(II)處處輸入22e-3。單單擊OK，關(guān)關(guān)閉ReallConsstanntssforShellll63對(duì)話框框。5、重復(fù)2、過過過程。6、選擇2號(hào)單單單元，單擊擊OOK，彈出RRealCConsstaantsfforBeeam4對(duì)話話框。7、分別輸入下下下列數(shù)據(jù)：：AAREA為11.6EE-55，IZZ和和IYY均為為21.33333E--122，TKZTTKY均為44E-3。單單擊OK，關(guān)關(guān)閉ReallConsstanntssforBeamm44對(duì)話框。8、單擊Clooose，關(guān)閉閉ReallConssttantts對(duì)對(duì)話框。第4步：指定材材料料性能1、選取菜單途途途徑MainnMenuu>Prrepproccesssorr>MMateeriialPrropss>--Connsttantt-IIsottroopic，彈彈出IsottroppiccMateeriaalProppeertiiess對(duì)話框。2、指定材料號(hào)號(hào)號(hào)為1，單擊擊OK彈出第第二個(gè)對(duì)對(duì)話框框。3、輸入EX為為為2e11。4、輸入DENNNS為7.88e3。5、輸入NUXXXY為0.33。6、單擊OK。第5步：建立立有限限元模型型（過程省略。此此此時(shí)，完完成了了幾何模模型的的建立、單單元元?jiǎng)澐志W(wǎng)網(wǎng)格和和施加邊邊界條條件。）第6步：模態(tài)求求解解1、選取菜單途途途徑MainnMenuu>Sooluutioon>>-AnnallysiisTypee--NewAAnallyssis，彈出出NewAAnallyssis對(duì)話框框。2、選擇Modddal，然后后單擊OK。3、選取菜單途途途徑MainnMenuu>Sooluutioon>>AnaalyysisOOptiionns，彈出MModaalAnallyysis對(duì)話話框。4、選中Subbbspaccee模態(tài)提取取法法。5、在No.offmoodesttoexttracct處處輸入10((模態(tài)提取取數(shù)數(shù)目)。6、單擊OK，彈彈彈出SubsspacceModaallAnallysiis對(duì)對(duì)話框。單單擊擊OK接受缺缺省值。7、選取菜單途途途徑MainnMenuu>Sooluttioon>-SSolvve--CurrreentLSS。彈出SoolveCCurrrenntLoaadSteep對(duì)話框，同同同時(shí)彈出/SSTATCCommmannd窗口。8、仔細(xì)閱讀///STATTCommmaand窗口中中的信息息，然然后單擊Cllose關(guān)閉閉/STAATTCommmand窗口口。9、單擊SolllveCuurreenttLoaddStepp對(duì)話框中中的的OK，開始始求解計(jì)計(jì)算。10、當(dāng)求解結(jié)結(jié)束束時(shí)，彈出出出“Soluutioonisdoone！”對(duì)對(duì)話框，關(guān)關(guān)閉閉之。第7步獲得譜解解1、選取菜單途途途徑MainnMenuu>Sooluutioon>>-AnnallysiisTypee--NewAAnallyssis，彈出出NewAAnallyssis對(duì)話框框。同時(shí)時(shí)彈出出警告對(duì)對(duì)話框框“Channginngtheaanallyssistyypeissonlyyvaliidwitthintthefiirstlloadsstepp.PressssingOOKwilllcauuseyooutoexittandrre-eentterSOOLUTTIOON.Thhiswiillreesetlloadsstepccounntto1..”，單擊CCLOSSE關(guān)關(guān)閉警告告對(duì)話話框。2、選擇Speeectruumm，然后單單擊擊OK。3、選取菜單途途途徑MainnMenuu>Sooluttioon>AAnallyssisOpptioonss，彈出SppecttruumAnaalyssiss對(duì)話框。4、選擇缺省的的的譜分析類類型型Singglle-pptrespp((單點(diǎn)響應(yīng)應(yīng)譜譜)，輸入110為求解的的模態(tài)數(shù)數(shù)。5、單擊單元應(yīng)應(yīng)應(yīng)力計(jì)算選選擇擇按鈕，指指定定為YES。單單擊OK鍵，關(guān)關(guān)閉SpecctruumAnallyysis對(duì)話話框。6、選取菜單途途途徑MainnMenuu>Sooluttioon>--LoaadSteppOptss--Speecttrum>>-Sinnglee-PPoinnt--Setttiings。彈彈出SetttingfforSiinglle--PoiinttRespponsseSpeccttrumm(單單點(diǎn)響應(yīng)應(yīng)譜選選項(xiàng)設(shè)置)對(duì)對(duì)話框。7、選擇響應(yīng)譜譜譜類型中的的“SSeissmiicdissplaac”。8、激勵(lì)方向SSSEDX,,SSEDYY,SSED分別輸輸入0,1,,0。然后，單單單擊OK鍵。9、選取菜單途途途徑MainnMenuu>Sooluttioon>--LoaadSteppOptss--Speecttrum>>-Sinnglee-PPoinnt--FreeqTabllee，彈出FrrequuenncyTaable（頻頻率-譜值表表中）頻頻率輸輸入對(duì)話話框。10、依次輸入入00.5、11.0、2..4、3.88、17、118、20和和32給FRREQ1、FFREQQ2、………和FREEQ8，然后后單擊OKK。11、選取菜單單途途徑MaiinMennu>SSoluutiion>-LoaaddSteppOptss-Sppecctruum>-Siinglle--Poiintt-SppecctrVaaluees，彈彈出SpecctruumValuuees-DDammpinngRatiioo(譜值-阻阻尼比)對(duì)話話框。12、單擊OKK，此此時(shí)設(shè)置置為缺省省狀態(tài)態(tài)，即無無阻尼尼。同時(shí)時(shí)，彈彈出SpecctruumVValuuess對(duì)話框。