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Vi s ua l Eng i ne e r i ngSe r i e s
Whati sME’ scopeVES? TheME’ s c opeVESVi sualEngi neer i ngSer i es ofs of t war epac k agesandopt i onsmak esi t eas i erf ory out oobs er v eandanal y z enoi s e& v i br at i onpr obl emsi nmac hi ner yands t r uc t ur es us i ngei t herex per i ment al oranal y t i c al dat a. Wi t hME’ s c ope,y ouc ani mpor tordi r ec t l yac qui r emul t i c hannel t i meorf r equenc ydat af r om amac hi neors t r uc t ur e,andpos t pr oc es si t . Us i ngi t si ndus t r y l eadi ng3Dani mat eds hape di s pl ay ,y ouc anobs er v eor der r el at edoper at i ngdef l ec t i ons hapesf r om r unni ngmac hi ner y , r es onantv i br at i onandmodes hapesf r om r eal s t r uc t ur es ,ac ous t i cs hapes ,andengi neer i ng s hapesdi r ec t l yf r om ac qui r eddat a. I naddi t i ont oi t sphot or eal i s t i ci nt er ac t i v eani mat eddi s pl ay ,ME’ s c opeVESc ont ai nsst at eof t hear tt ool sf orper f or mi ng: FRFBas edModal Anal y s i s Oper at i onal Modal Anal y s i s Vi br oAc ous t i cAnal y s i s Dy nami c sModel i ng&Si mul at i on St r uc t ur al Dy nami c sModi f i c at i on Ex per i ment al FEA
Vi s ua l Eng i ne ODSAni mat i on AnOper at i ngDef l ec t i onShape( ODS)i st hes i mpl es twayt os eehowamac hi neors t r uc t ur emov es dur i ngi t soper at i on,ei t heratas pec i f i cf r equenc y ormomenti nt i me.AnODSc ont ai nst heov er al l dy nami cr es pons eofas t r uc t ur eduet of or c ed andr es onantv i br at i on. Ti mebas edODSani mat i ons weepsac ur s or t hr oughas etoft i mehi s t or i esdes c r i bi ngmot i ons atmul t i pl epoi nt sanddi r ec t i onsonat es tar t i c l e. Youc ans t opt heani mat i on,bac ki tup,andpl ay i tf or war dt oobs er v ei ns l owmot i onphenomena t hatmayhav et ak enpl ac ev er yqui c k l yi nr eal t i me. Wi t hf r equenc y bas edODSani mat i on,y ous i mpl y mov et hec ur s ort oaf r equenc yofi nt er es ti ny our dat a,andt heODSf ort hatf r equenc yi sdi s pl ay ed. Wi t ht hi sani mat i on,y ouc anobs er v er es onant v i br at i onaswel l asor der r el at edandot hert y pes off or c edv i br at i on.
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i ne e r i ngSe r i e s FRFBasedModalAnal ysi s
Oper at i onalModalAnal ysi s
Modal anal y s i si sus edt oc har ac t er i z er es onant v i br at i oni nmec hani c al s t r uc t ur es .Eac h r es onanc ehasas pec i f i c“ nat ur al ”ormodal f r equenc y ,amodal dampi ngordec ayv al ue, andamodes hape.FRFBas edpar amet er es t i mat i on( orc ur v ef i t t i ng)i sus edt oes t i mat e t hemodal par amet er sofas t r uc t ur ef r om as et ofFRFs .
Whent heex c i t at i onf or c esc aus i ngas t r uc t ur e t ov i br at ear enotmeas ur ed,t henFRFsc annot bec al c ul at ed,andmodal par amet er sc anonl y beex t r ac t edf orout put onl yoroper at i onal meas ur ement s .Nev er t hel es s ,ak eyadv ant age M i ofOMA st hatdat ac anbeac qui r edunderr eal wor l doper at i ngc ondi t i ons .
Att hehear toft heBas i cModal Anal y s i sopt i on i st heME’ s c opePol y nomi al met hod,aneas yt o us eMDOFc ur v ef i t t er .Thi sc ur v ef i t t erc anbe us edt os i mul t aneous l yex t r ac tpar amet er sf or mul t i pl emodes ,es pec i al l yi nc as esofhi gh modal dens i t y .I tc anal s oex t r ac tl oc al modes wher et her es onantv i br at i oni sc onf i nedt oa l oc al r egi onoft hes t r uc t ur e. TheMul t i Ref er enc eModal Anal y s i sopt i on c ont ai nsal l oft hef eat ur esoft heBas i cModal Anal y s i sopt i on,pl usaddi t i onal met hodsf orc ur v e f i t t i ngamul t i pl er ef er enc es etofFRFs .Mul t i Ref er enc ec ur v ef i t t i ngi sus edt oex t r ac tc l os el y c oupl edmodesandr epeat edr oot s( t woormor e modesatt hes amef r equenc y ) .Thi sopt i on c ont ai nsaSt abi l i t ydi agr am f orl oc at i ngs t abl e pol ees t i mat es ,andt hr eeaddi t i onal c ur v ef i t t i ng met hods :Compl exEx ponent i al ,ZPol y nomi al , andt hepat ent edAFPol y nomi al met hod.
