ANALYSIS OF VIBRATIONS OF THREE DEGREE OF FREEDOM DYNAMICAL SYSTEMS WITH SMA SPRING
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1 NYSIS O VIBRIONS O HREE DEGREE O REEDO DYNIC SYSES WIH S SPRING So Dnut Institute of ine Design unents Wrsw Universit of enoog - Wrsw 8 Nrbutt Str. Pon e-i: s@sir.pw.eu.p bstrt: is work rws ttention to te nsis of nis of tree-egree-of-freeo utopretri sste wit two penuus onnete b S Spe eor o spring in te neigbouroo of inerti n extern resonne. e sste onsists of te bo of ss wi is ung on spring n per n two penuus of te engt n sses n ounte to te bo of ss n onnete b S spring. e bo of ss is subjete to verti exittion wie one of te penuus is exite in te orizont iretion. ponoi oe is ssue to esribe te bevior of te spe eor eeent. e equtions of otion ve been sove nueri n tere ws stuie te infuene of teperture on te energ trnsfer between te oes of vibrtion. Soutions for te sste response re presente for speifi vues of te preters of te sste. It ws sown tt in tis tpe of sste one oe of vibrtion igt exite or p noter oe n tt exept ifferent kins of perioi vibrtion tere so pper oti vibrtion. Kewors: noniner ouping vibrtions spe eor. INRODUCIONS e subjet of tis work is n investigtion of nis of tree-egree-of-freeo sste wit two onnete b S spring penuus. Dni sstes wit eeents of te teti or psi oupe penuus ve iportnt ppitions [ ]. If te penuu is suspene to te fexibe eeent in tis sste our te utopretri exittion s resut of inerti ouping. In te sstes of tis tpe our te intern resonne of pretri tpe [ ]. It is we known tt intern resonne n give rise to ouping between te responses of vrious oes. e oe utopretri sste wit te spring ss per sste oupe to te n penuus ws stuie b Vs n Bjj [ ]. e noniner response of tree egree of freeo utopretri sstes wit penuus were investigte b utor et.: in se wen esti penuu is suspene to te fexibe eeent [7] for sste wit oube penuu [8] n for sste wit two penuus onnete b spring [9]. e onept of nge Young s ouus bse on te biit of ter riven S spring to ter its stiffness in te stress-free stte ws use for te utopretri sste oifition b utor n Pietrzkowski [] n utor n Gjos []. Due to te effet of te stress inue pse trnsition tese preters were rete to te ppie stress. Spe eor o S teris beuse of teir unique eni bevior ike spe eor effet pseuoesti effet n teperture epenent teri properties sow gret vntges s eeents of vne eni strutures. e biit to nge n ten reover rge pprent psti strin is resut of reversibe rtensite pse trnsition ue to te teperture or stress. Experients on S teris ve prove tt te Young ouus s we s intern frition s strong epenene on te rtensite frtion []. e S springs n oposites reinfore wit S fibers n be use in te tive strutur vibrtion ontro [ ] n buking ontro []. e ppition of S fibers for te sei-tive ontro of inte bes n ptes s been presente b Pietrzkowski [ 7]. e utor nse te nges of ntur frequenies of te struture ue to te ter tivtion n ni response of te sste in pure rtensite n ustenite pses of S fibers. In te present pper te pseuoesti effet in te utopretri sste wit S spring is stuie. Pseuoestiit n spe eor re bot ssoite wit teroesti rtensite trnsfortions. e spe eor effet is penoenon were psti efore objet reower teir origin for fter going troug proper et tretent. e pseuoesti bevior is rterize b opete strin reover opnie b rge steresis in oing-unoing e. ere re ot of ppers eite to te onstitutive esription of te bevior of Ss owever tis is not we estbise topi. e ponoi onstitutive oe ws propose b k [8] n b ier n Xu [9]. is oe were use b Svi et [] to esribe te bevior of te spe eor brs or b Piirio et. [ ] to esribe non Proeeings of te 9t Brziin Conferene on Dnis Contro n teir ppitions Serr Negr SP - ISSN