13、依次輸入入對(duì)對(duì)應(yīng)上述頻頻頻率的譜譜值SSV1、SVV2……SVV8為：1..0e--3、00.5e--3、0.99e-3、00.8e--3、1.22e-3、00.75ee-3、0..86e--3和0.22e-3。單單擊OK，關(guān)關(guān)閉譜值值輸入入對(duì)話框框。14、選取菜單單途途徑MaiinMennu>SSoluutiion>--Sollvee-CuurrrentLLS。彈出SSolvveCurrreentLooadSttep對(duì)話框框，同時(shí)時(shí)彈出出/STAATTCommmand窗口口。15、仔細(xì)閱讀讀//STATTTCommmand窗口口中的信信息，然然后單擊Cllose。16、單擊SoollveCCurrrenntLoaadSteep對(duì)話框中中的OK，開開始求解解計(jì)算算。17、當(dāng)求解結(jié)結(jié)束束時(shí)，彈出出出“Soluutioonisdoone！”對(duì)對(duì)話框，關(guān)關(guān)閉閉之。第8步擴(kuò)展模態(tài)態(tài)1、選取菜單途途途徑MainnMenuu>Sooluutioon>>-AnnallysiisTypee--NewAAnallyssis，彈出出NewAAnallyssis對(duì)話框框。2、選擇Modddal，然后后單擊OK。3、選取菜單途途途徑MainnMenuu>Sooluutioon>>-AnnallysiisTypee--ExppannsioonPPass，彈彈出Expaansiionnpasss對(duì)話框，單單單擊Expaansiionnpasss按鈕，設(shè)設(shè)置置成on。單單擊OK,關(guān)關(guān)閉Expaansiionnpasss對(duì)話框。4、選取菜單途途途徑MainnMenuu>Sooluutioon>>-LooaddSteppOptss-ExxpaansiionnPasss>>-SiinggleExxpannd--ExppanndModdes，彈出出ExpaanndModdes擴(kuò)展模模態(tài)對(duì)話話框。5、在numbberroffmodeestoexpaannd處輸入擴(kuò)擴(kuò)展模態(tài)態(tài)數(shù)為為10，輸入入0.00055給signnifiicaantthhresshoold。6、單擊calllculaatteeleemenntresuullts鈕，設(shè)設(shè)置為YESS，即計(jì)算算單單元結(jié)果果。單單擊OK關(guān)閉閉ExpaanndModdes對(duì)話框框。7、選取菜單途途途徑MainnMenuu>Sooluttioon>-SSolvve--CurrreentLSS。彈出SoolveCCurrrenntLoaadSteep對(duì)話框，同同同時(shí)彈出/SSTATCCommmannd窗口。8、仔細(xì)閱讀///STATTCommmaand窗口中中的信息息，然然后單擊Cllose。9、單擊SolllveCuurreenttLoaddStepp對(duì)話框中中的的OK，開始始求解計(jì)計(jì)算。10、當(dāng)求解結(jié)結(jié)束束時(shí)，彈出出出“Soluutioonisdoone！”對(duì)對(duì)話框，關(guān)關(guān)閉閉之。第9步模態(tài)疊加加1、選取菜單途途途徑MainnMenuu>Sooluutioon>>-AnnallysiisTypee--NewAAnallyssis。NNewAnnalyysiis對(duì)話框?qū)⒊霈F(xiàn)。同同時(shí)時(shí)彈出警警告對(duì)對(duì)話框“Chhangginngtheeanallysiistypeeisonnlyvaalidwwithhinnthefirssttloaddstepp.PreessiinggOKwwillccausseyouttoexiitanddre-eenteerSOLUUTTIONN.Thisswilllreseettloaddsteppcounntto1?！?，單單擊CLOSSE，關(guān)閉警警告對(duì)話話框。2、選擇Speeectruumm，然后單單擊擊OK。3、選取菜單途途途徑MainnMenuu>Sooluttioon>AAnallyssisOpptioonss。彈出SppecttruumAnaalyssiss對(duì)話框。4、選擇缺省時(shí)時(shí)時(shí)的譜分析析類類型Singgle--pttrespp(單點(diǎn)響響應(yīng)譜)。單單擊OK鍵，關(guān)關(guān)閉SpecctruumAnallyysis對(duì)話話框。5、選取菜單途途途徑MainnMenuu>Sooluttioon>--LoaadSteppOptss--Speecttrum>>-Sinnglee-PPoinnt--ModdeCombbiine，彈出出ModeeCombbiineMeethoodss（模態(tài)疊疊加加方法）對(duì)對(duì)話話框。6、選擇SRSSSS模態(tài)疊加加方法。7、輸入0.1115給siggnifficcanttthreeshhold。8、選擇位移dddispllaacemmennt作為輸出出類型(tyypeoffoutpput)。單單擊OK，關(guān)關(guān)閉ModeeCombbineMMethhodds對(duì)話框。9、選取菜單途途途徑MainnMenuu>Sooluttioon>-SSolvve--CurrreentLSS。彈出SoolveCCurrrenntLoaadSteep對(duì)話框，同同同時(shí)彈出/SSTATCCommmannd窗口。10、仔細(xì)閱讀讀//STATTTCommmand窗口口中的信信息，然然后單擊Cllose。11、單擊SoollveCCurrrenntLoaadSteep對(duì)話框中中的OK，開開始求解解計(jì)算算。12、當(dāng)求解結(jié)結(jié)束束時(shí)，彈出出出“Soluutioonisdoone！”對(duì)對(duì)話框，關(guān)關(guān)閉閉之。第10步POSST1后后處理理：輸出出節(jié)點(diǎn)點(diǎn)、單元元和反反力解1、選擇菜單途途途徑MainnMenuu>GeeneeralPPosttprroc>>LiistReesulltss>ReesuultsSSummmarry，彈出SSET命令列列表窗。