N G H I E N CO-U - TRAO B I M PHONG ANH HirdNG CUA TAI TRONG KHI DQNG DEN TRANG THAI UTVG SUAT - BIEN DANG CANH N A N G TENLCAKH-SSE SIMULATION THE EFFECTS OF AERODYNAMIC FORCE TO STRESS-STRAIN STATES OF LIFT WING KH-35E MISSILE Nguyen Thanh Binh', Nguyen Minh TiiW, Phan Tmmg Lai^ 'Trung tim Cdng nghp Co Chinh xic, Vien Khoa hgc - Cdng ngh$ Quin sg ^Vien Khoa hgc - Cdng nghp Quan sg T6M TAT Bdi bdo trinh bay ket qud nghien cieu khdo sdt dnh hircmg cila tdi trgng dgng den trgn thdi ung sudt vd bien dgng cita ket cdu cdnh ndng ten lira Kh-35E bang phuong phdp mo phong sir dung phdn mem ANSYS Structural Xdy dt/mg bieu si/rpht^ thugc cita gid tri img sudt cifc dgi vd bien dgng cue dgi theo tdi trgng dgng Dua ket ludn ve gi&i hgn chiu tdi lan nhat vd de xual gidi phdp tdng khd ndng ldm viec cda ket cdu Tir khda: Kit cdu cdnh ndng; Trgng thdi img suat - bien dgng; ANSYS structural ^ ABSTRACT This paper presents the survey results affects of the aerodynamic force to stress-strain slates of lift wing Kh-35E missile by means of simulations using numerical simulation software ANSYS struchiral Building dependency graph of maximum stress, and deformation under aerodynamicf force Concluded the biggest load limits and propose solutions to improve performance ofihe structure Keywords: Structural of lift wing, stress-strain states, ANSYS structural DAT VAN BE Ten lua Kh-35E cd canh ning bd tii d?ng X gin cd dinh tien khoang thilt hi K3 Quy dao ten lua Kh-35E cd till chia tiiinh giai doiin phdng vi giai doan bay hinh timh (3 giai dojn phdng, ten^lua dugc gia tdc nhd dgng co phong nen o cuoi giai do?n phdng dat van tdc cue dai (M=0,952) [1,2] Tuy nhien, d giai do?n niy ten liia chua dugc dieu khidn ndn gii di tii fgng dgng tic dgng len cic cinh tuong dli nhd (do a = 0» nen chi cd lgc cin) giai doan bay hinh trtoh, dudi tic dgng cua hp thing dieu khiln lam l$ch cac cinh lai vi lim xuit hipn gdc tin tirong ling Theo dd, gii tii tii tigng dgng tic dung len cic cinh cimg ting theo ISSN 0866-7056 TAP CHJ CO KHl VI$TNAM, Sd ID nam 2016 www.cokhivietnam.vn NGH|£N CU'U-TRAOD6I Dua tren bang thdng sd quy dao bay [1,2], thdi diem ten lua bdt ddu chuyen sang bay bang ung vdi phucmg dn ban vdi gdc hudng bdn 4* = 0" cd gdc tdn Idn nhdt (a = 3,695°) Lua chpn khdo sdt cdnh nang ten lua (cu thd la CN3) tai thdi diem ten lua chuyen sang bay bdng, Id trudng hop cac cdnh nang chiu tdi Upng dong ldn nhdt cdc trudng hgp tinh todn [1] Hinh I Phoi tri thdn cdnh ten lua Kh-35E Canh nang ten lira cd ket cau mdng va dien tich hinh chieu bang ldn Trong qua trinh bay, cdnh ndng ten lua dugc sir dyng de tao tdi hpng dpng gifip ten lua thdng dupc trpng Iyc ddng thdi dgt dupc dp cao cdn thiet Xet h? tpa dp khdo sdt tdi trpng dpng tdc dung len CN3 la he tpa dp sau: Gdc tpa dp ddt tai tam dp (2,39m; 0.28m; 0,29m) cua cdnh nang CN3 Tryc Ox hudng dpc theo tryc dpc ten lua tu mui din dudi Tryc Oy hudng theo phuong thang diing ldn Uen Trpc Oz hpp vdi tryc cdn Iai thdnh he tpa dp de cdc (hinh 2) Khi dd, ta coi tdi Upng dpng tdc dyng len cdnh ndng CN3 tgi thdi diem tdn Itia bat ddu chuyen sang bay bang Id tdi Upng tgp trung, cd didm dat tai tdm dp cdnh ndng vd dupc phdn tich thdnh thdnh phdn theo cdc tryc Ox, Oy, Oz tuong img [1]: F^ = 11.65 (N); F^ = 996 (N); F^ =-852 (N) Hinh Hp tpa dp khdo sdt cdnh ndng CN3 Bdi toan khdo sat ten lira Kh-35E img vdi phuong an bdn vdi gdc hudng ban *P = 0° nen