2 nsis of vibrtions... So Dnut ie sste wit Ss spring. In tis pper te ponoi onstitutive oe is ssue to esribe te bevior of te utoprrtri sste wit Ss eeent. e S presents two stbe pses: ustenite n rtensiti. e unixi stress σ is fift egree ponoi of te strin []: ε ε ε σ were re onstnts of te teri ε is strin is teperture is te teperture beow wi te rtensiti pse is stbe. eperture bove wi ustenite is stbe is writing b eqution:. SYSE DESCRIPION ND EQUIONS O OION e investigte sste ig. onsists te two oupe penuus onnete b S spring wi verti istne fro te bo of ss is intersetion engt n estiit fore S σ of engts n sses n ngs own fro te bo of ss suspene b n eeent rterize b iner estiit of rigiit Sk n iner ping R. ig. Seti igr of sste It is itte tt ping fores ppie in te inge opposes te otion of te penuus n. e penuu of ss is subjete to roni verti exittion t v t wie one of te penuus is exite in te orizont iretion b fore t t. is sste s tree egrees of freeo. s generize oorintes re ssue te verti ispeent of te bo of ss esure fro te equiibriu position n te nges n of efetions of te penuus esure fro te verti ine. strin of Ss spring is: ε e eqution of otions te stuie sste erive s grnge s equtions re in for: t k t g g introuing iensioness tie n iensioness preters: f f g k b b t v µ µ γ θ γ γ β β τ k t k t Proeeings of te 9t Brziin Conferene on Dnis Contro n teir ppitions Serr Negr SP - ISSN
3 nsis of vibrtions... So Dnut we n trnsfor into iensioness for brs were oitte for onveniene: β γ f µ τ bifurtion igrs wit respet to preter θ re presente in ig. for ping preter γ..;.;.;.; ; f ;.; f.; γ :γ. n in ig. for γ..;.;.;.; ; f ;.; f.; γ :γ. β θ γ b b f µ τ β γ b θ b. NUERIC RESUS Eqution of otion in iensioness for were sove nueri. In siutions were use te vues of Ss teri properties for Cu-Zn--Ni o t 7 K use b Svi et. [] n Piirio et. []. ese teri properties re:.9[p/k];.88x 7 [P];.8x 9 [P]; 88[K];.[K]. Cutions ve been one for ifferent vues of te sste preters espei θ. Exepr resuts te energ trnsfer for two vues of preter θ wt orresponing two pses: θ.7 wen rtensiti pse is stbe n vues of preter θ. wen ustenite pse is stbe were presente b utor in previous work []. Ner te intern n extern resonne epening on seetion of psi sste preters te pitues of vibrtions of oupe boies be rete ifferent otions: n penuus re perioi or qusi-perioi vibrtions but soeties te otions re oti. or rterizing n irregur oti response fors trnsition zone between one n noter tpe of regur ste resonnt otion bifurtion igrs n noter esriptors re use to prove te rter of vibrtions [ ]. Infuene of preters of te sste on fore vibrtions of n utopretri sste is ver iportnt. In te present pper te bifurtion igrs wit respet to te teperture preter θ in te se wen te bo of ss is subjete to verti exittion for ifferent ping preters re onstrute : in ig. for γ. n in ig. for γ..;.;.;.;.; f.; ; f ; γ :γ. e resuts re presente for veoities. In te se wen one of te penuus is exite in te orizont iretion ig. Bifurtion igr versus for oorintes: for:.;.;.;.;.; f.; ; f ; γ :γ n γ.. Proeeings of te 9t Brziin Conferene on Dnis Contro n teir ppitions Serr Negr SP - ISSN 78-7
4 nsis of vibrtions... So Dnut ig. Bifurtion igr versus for oorintes: for:.;.;.;.;.; f.; ; f ; γ :γ n; γ.. ig. Bifurtion igr versus for oorintes: for:.;.;.;.; ; f ;.;n for: f.; γ :γ ; γ.. Proeeings of te 9t Brziin Conferene on Dnis Contro n teir ppitions Serr Negr SP - ISSN 78-7
5 nsis of vibrtions... So Dnut ig. Bifurtion igr versus for oorintes: for:.;.;.;.; ; f ;.;n for: n f.; γ :γ ; γ.. ig. Bifurtion igr versus f for oorintes: for:.;.;.;.; ; f ;.; γ.: γ γ n. Proeeings of te 9t Brziin Conferene on Dnis Contro n teir ppitions Serr Negr SP - ISSN 78-7
6 nsis of vibrtions... So Dnut ig.7 Poinre ps for oorintes: for:.;.;.;.;.; γ.; γ :γ ; θ.; f.99 ig.8 xi exponent of punov for oorintes: for:.;.;.;.;.; γ.; γ :γ ; θ.; f.99 Proeeings of te 9t Brziin Conferene on Dnis Contro n teir ppitions Serr Negr SP - ISSN 78-7