2、瀏覽SETTT命令列表表窗窗中的信信息，然然后單擊CLLOSE關(guān)閉閉SET命令令列表窗窗。3、選擇菜單途途途徑UtillityMMenuu>FFilee>RReadIInpuutfrom，彈彈出ReaddFilee對(duì)話框。4、在ReaddFFilee對(duì)話框的的右右側(cè)，從從滾動(dòng)動(dòng)框中選選擇包包含結(jié)果果文件件的路徑徑。5、在ReaddFFilee對(duì)話框的的左左側(cè)，從從滾動(dòng)動(dòng)框中選選擇JJobnnamme.mmcoom文件。單單擊OK，關(guān)關(guān)閉ReaddFilee對(duì)話框。6、選擇菜單途途途徑MainnMenuu>GeeneeralPPosttprroc>>LiistReesulltss>NoodaalSollutiionn，彈出LiistNoodalSSoluutiion（列表表顯示節(jié)節(jié)點(diǎn)結(jié)結(jié)果）對(duì)對(duì)話框框。7、接受缺省設(shè)設(shè)設(shè)置：左側(cè)側(cè)滾滾動(dòng)框中中為“DDOFsooluttioon”，右側(cè)側(cè)滾動(dòng)框框中為為“ALLDOFssDOF”。單單擊OK，關(guān)關(guān)閉ListtNodaalSollutiionn對(duì)話框，彈彈彈出PRNSSOL命令列列表窗。8、瀏覽PRNNNSOL命令令列表窗窗中的的信息，然然后后單擊CLOOSE關(guān)閉PPRNSSOLL命令列表表窗窗。9、選擇菜單途途途徑MainnMenuu>GeeneeralPPosttprroc>>LiistReesulltss>EllemmentSSoluutiion，彈出出ListtElemmeentSooluttioon（列表顯顯示單元元結(jié)果果）對(duì)話話框。10、設(shè)置：左左側(cè)側(cè)滾動(dòng)框中中中指定為“LLineEElemrresuultts”，右側(cè)側(cè)滾動(dòng)框框中指指定為“SttrucctuureELLEM”。單單擊OK，關(guān)關(guān)閉ListtElemmenSooluttioon對(duì)話框，彈彈彈出PRESSOL命令列列表窗。11、瀏覽PRREESOL命命命令列表表窗中中的信息息，然然后單擊CLLOSE關(guān)閉閉PRESSOOL命令列表表窗。12、選擇菜單單途途徑MaiinMennu>GGenneraalPosttpprocc>LListRResuultts>RReaactiionnSoluu，彈出LiistReeacttioonSollutiionn（列表顯顯示示單元結(jié)結(jié)果）對(duì)對(duì)話框。13、設(shè)置：滾滾動(dòng)動(dòng)框中指定定定為“ALLLstruuforccF”。單單擊OK，關(guān)關(guān)閉ListtReacctioonSoluuttion對(duì)話話框，彈彈出PPRRSSOLL命令列表表窗窗。14、瀏覽PRRRRSOL命命命令列表表窗中中的信息息，然然后單擊CLLOSE關(guān)閉閉PRESSOOL命令列表表窗。2批處理方式分分分析LOG文文件/BATCH/TITLE,,,Sinnglle-PPoiintReespoonsseSpeectrrummAlyssisofftheShellll-BeeammStruuctuuree/PREP7ET,1,SHELLLL63!定義義單元類類型ET,2,BEAMM44R,1,00.002!!!定義實(shí)常常數(shù)數(shù)R,2,11.6e-555,2.1133ee-111,2..1333e--11,44e-33,4e-33MP,EX,,,1,22e111,!定義義材料特特性MP,DENNNS,11,77.8ee3,,MP,NUXYYY,1,,0..3,K,1,,,,,,!開始定義義有限元元模型型K,2,,,000.6,,K,3,,,111.2,,K,4,,,111.8,,LSTR,111,2！畫畫線并劃劃分單單元網(wǎng)格格LSTR,222,3LSTR,333,4TYPE,2MAT,1REAL,2ESYS,0LESIZE,,,ALLL,,,6,,1,LMESH,AAALLLGEN,2,,,ALLL,,,,,0.55,,,0LGEN,2,,,ALLL,,,00.5,,,,,00LSEL,R,,,LOCC,XX,0..5LGEN,2,,,ALLL,,,,0..5,,,,,0LSEL,ALLLLA,2,6,1114,110??！畫面并劃劃分分單元網(wǎng)網(wǎng)格TYPE,1MAT,1REAL,1ESYS,0ALLSEL,,,BELLOWW,ARREAALSEL,U,,,LOCC,XX,0LSEL,U,,,LOCC,XX,0..5LESIZE,,,ALLL,,,,5,,1AMESH,111AGEN,2,,,1,,,,0.5AGEN,2,,,ALLL,,,,,,,0..6ASEL,R,,,LOCC,ZZ,1..2AGEN,2,,,ALLL,,,,,,,0..6ALLSEL,,,ALLLNUMMRG,,,ALLL,,,,！合并節(jié)點(diǎn)點(diǎn)等操作作NUMCMP,,,ALL！壓壓縮節(jié)點(diǎn)點(diǎn)號(hào)等等編號(hào)NSEL,R,,,LOCC,ZZ,0！選擇擇添加邊邊界條條件的節(jié)節(jié)點(diǎn)D,ALL,,,,,,,,,ALLL!!添加邊界界條條件ALLSEL,,,ALLL/VIEW,,,,-1..2,,-1,,1EPLOTFINISH/SOLUANTYPE,,,MODDALL！模態(tài)分析析MODOPT,,,SUBBSPP,10！子子空間模模態(tài)提提取法，提取10階模態(tài)態(tài)SOLVEFINISH/SOLUANTYPE,,,SPEECTTR！譜分析析SPOPT,SSSPRSS,110,YYESS！單點(diǎn)響應(yīng)應(yīng)譜,100階模態(tài)態(tài)參與計(jì)計(jì)算,,計(jì)算單元元應(yīng)應(yīng)力SVTYP,333！位移譜譜SED,,1！??！譜的激激勵(lì)方方向?yàn)榭偪傮w坐坐標(biāo)的Y軸FREQ,0...5,11.00,2..4,,3.88,117,118,,20,,322！用于SVV－頻率表表的的頻率SV,1,0...2e--3,,0.9ee-3,,0..8e-33,1..2e-3,,00.75ee-3,,0..86e--3,00.22e-3！