Thi sopt i onc ont ai nss pec i al t ool sf orc ur v ef i t t i ng meas ur ement sobt ai nedf r om out put onl yor oper at i ngdat a.CommonOMAmeas ur ement s ar eaCr os ss pec t r um orODSFRF ,whi c har e c al c ul at edbet weenar ov i ngac c el er omet eranda r ef er enc e( f i x ed)ac c el er omet er .Af t eras etof t hes ehasbeens pec i al l ywi ndowed,t heyc anbe c ur v ef i tus i ngFRFbas edc ur v ef i t t i ngmet hods t oobt ai noper at i ngmodes hapes .
Vi s ua l Eng i ne Vi br oAcoust i cAnal ysi s
Dynami csModel i ng&Si mul at i on
Thi sopt i onpos t pr oc es s esanddi s pl ay sAc ous t i c I nt ens i t y ,SoundPr es s ur eLev el ( SPL) ,andSound Power .I tal l owsy out oanal y z ev i br oac ous t i c pr obl emsbydi s pl ay i ngbot hv i br at i onandac ous t i c dat at oget heri nt hes ameani mat edpi c t ur e.
Thi sopt i onus esaMul t i pl eI nputMul t i pl eOut put ( MI MO)dy nami c smodel t oc al c ul at eI nput s ,Out put s , andTr ans f erf unc t i ons .Eac hpar toft hemodel c an bec al c ul at edf r om t heot hert wo.
Ac ous t i cI nt ens i t yi smeas ur edwi t hat wot of our c hannel ac qui s i t i onpr obeandamul t i c hannel ac qui s i t i ons y s t em.Eac hI nt ens i t ymeas ur ementi s madeei t hernor mal t oanac ous t i cgr i dors ur f ac e, ori nt hr eedi r ec t i ons( t r i ax i al l y )ateac hgr i dpoi nt . SoundPowerf l owt hr oughanac ous t i cs ur f ac ei s c al c ul at edf r om I nt ens i t ydat a.Soundpoweri sdi s pl ay edont heac ous t i cs ur f ac eus i ngac ol ormap. I nt er ac t i v eSour c eRank i ngal l owsy out ogr aphi c al l y doc umentt hebr eak downofac ous t i cener gymeas ur edf r om v ar i ousc omponent sofat es tar t i c l e. Ac ous t i cs our c esc anber ank edac c or di ngt ot hei r per c ent ageoft het ot al power ,i ndBuni t sorwat t s .
Tr ans f erf unc t i onsc anbec al c ul at edf r om mul t i pl e I nputandOut putt i mewav ef or ms .Ti medomai n wi ndowi ng( Rec t angul ar ,Hanni ng,orFl atT op) ,l i nearorpeakhol ds pec t r um av er agi ng,t r i gger i ng,and ov er l appr oc es s i ngc anbeappl i eddur i ngTr ans f er f unc t i onc al c ul at i ons .Or di nar yCoher enc esar eal s o c al c ul at edf ors i ngl eI nput s ,andMul t i pl e&Par t i al Coher enc esar ec al c ul at edf ormul t i pl eI nput s . Mul t i pl eOut putt i mewav ef or msorf r equenc ys pec t r a c anbec al c ul at edf r om Tr ans f erf unc t i onsandmul t i pl eI nputt i mewav ef or msorf r equenc ys pec t r a,and ani mat edODS’ sc anbedi s pl ay eddi r ec t l yf r om t he Out put s .Tr ans f erf unc t i onsc anbeder i v edf r om ex per i mentorf r om modes hapes .I nput sc anbeder i v ed f r om ex per i mentors y nt hes i z ed. Si mi l ar l y ,mul t i pl eI nputt i mewav ef or msorf r equenc y s pec t r ac anbec al c ul at edf r om Tr ans f erf unc t i ons andmul t i pl eOut putt i mewav ef or msorf r equenc y s pec t r a.TheOut put sc anbeder i v edf r om ex per i mentors y nt hes i z ed.Thi sc apabi l i t yc anbeus edf or For c ePat hAnal y s i s .