7 nsis of vibrtions... So Dnut Next re presente bifurtion igrs for oorintes n. wen s bifurtion preter is te pitues of exittion. Exepr resuts for for vue θ. ustenite pse te S spring re given for te oorintes n in ig. were te bifurtion preter is te pitue of exittion f. s n be seen fro tese bifurtion igrs sever penoen n be observe e.g. te existene of regur or oti ttrtors n vrious bifurtions. e bifurtion igrs sow tt te otion of te in bo of ss n te penuus s ifferent rteristis n be perioi qusi-perioi n oti. o verif tese penoen power spetr ensities teir st ourier rnsfor Poinré ps n te rgest punov exponents orresponing to oorintes n re onstrute. Exepr resuts Poinre ps n xi exponent of punov for oorintes: for:.;.;.;.;.; γ.; γ :γ ; θ.; n for te bifurtion preter f.99 re presente in ig.7 n in ig.8. s n be seen fro ig.7 te Poinrè ps tre te strnge ttrtors n on ig.8 te rgest punov exponents orresponing to oorinte n oorintes n re positive. us in te onsiere se te otion is oti. CONCUSIONS e infuene of teperture on te beviour of n utopretri sste wit two penuus onnete b n S spring is ver interesting n iportnt ner te intern n extern resonnes. In utopretri sstes te energ is trnsferre between te oes of vibrtion in e e. e tie of tis e epens on te vues of te preters n nueri utions for tis tpe of sstes sou be rrie out over stisftori ong tie. Depening on te seetion of te psi sste preters te pitues of vibrtion of tree oes be rete ifferent n two tpes intern resonnes re observe. Cnging te teperture of te S spring ens we n nge te utopretri sste beviour. Referenes [] Den Hrtog J.P. 9 eni Vibrtions Grw-Hi Book Copn In. [] Drzin P. G. 99 Noniner sstes Cbrige Universit Press. [] So D. 997e energ trnsfer in noniner oupe two-egreeof-freeo sstes Pubig House of te Wrsw Universit of enoog enik in pois. [] So D. e Dnis of Coupe ree Degree of reeo eni Sste enis n eni Engineering [] Vs. Bjj.K. Dnis of utopretri vibrtion bsorber ug utipe penuus Journ of Soun n Vibrtion -. [] Vs. Bjj.K. Gob nis of n utopretri sste wit utipe penuus Journ of Coputtion n Noniner Dnis -. [7] So D. e perioi n oti vibrtion of ni sste wit esti penuu Proeeings of ESD 8 t Bienni SE Conferene on Engineering Sstes Design n nsis Ju-7 orino It ESD-9-8. [8] So D. Gjos K. Effet of ping on te perioi n oti vibrtion of sste wit oube penuu Proeeings of ESD 8 t Bienni SE Conferene on Engineering Sstes Design n nsis Ju-7 orino It ESD [9] So. D. 7 Noniner ositions of n utopretri sste wit two oupe penuus Proeeings of te SE 7 Interntion Design Engineering eni Conferenes & Coputers n Infortion I Engineering Conferene IDEC/CIE 7 Sept s Vegs Nev US DEC [] So D. Pietrzkowski. Dnis of ter tivte spe eor o in utopretri sstes wit two penuus Int. J. Non-iner e oi:./j.ijnonine.9.. in print. [] So D. Gjos K.8 e nis of n utopretri sste wit two oupe penuus onnete b S spring Proeeings of te 9 t Bienni SE Conferene on Engineering Sstes Design n nsis ESD 8 Ju 7-9 Hif Isre ESD8-9-. [] Jkson C.. Wgner H.J. Wsiewski R.J. 97 -Nitino-e o wit eor: Its Pisi turg Properties n ppitions NS-SP- Wgton D.C. [] ing C. Rogers C.. 99 One - Diension eroni Constitutive Retions for Spe eor teris J. of Inte. ter. Sts. n Strut. 7-. [] ing C. Rogers C.. 99 One Design of Spe eor os Cois n teir pitions in Vibrtions Contro Reent vvnes in tive Contro of Soun n Vibrtions Rogers C.. e. enoi Pubig nster Bse [] Rogers C.. ing C. Ji J. 989 Bevior of Spe eor o Reinfore Coposite Ptes Prts I n II Proeeings of te t Strutures Strutur Dnis n teri Conferene obie -7 [] Pietrzkowski. 998 Dnis of ter tivte spe eor o reinfore inte bes Journ of eoreti n ppie enis [7] Pietrzkowski. Ntur frequen oifition of ter tivte oposite ptes eni Vo. - [8] k. 98 oe free energ enis n teronis of spe eor os t et [9] uer I. Xu H. 99 On te pseuo-esti steresis t et. ter. 9-7 [] Svi.. Peo P..C.. Brg..B. Cos in spe eor two-br truss Int. Journ of Non-iner enis [] Piirio V. Btzr J.. Pontes Jr. B.R. eiks J..P. 7 On noniner response of non-ie vibrting sste wit spe eor o S 9 t Conferene on Dni Sstes eor n ppitions Proeeings Eit.J.wrejewiz P.Oejnik J.rozowski oz De.7- Pon [] Piirio V. Btzr J.. Pontes Jr. B.R. eiks J..P. 8 On Soerfe Effet in Non-Ie Vibrting Sste wit S Ug n verging eto Euroe 98 Cooquiu Book of bstrts ubin Universit of enoog Pon 7-7. [] So. D. 9e pseuoesti effet in utopretri sste wit S spring t Conferene on Dni Sstes eor n ppitions Proeeings Eit.J.wrejewiz P.Oejnik J.rozowski oz De.7- Pon -. [] Bker G.. Goub J. P. 99 Coti nis: n introution. Cbrige Universit Press. [] Szepisk-Stupnik W. CosBifurtions n rts roun Us Wor Sientifi onon. 7 Proeeings of te 9t Brziin Conferene on Dnis Contro n teir ppitions Serr Negr SP - ISSN 78-7
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