與頻率點(diǎn)相聯(lián)聯(lián)聯(lián)系的譜譜值SOLVEFINISH/SOLUTIIIONANTYPE,,,MODDALL！模態(tài)分分析析EXPASS,,,ON！打開開模態(tài)擴(kuò)擴(kuò)展開開關(guān)MXPAND,,,10,,,,,YESS,00.0005?。≈付〝U(kuò)擴(kuò)展模模態(tài)數(shù)、計(jì)計(jì)算算單元結(jié)結(jié)果和和Signniif=00.0005SOLVEFINISH/SOLUTIIIONANTYPE,,,SPEECTTR！譜分析析SRSS,0...15,,DIISP！合并并模態(tài)平平方和和的方根根SOLVEFINISH/POST1?。?！進(jìn)入后后處理理器SET,LISSST！顯示計(jì)計(jì)算結(jié)果果摘要要/INPUT,,,,mccomm！讀入Joobnaamee.mccomm文件PRNSOL,,,DOF！顯顯示節(jié)點(diǎn)點(diǎn)位移移結(jié)果PRESOL,,,ELEEM??！按單元元格式式顯示單單元結(jié)結(jié)果PRRSOL,,,F！顯示反反力結(jié)果果FINISH二多點(diǎn)響應(yīng)譜譜分分析的算例例例下面是多點(diǎn)地震震震譜激勵(lì)勵(lì)下?lián)Q換熱器的的抗震震分析LOGG文件：FINISH/CLEAR/FILNAMMM,exxchhanggerr/TITLE,,,Mulltii-pooinntSpeectrrummAnallysiisofthheexcchanngeergra=9.8881/PREP7ET,1,BEEEAM4！定定義單元元類型型和實(shí)常常數(shù)R,1,0.0001877,33.9445ee-5,,3..9455e--5,00.225,00.225R,2,4.33396ee-33,1..08825ee-55,1..08825ee-55,0..155,0..155R,3,2.4444e--3,,5.551ee-6,,5..51ee-66,0..1446,00.1146R,4,2.2221377e--3,88.881e--5,,8.881ee-5,,0..1466,00.1446R,5,6.66657ee-44,2..355e-77,22.355e--7,00.0057,,0..0577MP,EX,111,2ee111！定義材材料料特性MP,DENSSS,1,,1116033MP,EX,222,2ee111MP,DENNNS,22,1179113MP,EX,333,2ee111MP,DENSSS,3,,93375MP,EX,444,2ee111MP,DENSSS,4,,79957MP,EX,555,2ee111MP,DENSSS,5,,79900MP,EX,666,2ee133MP,DENSSS,5,,79900N,1,0,000,0！定義有限限元模模型N,2,0,000,-00.225N,3,0,000,-00.55N,4,0,000,-00.773N,5,0,000,-00.777N,6,0,000,-00.8808N,16,0,,,0,--6..4088FILL,6,,,16N,13,0,,,0,--4..5N,18,0,,,0,--6..9088FILL,1666,188N,19,0,,,0,--7..0588N,25,0...8,00,--7.00588N,26,0...8,00,--7N,46,0...8,00,00FILL,2666,466N,44,0...8,00,--0.55N,33,0...8,00,--4.55N,50,0...4,00,--7.00588N,22,0...4,00,--7.44588CS,11,111,500,119,222CSYS,1111FILL,1999,222FILL,2222,255TYPE,1REAL,1MAT,1E,1,2E,2,3E,3,4REAL,2MAT,2E,4,5E,5,6REAL,3MAT,3E,6,7EGEN,1000,1,,6REAL,4MAT,4E,16,1777E,17,1888REAL,5MAT,5E,18,1999EGEN,2888,1,,188CSYS,0N,51,-000.1225,,,-00.55N,54,0...82335,,,-00.55N,52,-000.0773,,,-44.55N,53,0...82335,,,-44.55REAL,5MAT,6E,3,51E,13,5222E,33,5333E,44,5444D,51,UXXX,0,,,,,,UYY,UUZ！定義邊邊界條件件D,52,UXXX,0,,,553,11,UUYD,54,UXXX,0,,,,,,UYYSAVEFINISH/SOLU！模模模態(tài)分析析ANTYPE,,,MODDALLMODOPT,,,LANNB,,10MXPAND,,,10,,,,,1SOLVEFINISH/SOLUANTYPE,,,SPEECTTR！譜分析析SPOPT,MMMPRSS,110,OON!***4...6mpoosittioon：firrstPSSD**********************PSDFRQPSDUNITTT,1,,ACCEL,,grraPSDFRQ,,,1,,,0..0855,00.199733,2..81164,,4..88775,,6.661225,77.664611,110.880557PSDVAL,,,1,00.000477,00.033222,0..72253,,1..34778,,1.334778,11.2223,,.663722PSDFRQ,,,1,,,111.9,,166.1,,177.833733,200.77,577.55PSDVAL,,,1,00.770822,00.700822,0..66613,,0..39668,,0.330113DMPRAT,,,0.004PSDRES,,,DISSP,,RELLD,51,UXXX,1D,54,UXXX,1PFACT,111,BAASEED,51,UXXX,0D,54,UXXX,0!***0.666mpoosiitioon：：secoonndPSSD***********************PSDUNITTT,2,,ACCEL,,grraPSDFRQ,,,2,,,0..0855,00.1999,,2.88766,4..88875,,6..61225,,7.446448,88.5526PSDVAL,,,2,00.000477,00.033288,0..70078,,1..05553,,1.005553,00.995677,..6244PSDFRQ,,,2,,,177.099444,311.005PSDVAL,,,2,00.550533,00.244499DMPRAT,,,0.004PSDRES,,,DISSP,,RELLD,52,UXXX,1D,53,UXXX,1PFACT,222,BAASEEPSDRES,,,DISSP,,RELLSOVEFINISH/SOLUANTYPE,,,SPEECTTRSRSS,0...0011,DDISPP!