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i ne e r i ngSe r i e s St r uct ur alDynami csModi f i cat i on Exper i ment alFEA I fanoi s eorv i br at i onpr obl em i sduet ot heex c i t at i on ofar es onanc e,t hes t r uc t ur emus tei t herbei s ol at ed f r om i t sex c i t at i ons our c esorphy s i c al l ymodi f i edt o r educ ei t sv i br at i onr es pons el ev el s .Wi t ht hi sopt i on, y ouc anqui c k l yi nv es t i gat et heef f ec t sofs t r uc t ur al modi f i c at i onsont hemodesofas t r uc t ur e.Thenew modesc ant henbeus edi nMI MO c al c ul at i onst o det er mi net heef f ec tofs t r uc t ur al modi f i c at i onson ov er al l v i br at i onl ev el s . SDM model ss t r uc t ur al modi f i c at i onsus i ngi ndus t r y s t andar dFEAel ement s .TheFEAel ementl i br ar y i nc l udest hes ameel ement sus edbyt heEx per i ment al FEAopt i on. Al l modi f i c at i onel ement sar edi s pl ay edont he3D s t r uc t ur emodel .Eac hel ementt y pehasi t sown s pr eads heet ,wher ei t spr oper t i esc anbev i ewedand edi t ed.
Thi sopt i onal l owsy out oc ons t r uc tanFEAmodel of y ourt es ts t r uc t ur eands ol v ef ori t sanal y t i c al mode s hapes .TheFEAmodel i sc ons t r uc t edbyaddi ng i ndus t r ys t andar dFEAel ement st ot hes ame3D model t hati sus edf ordi s pl ay i ngex per i ment al s hape dat a.TheFEAel ementl i br ar yi nc l udess pr i ngs , mas s es ,damper s ,r ods( wi t hax i al s t i f f nes s ) ,bar s ( wi t hax i al ,s hear ,andbendi ngs t i f f nes s ) ,t r i angul ar andquadr i l at er al pl at eel ement s ,ands ol i del ement s s uc hast et r ahedr a,pr i s msandbr i c k s .Thes es ame el ement sar eus edbyt heSDM opt i on.Thi sopt i on i nc l udesbot hanor mal modes ol v erf orFEAmodel s wi t houtdampi ng,andac ompl exmodes ol v erf or FEAmodel swi t hdampi ng. Byc ons t r uc t i nganFEAmodel ands ol v i ngf ori t s modespr i ort oamodal t es t ,t hi sopt i onhel psy ou det er mi nepr opert r ans duc erandex c i t erl oc at i onsf or t het es t .Fol l owi ngt het es t ,y ouc anc ompar et he ex per i ment al andFEAmodes hapes( bot hgr aphi c al l y andnumer i c al l y )t ov al i dat ey ourr es ul t s .
SDM wor k swi t hei t heranal y t i c al ( FEA)modesor ex per i ment al ( EMA)modesoft heunmodi f i eds t r uc t ur e.Bec aus et henewmodesoft hes t r uc t ur ear e TheFEAmodel c anal s obeus edt oex pandex per c al c ul at eds oqui c k l y ,SDM c anbeus edf orModal i ment al dat at oi nc l udeal l unmeas ur edDOFswher e Sens i t i v i t ys t udi es ,wher et hous andsofs ol ut i onsar e t heFEAmodel i sdef i ned. c al c ul at edandr ank edf orc ompar i s on.SDM al s o i nc l udesas pec i al c ommandf oraddi ngt unedv i br at i on abs or ber st oas t r uc t ur e.
Vi br antPor t abl eHar dwar e Vi br antPor t abl eHar dwar ei ss hi ppedwi t h ME’ s c opes of t war epr ei ns t al l ed,andi ti s r eadyf orf i el dus e.AVPHboxc anbeus edf or t r oubl es hoot i ngnoi s eandv i br at i onpr obl ems i noper at i ngmac hi ner yus i ngODSAnal y s i s . I tc anal s obeus edf orex per i ment al Modal Anal y s i sus i ngei t heri mpac tt es t i ngors hak er t es t i ng.Wi t h4t o32s i mul t aneousac qui s i t i on c hannel s ,ME’ s c opec anbemac r opr ogr ammedt oac qui r easmanyc hannel sofdat aas nec es s ar yt odi s pl ayoper at i ngdef l ec t i on s hapesormodes hapesi nani mat i on. Wi t hal ar gear c hi v al dat abas ei ns t al l edei t her i nt heboxori nt hec l oud,aVPHboxc anal s o beus edf ors hor t t er m orl ongt er m mac hi ner y heal t hmoni t or i ngands t r uc t ur al heal t hmoni t or i ng.Redl i ghtgr eenl i ghtgr aphi c sona mac hi neors t r uc t ur emodel i nours epar at e net wor k bas edoper at orCons ol es of t war e mak esi teas yt omoni t orv i br at i onandot her engi neer i ngpar amet er s ,andqui c k l ys pot pr obl em ar eas .Tr endpl ot sands pec t r um al ar m bandsal s ohel pi dent i f yor der r el at edor r es onanc er el at edpr obl ems .ME’ s c opes of t war eopt i onsc anbeaddedt oy ourVPHbox asy ouneedt hem.