模態(tài)態(tài)合并SOLVESAVEFINISH/POST1?。?！后處理/INPUT,,,excchaangeer,,mcoomETABLE,,,SDIIRII,LSS,11ETABLE,,,SBYYTII,LSS,22ETABLE,,,MFOORXXI,SSMIISC,,1ETABLE,,,MFOORYYI,SSMIISC,,2ETABLE,,,MFOORZZI,SSMIISC,,3ETABLE,,,MOMMXII,SMMISSC,44ETABLE,,,MOMMYII,SMMISSC,55ETABLE,,,MOMMZII,SMMISSC,66三隨機(jī)振動(dòng)和和隨隨機(jī)疲勞分分分析算例分析§4.7..11中的梁板板結(jié)構(gòu)在在基礎(chǔ)礎(chǔ)位移激激勵(lì)譜譜（如右右表所所示）作作用下下結(jié)構(gòu)的的響應(yīng)應(yīng)情況。譜表激勵(lì)譜頻率(Hz）位移(′1033mm)0.50.011.00.022.40.033.80.02170.005180.01200.015320.011GUI方式式式分析過過程第1步：指定分分析析標(biāo)題并設(shè)設(shè)設(shè)置分析析范疇疇1.選取菜單途途徑徑UtillityMMenuu>FFilee>CChanngeeTitlle。2.輸入文字“PSSDAnallysissoftheShelll-BeeamStruucturre”，然后單單擊OK。第2步：定義單單元元類型（省略，同單點(diǎn)點(diǎn)點(diǎn)響應(yīng)譜譜過程程。）第3步：定義單單元元實(shí)常數(shù)（省略，同單點(diǎn)點(diǎn)點(diǎn)響應(yīng)譜譜過程程。）第4步：指定材材料料性能（省略，同單點(diǎn)點(diǎn)點(diǎn)響應(yīng)譜譜過程程。）第5步：建立有有限限元模型（省略，同單點(diǎn)點(diǎn)點(diǎn)響應(yīng)譜譜過程程。）第6步：模態(tài)求求解解1.選取菜單途途徑徑MainnMenuu>Sooluutioon>>-AnnallysiisTypee--NewAAnallyssis，彈出出NewAAnallyssis對(duì)話框框。2.選擇Moddal，然然后后單擊OK。3.選取菜單途途徑徑MainnMenuu>Sooluutioon>>AnaalyysisOOptiionns，彈出MModaalAnallyysis對(duì)話話框。4.選中BloockLaanczzoss模態(tài)提取取法法。5.在No.offmoodesttoexttracct處處輸入10。6.單擊OK，彈出BlocckLancczosMethhod對(duì)話框，在在EndFreqquenccy域輸入100，單擊OK。7.選取菜單途途徑徑MainnMenuu>Sooluttioon>-SSolvve--CurrreentLSS。彈出SoolveCCurrrenntLoaadSteep對(duì)話框，同同同時(shí)彈出/SSTATCCommmannd窗口。8.仔細(xì)閱讀//SSTATCommmaand窗口中中的信息息，然然后單擊Cllose關(guān)閉閉/STAATTCommmand窗口口。9.單擊SollveCuurreenttLoaddStepp對(duì)話框中中的的OK，開始始求解計(jì)計(jì)算。10.當(dāng)求解結(jié)結(jié)結(jié)束時(shí)，彈彈出出“Soluutioonisdoone！”對(duì)對(duì)話框，關(guān)關(guān)閉閉之。第7步擴(kuò)展模態(tài)態(tài)1.選取菜單途途徑徑MainnMenuu>Sooluutioon>>-LooaddSteppOptss-ExxpaansiionnPasss>>-SiinggleExxpannd--ExppanndModdes，彈出出ExpaanndModdes擴(kuò)展模模態(tài)對(duì)話話框。2.在No.offmoodesttoexppand處輸輸入擴(kuò)展展模態(tài)態(tài)數(shù)為10，輸輸入0.0005給siggnifficcanttthreeshhold。3.單擊callcullatteeleemenntresuullts鈕，設(shè)設(shè)置為YESS，即計(jì)算算單單元結(jié)果果。單單擊OK關(guān)閉閉ExpaanndModdes對(duì)話框框。4.選取菜單途途徑徑MainnMenuu>Sooluttioon>-SSolvve--CurrreentLSS。彈出SoolveCCurrrenntLoaadSteep對(duì)話框，同同同時(shí)彈出/SSTATCCommmannd窗口。5.仔細(xì)閱讀//SSTATCommmaand窗口中中的信息息，然然后單擊Cllose。6.單擊SollveCuurreenttLoaddStepp對(duì)話框中中的的OK，開始始求解計(jì)計(jì)算。7.當(dāng)求解結(jié)束束時(shí)時(shí)，彈出“SSoluutiionissdonee！”對(duì)話框框，關(guān)閉閉之。第8步獲得譜解解1.選取菜單途途徑徑MainnMenuu>Sooluutioon>>-AnnallysiisTypee--NewAAnallyssis，彈出出NewAAnallyssis對(duì)話框框。同時(shí)時(shí)，彈彈出警告告對(duì)話話框“Chaangiinggtheanallyysisttypeiisonllyvallidwiithiintheffirsstloaddstepp..PresssinngOKwiillcaauseyyoutooexittandre-eennterSSOLUUTIION.TThiswwillrreseetloaddsteppcounnttto11.”，單擊擊CLOSSEE關(guān)閉警告告對(duì)對(duì)話框。2.選擇Speectrrumm，然后單單擊擊OK。3.選取菜單途途徑徑MainnMenuu>Sooluttioon>AAnallyssisOpptioonss，彈出SppecttruumAnaalyssiss對(duì)話框。4.選擇譜TyyppeoffRespponsseSpct（分分析類型型）為為PSD，在在NO.OOfmoddesfoorSollu.處輸入入10。5.單擊單元應(yīng)應(yīng)力力計(jì)算選擇擇擇按鈕，指指定定為YES。單單擊OK鍵，關(guān)閉SpecctrummAnallysiss對(duì)話框。6.選取菜單單單途徑MaiinMennu>SSoluutiion>-LoaaddSteppOptss-Sppecctruum>-PSSD-SSetttinngss。彈出SeettiinggforPSDAAnallyssis對(duì)話框框。7.選擇TyyypeoffrespponsseSpctt為為“dispplaccemment”,,單擊OK。8.選取菜單途途徑徑MainnMenuu>Sooluttioon>--LoaadSteppOptss--Speecttrum>>-PSDD-PSSDVSFrreq，彈出出TablleeforPSDvvsFreequeenccy對(duì)話框。接接接受缺省省值，單擊擊OK，關(guān)閉TablleforPSDvsFreqquenccy對(duì)話框，同同時(shí)彈出PSDvsFreqquenccy對(duì)話框。9.FREQ111、FREQQ2…FREEQ8依次輸輸入0.500、1.0、22.4、3..8、17、118、20和和32，PSSD1、PSSD2…PSSD8對(duì)應(yīng)上上述頻率率依次次輸入：0..01ee-33、0.022e-3、00.0116ee-3、0..02ee-33、0.0005e--3、0.011e-3、0.0115e-33和0.011e-3。單擊OK，關(guān)閉PSDvsFreqquenccy對(duì)話框。10.選取菜單單單途徑MaiinMennu>SSoluutiion>AApplly>>Speecttrumm>--BassePSDEExciit--OnNoodes，彈彈出AppllyBassePSDD拾取窗口口。11.在圖形窗窗窗口中拾拾取節(jié)節(jié)點(diǎn)1、200、39、558、77和和96，單擊擊OK，彈出出AppllyyBaseePSD對(duì)對(duì)話框。12.在Excccitaatiiondiirecctiion滾動(dòng)窗窗口中選選擇NNodaalY，單擊OOK。13.選取菜單單單途徑MaiinMennu>SSoluutiion>-LoaaddSteppOptss-Sppecctruum>-PSSD-CCallcullattePF，彈彈出CalcculaateePartticiipaatioonFacttoors對(duì)話框框，接受受缺省省值，單單擊OOK。14.選取菜單單單途徑MaiinMennu>SSoluutiion>-LoaaddSteppOptss-Sppecctruum>CallccConttrolls，彈彈出PSDCalccuulattioonconntrool對(duì)對(duì)話框，三三個(gè)個(gè)滾動(dòng)窗窗均指指定為Abssoluutee。單擊OKK。15.選取菜單單單途徑MaiinMennu>SSoluutiion>--Sollvee-CuurrrentLLS。彈出SSolvveCurrreentLooadSttep對(duì)話框框，同時(shí)時(shí)彈出出/STAATTCommmand窗口口。16.仔細(xì)閱讀讀讀/STAATTCommmand窗口口中的信信息，然然后單擊Cllose。17.單擊SooolveCCurrrenntLoaadSteep對(duì)話框中中的OK，開開始求解解計(jì)算算。18.當(dāng)求解結(jié)結(jié)結(jié)束時(shí)，彈彈出出“Soluutioonisdoone！”對(duì)對(duì)話框，關(guān)關(guān)閉閉之。第9步模態(tài)疊加加1.選取菜單途途徑徑MainnMenuu>Sooluutioon>>-AnnallysiisTypee--NewAAnallyssis。NNewAnnalyysiis對(duì)話框?qū)⒊霈F(xiàn)。同同時(shí)時(shí)彈出警警告對(duì)對(duì)話框“Chhangginngtheeanallysiistypeeisonnlyvaalidwwithhinnthefirssttloaddstepp.PreessiinggOKwwillccausseyouttoexiitanddre-eenteerSOLUUTTIONN.Thisswilllreseettloaddsteppcounntto1?！?，單單擊CLOSSE，關(guān)閉警警告對(duì)話話框。2.選擇Speectrrumm，然后單單擊擊OK。3.選取菜單途途徑徑MainnMenuu>Sooluttioon>-LLoadSStepOOptss-SSpecctrrum>-PSDD--ModdeCombbiin，彈出SSpecctrrumAnnalyysiis對(duì)話框。4.在signnifficaantthhresshoold處輸入入0.00055，在Commbinneddmodee處輸入100。單擊OKK。5.選取菜單途途徑徑MainnMenuu>Sooluttioon>-SSolvve--CurrreentLSS。彈出SoolveCCurrrenntLoaadSteep對(duì)話框，同同同時(shí)彈出/SSTATCCommmannd窗口。6.仔細(xì)閱讀//SSTATCommmaand窗口中中的信息息，然然后單擊Cllose。7.單擊SollveCuurreenttLoaddStepp對(duì)話框中中的的OK，開始始求解計(jì)計(jì)算。8.當(dāng)求解結(jié)束束時(shí)時(shí)，彈出“SSoluutiionissdonee！”對(duì)話框框，關(guān)閉閉之。第10步POSST1后后處理理器：輸輸出節(jié)節(jié)點(diǎn)結(jié)果果、單單元結(jié)果果和約約束反力力1.選擇菜單途途徑徑MainnMenuu>GeeneeralPPosttprroc>>-RReadRResuultts-FFirrstSeet，讀入第第一載荷荷步數(shù)數(shù)據(jù)（用用戶可可以根據(jù)據(jù)需要要讀入感感興趣趣的載荷荷步）。2.