Vi s ua l Eng i ne Por t abl eHar dwar eOpt i ons EachVi br antPor t abl eHar dwar eopt i oni scont ai nedwi t hi nar uggedi zedPel i can®car r yi ng caseandi ncl udesaSSDcomput er ,powersur ge pr ot ect i on,wi r el essorcel lphonemodem, mul t i channelsi mul t aneousacqui si t i on,ext er nal BNCconnect or s,andext er nalUSB&Et her net connect or sf orsur vei l l ancecamer aornet wor k connect i onopt i ons. VPH804 4ChannelPor t abl eAcqui si t i on VPH808 8ChannelPor t abl eAcqui si t i on VPH816 16ChannelPor t abl eAcqui si t i on VPH824 24ChannelPor t abl eAcqui si t i on VPH832 32ChannelPor t abl eAcqui si t i on
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i ne e r i ngSe r i e s Techni calSpeci f i cat i ons Physi cal Di mensi ons Wei ght Mount i ng Power
I nput s
NumberofDynami cChannel s Dynami cRange Vol t ageRange I EPESensorPower Fr equencySpan Sampl esperChannel SpeedRange Tachomet er Tr i gger AC/ DCCoupl i ng DCRemoval
Dat aAr chi vi ng
St or ageCapaci t y Machi ne/St r uct ur eBased Basel i neSnapshot Shor t Ter m FI FO St or age LongTer m FI FO St or age Pr eandPost EventFI FO Secur i t y
Net wor ki ng
Communi cat i ons LAN/WANSuppor t Remot eAccess Remot eOper at i on
Pel i can1500case18. 50"x14. 06"x6. 93"( 47x35. 71x17. 60cm) 18. 8l bs Ruggedi zedPel i canCasewi t hHandl e 1 10V( 50or60Hz)-upt o1hourbat t er ybackup
4,8,16,24,32 102dB( 24bi tADCs) 10t o+10vol t s 4mA mi n( 0-97Hz) max( 0-105, 400Hz) 4t o250, 000 1t o100, 000RPM AnyChannel AnyChannel Yes Yes
Mi cr osof tSQLDat abase10Gbyt e( l ar gercapaci t yavai l abl e) Moni t or ed&Ani mat i onShapes Ti meWavef or ms Nar r owBand&Oct aveSpect r a Yes Oper at orCont r ol l ed Snapshot s( r ealt i me,persecond,mi nut e,hour ,day ,mont h) Oper at orCont r ol l ed Snapshot s( r ealt i me,perhour ,day ,mont h) Snapshot s( numberbef or e,numberaf t er ) Admi ni st r at orCont r ol l edDat abaseAccess
Wi r el ess,Cel l ul ar ,Et her net ,I nt er net 10/ 100MBEt her netPor t I nt egr at edWi r el essHub Wi ndowsRemot eDeskt op
Foundedi n1991,Vi br antTec hnol ogyi sal eaderi ndev el opi ng t ool sf orpos t pr oc essi ngv i br at i onandac ous t i ct es tdat a. Vi br antTechnol ogy ’ ss of t war ei sus edbys t r uc t ur al t es t i ngand machi ner ymai nt enanc epr of es s i onal si nawi dev ar i et yof i ndust r i es,i nc l udi ng: -Aut omot i ve -Aer ospace -Const r uc t i onSi t es&Equi pment -PowerGener at i on -PaperMi l l s -Chemi calPl ant s -St eelMi l l s -Semi conduc t orManuf ac t ur i ng -Spor t i ngGoodsManuf act ur i ng -Qual i f i cat i onT est i ng
Vi br a ntT ec hnol og y , I nc . -12835E . Ar a pa hoeRd. , T owe rI I S ui t e600 Ce nt e nni a l , CO80112 Phone( 831)4309045 F a x( 831)4309057 E ma i l s a l e s @v i be t e c h. c om www. v i be t ec h. c om