選擇菜單途途徑徑MainnMenuu>GeeneeralPPosttprroc>>LiistReesulltss>ReesuultsSSummmarry，彈出SSET命令列列表窗。3.瀏覽SETT命令列列表窗窗中的信信息，然然后單擊CLLOSE關(guān)閉閉SET命令令列表窗窗。4.選擇菜單途途徑徑MainnMenuu>GeeneeralPPosttprroc>>LiistReesulltss>NoodaalSollutiionn，彈出LiistNoodalSSoluutiion（列表表顯示節(jié)節(jié)點(diǎn)結(jié)結(jié)果）對(duì)對(duì)話框框。5.接受缺省設(shè)設(shè)置置：左側(cè)滾滾滾動(dòng)框中中為“DDOFsooluttioon”，右側(cè)側(cè)滾動(dòng)框框中為為“ALLDOFssDOF”。單擊OK，關(guān)閉ListNodaalSoluutionn對(duì)話框，彈彈出PRNSSOL命令列表表窗。6.瀏覽PRNNSOLL命令令列表窗窗中的的信息，然然后后單擊CLOOSE關(guān)閉PPRNSSOLL命令列表表窗窗。7.選擇菜單途途徑徑MainnMenuu>GeeneeralPPosttprroc>>LiistReesulltss>EllemmentSSoluutiion，彈出出ListtElemmeentSooluttioon（列表顯顯示單元元結(jié)果果）對(duì)話話框。8.設(shè)置：左側(cè)側(cè)滾滾動(dòng)框中指指指定為“LiineEllemreesulltss”，右側(cè)滾滾動(dòng)框中中指定定為“StrructturreELEEM”。單擊擊OK，關(guān)閉閉ListtElemmeenSollutiionn對(duì)話框，彈彈彈出PRESSOL命令列列表窗。9.瀏覽PREESOLL命令令列表窗窗中的的信息，然然后后單擊CLOOSE關(guān)閉PPRESSOLL命令列表表窗窗。10.選擇菜單單單途徑MaiinMennu>GGenneraalPosttpprocc>LListRResuultts>RReaactiionnSoluu，彈出LiistReeacttioonSollutiionn（列表顯顯示示單元結(jié)結(jié)果）對(duì)對(duì)話框。11.設(shè)置：滾滾滾動(dòng)框中中指定定為“ALLLstruuforccF”。單單擊OK，關(guān)關(guān)閉ListtReacctioonSoluuttion對(duì)話話框，彈彈出PPRRSSOLL命令列表表窗窗。12.瀏覽PRRRRSOOL命命令列表表窗中中的信息息，然然后單擊CLLOSE關(guān)閉閉PRESSOOL命令列表表窗。第11步POSST266后處處理器中中計(jì)算算PSD響應(yīng)應(yīng)1.選擇菜單途途徑徑MainnMenuu>TiimeeHisstPosttppro>>SttoreDData，彈彈出StorreDattafroomtheeResuultsFFile對(duì)話話框，給Reesolluttionooffreeq.veectoor處處輸入1，單單擊OK。2.選擇菜單途途徑徑MainnMenuu>TiimeeHisstPosttppro>>DeefinneVariiaablees，彈彈出DefiineTiime--HiistooryyVariiablless對(duì)話框。單單單擊Add，彈出AddTimee-HisstoryyVariiablee對(duì)話框。3.選擇NoddalDOOFressult，然然后單擊OKK，彈出DeefinneNodaallDataa拾取對(duì)話話框框。4.拾取節(jié)點(diǎn)22445，單擊擊OK，彈出出DefiinneNoddalDaata定義對(duì)對(duì)話框。5.指定Reff.NNummberoofvarriabblee為2，Noodalnnumbberr為245，UUserr-sspecciffiedllabeel為為UY24455，Dataaitemm依次選擇擇DDOFSooluttioon>TTraansllattionUUY，單擊OOK，關(guān)閉DDefiineeNodaalDatta對(duì)話框。6.單擊Cloose，關(guān)關(guān)閉閉DefiinneTimme-HHisstorryVariiaablees對(duì)對(duì)話框。7.選擇菜單途途徑徑MainnMenuu>TiimeeHisstPosttppro>>CaalcReespPSSD，彈出CCalccullateRRespponnsePSSD對(duì)話框，在在在Refeerrenccenumbbeerofreullttingvvariiabbles輸入入3，在Reeferrenncenoo.ofvariiaableestobeeoperrateed處處輸入2和空空值，TyppeofResppoonsePPSD選擇DDispplaacemmennt，單擊OOK。8.選擇菜單途途徑徑MainnMenuu>TiimeeHisstPosttppro>>CaalcReespPSSD，彈出CCalccullateRRespponnsePSSD對(duì)話框，在在在Refeerrenccenumbbeerofreullttingvvariiabbles輸入入4，在Reeferrenncenoo.ofvariiaableestobeeoperrateed處處輸入2和空空值，TyppeofResppoonsePPSD選擇VVeloociity，單擊擊OK。9.選擇菜單途途徑徑MainnMenuu>TiimeeHisstPosttppro>>CaalcReespPSSD，彈出CCalccullateRRespponnsePSSD對(duì)話框，在在在Refeerrenccenumbbeerofreullttingvvariiabbles輸入入5，在Reeferrenncenoo.ofvariiaableestobeeoperrateed處處輸入2和空空值，TyppeofResppoonsePPSD選擇AAcceeleerattioon，單擊OOK。10.選擇菜單單單途徑MaiinMennu>TTimmeHiisttPosttproo>SSetttinngs>>Grraph，彈彈出GrapphSetttinngss對(duì)話框。在在在PLTIIMME命令的MMaxiimuumTimme域輸入44，單擊OKK。11.選擇菜單單單途徑UtiilittyMenuu>>PlootCCtrlls>>Styylee>Grrapphs>>MoodiffyAxes，彈彈出AxessModiificcattionnsforGGrapphPlottss對(duì)話框，在在在X-axxiislabbel域輸入入Freqquuenccy，在Y-axxislabeel域輸入Dispplaceementt-Y，單擊OK。12.選擇菜單單單途徑MaiinMennu>TTimmeHiisttPosttproo>GGrapphVariiaablees，彈彈出GrapphTimme-HHisstorryVariiaablees對(duì)對(duì)話框。在在11stvaariaablletograpphh處輸入3，單擊OK，繪出響響應(yīng)位移響響應(yīng)曲線（如如圖4）。13.選擇菜單單單途徑UtiilittyMenuu>>PlootCCtrlls>>Styylee>Grrapphs>>MoodiffyAxes，彈彈出AxessModiificcattionnsforGGrapphPlottss對(duì)話框，將將將Y-axxiislabbel域修改改為Veloocitty--Y，單擊OOK。14.選擇菜單單單途徑MaiinMennu>TTimmeHiisttPosttproo>GGrapphVariiaablees，彈彈出GrapphTimme-HHisstorryVariiaablees對(duì)對(duì)話框。在在11stvaariaablletograpphh處輸入4，單擊OK，繪出速速度響應(yīng)曲曲線（如圖圖5）。15.選擇菜單單單途徑UtiilittyMenuu>>PlootCCtrlls>>Styylee>Grrapphs>>MoodiffyAxes，彈彈出AxessModiificcattionnsforGGrapphPlottss對(duì)話框，將將將Y-axxiislabbel域修改改為Acceelerrattionn-YY，單擊OKK。16.選擇菜單單單途徑MaiinMennu>TTimmeHiisttPosttproo>GGrapphVariiaablees，彈彈出GrapphTimme-HHisstorryVariiaablees對(duì)對(duì)話框。在在11stvaariaablletograpphh處輸入5，單擊OK，繪出加加速度響應(yīng)應(yīng)曲線（如如圖6）。圖4節(jié)點(diǎn)2455在Y方方向上上的位移移響應(yīng)應(yīng)譜曲線線圖4節(jié)點(diǎn)2455在Y方方向上上的速度度響應(yīng)應(yīng)譜曲線線圖4節(jié)點(diǎn)2455在Y方方向上上的加速速度響響應(yīng)譜曲曲線第12步POSST266后處處理器中中計(jì)算算協(xié)方差差1.選擇菜單途途徑徑MainnMenuu>TiimeeHisstPosttppro>>ReesetPPosttprroc，單擊擊OK。2.選擇菜單途途徑徑MainnMenuu>TiimeeHisstPosttppro>>DeefinneVariiaablees，彈彈出DefiineTiime--HiistooryyVariiablless對(duì)話框。單單單擊Add，彈出AddTimee-HisstoryyVariiablee對(duì)話框。3.選擇NoddalDOOFressult，然然后單擊OKK，彈出DeefinneNodaallDataa對(duì)話框。4.指定Reff.NNummberoofvarriabblee為2，Noodalnnumbberr為245，UUserr-sspecciffiedllabeel為為UY24455，在Dattaiteem的右邊窗窗口選擇TrransslaatioonUY。單擊擊OK，關(guān)閉閉DefiinneNoddalDaata對(duì)話框框。5.單擊Addd，彈出出AdddTimme-HHisstorryVariiaable對(duì)話話框。6.指定Reff.NNummberoofvarriabblee為3，Noodalnnumbberr為240，UUserr-sspecciffiedllabeel為為UY24400，在Dattaiteem的右邊窗窗口選擇TrransslaatioonUY。單擊擊OK，關(guān)閉閉DefiinneNoddalDaata對(duì)話框框。7.單擊Cloose，關(guān)關(guān)閉閉DefiinneTimme-HHisstorryVariiaablees對(duì)對(duì)話框。8.選擇菜單途途徑徑MainnMenuu>TiimeeHisstPosttppro>>CaalcCoovarriaance，彈彈出CalcculaateeCovaariaancce對(duì)話框，給給給Refeerrenccenumbbeerofreullttingvvariiabbles輸入入4，給Reef.noo.ofvariiaableestobeeoperrateedon分別輸輸入2和3。9.單擊OK，協(xié)方差值計(jì)算算結(jié)果輸出出到Outpputwinddow窗口中。2批處理方式LLLOG文件/BATCH/TITLE,,,PSDAnallyysisooftheeShelll-BBeaamStrructturre/PREP7ET,1,SHELLLL63!定義義單元類類型ET,2,BEAMM44R,1,0..0002,0.00022,0.0002,00.0002,,,,??！定義單單元實(shí)實(shí)常數(shù)R,2,1.666e-55,2.1133ee-111,22.1333ee11,,4ee-3,,4e-33MP,EX,111,2ee111,！定義材料料特性性MP,DENSSS,1,,7..8e33MP,NUXYYY,1,,0..3K,1,,,,,,！定義有限限元模模型K,2,,,000.6,,K,3,,,111.2,,K,4,,,111.8,,!*LSTR,1,,,2LSTR,2,,,3LSTR,333,4TYPE,2MAT,1REAL,2ESYS,0LESIZE,,,ALLL,,,6,,1,LMESH,AAALLLGEN,2,,,ALLL,,,,,0.55,,,0LGEN,2,,,ALLL,,,0..5,,,,0LSEL,R,,,LOCC,XX,0..5LGEN,2,,,ALLL,,,00.5,,,,,0LSEL,ALLLL!*A,2,6,1114,110TYPE,1MAT,1REAL,1ESYS,0ALLSEL,,,BELLOWW,ARREAALSEL,U,,,LOCC,XX,0LSEL,U,,,LOCC,XX,0..5LESIZE,,,ALLL,,,,5,,1ALLSEL,