ten Kia chi CO ddng Uong mat phdng Ihdng diing, tiic id ten lua chi bay vdi gdc tdn thay ddi Nhdn thdy, gid tri tdi trpng dpng theo phuong Ox rat nhd so vdi Mnh phdn cdn lai, va phdn theo phuong Oy vd Oz cd dp ldn tuong duong Dieu nay, dupc Ii gidi la cdnh nang ten lua dupc bd tri tren than dang X, cdc cdnh hpp vdi mat phdng thdng dung gdc 45" nen phan tich tai trpng ddng tac dung Ien cdnh cdc Ihdnh phdn theo he tpa dd khdp sat thi Ihdnh phdn flieo phucmg Oy vd Oz cd dp ldn xap xi Gid tri sai khdc Id tinh bdt ddi xung cua than ten lira (hinh 1) Bdi bdo md phdng xdc dinh trudng phdn bd iing suat - bien dang cdnh nang CN3 iing vdi gid tri tdi trpng dpng tren vd khdo sdt dnh hudng cua tdi Upng dpng tdc dung len nd vdi gid thilt chilu tdc dung vd (hem dat cua tdi trpng dpng khdng thay ddi so vdi trudng hpp tinh CO sd Chi thay ddi dp Idn ciia tai bang each thay ddi gid tri phdn thep Oy vd Oz Thanh phdn theo Ox gid thiet khdng thay d^i KET CAU CANH NANG Canh ndng ten liia Kh-35 cd cdu tao gdm, cum gdc canh va cym bdn cdnh lien ket vdi bang chdt ngang Khi ten liia bdo qudn dng phdng cdc cdnh nang d trang thdi gap gpn Khi phdng, CO cdu nen md chdt ham ldm bung cac canh d vi tri ldm vi6c dang X Cum gdc cdnh gdm gdc cdnh, chdt, cdc gdn ngang cdc dp che trudc vd sau Gdc cdnh ldm tii hpp kim nhdm dtic nguyen khdi AMg-6 Ben uong gdc cdnh cd co cau md cdnh bdng nen ten lua khdi dng phdng Bien dang cdnh ndng phdn gdc cdnh ldm tir nhdm tdm mdng AMg-6 dupc gan vdi gdc cdnh thdng qua cdc gdn ngang bang cac dinh tan Kdt cdu cum gdc cdnh dang khung xuong vdi vdch mdng dam bdo dp Cling vimg cung nhu tdi uu vd khdi Iupng (Wnh 3) ISSN 0866 • 7056 TAP CHf CO KHf VIET NAM Sd 10 nam 2016 www.cokbivietnam.vn CF NGHIEN CLfU - TRAO D O I Hinh Khung thdn goc cdnh (a) vd vo gdc cdnh (b) a) ''> , Hmh Khung thdn bdn cdnh (a) vd vo bdn cdnh (b) Cym ban cdnh gdm gdn chinh, cdc gan ngang va vd bpc bien dang lien ket vdi tuong Ur nhu gdc canh (hinh 4) Gan chinh cd mat cdt ngang dang I de giam khdi lupng Phdn gdc cua gan chinh cd Id de lien ket vdi gdc cdnh kieu ban \h bang chdt ngang lam hi thep C45 Mat phdng gdc canh gdn chat vdi than bang dc vit Thanh phan chiu tai chii ylu cua canh ndng la gdc canh vd gan chinh Cac gdn ngang va vd bpc dupc udn tir tdm mdng cd dp day mm X A Y DV'NG BAI TOAN M PHONG Bai bdo sir dung gdi phan mem ANSYS Static Structural mdi trudng WorkBench de md phdng khdo sdt dnh hudng cua phan luc phap tuyen den dp ben ket cdu c ^ nang ANSYS sii dung phuong phdp phan tir huu han de giai bdi toan kit cdu thdng qua vi?c rdi rac hda ket cau dang ludi (gdm cdc phan tu vdi cac mit lien ket vdi theo phuang) va gidi he phuong trinh (1) cho cdc phan td ludi dd Phucmg trinh ma Udn chuyen vi {x} cddang: Thupc tinh vdt lieu hpp kim nhdm AMg-6: [K'^](x}={F} - Khdi lupngrieng:p = 2800(jtg / m^); Trong dd: [K=] - Ma trdn dp cung; [F] - Tdi trpng tinh tdc dyng; - U"ng sudt tdi han bin:CT^= 320 (A/Pa); - Cng suat tdi han chay;CT^.= 160(MPa); - Md dun dan hdi: E = 7,2.10"'(Pa); -H?sd Poisson: I-= 0,32 Ma trdn dp ciing [K=] chiia cdc thdng tin vl kich thudc hinh hpc, thupc tinh vdt Ii?u ISSN 0866 - 7056 TAP CHf CO KHf V I £ T NAM (1) Sd 10 nam wTvw.cokhi Vietnam, 2016 NGH|£N CU'U-TRAO D I cua phdn tu Vdi moi dang phdn tii khdc nhau, phu thupc vdo vi Ui vd trang thdi ciia phan tii ANSYS se ty dpng xdy dyng ma tran dp cumg tuong ling Bd qua dnh hudng cua Upng Iuc, tdi trpng dpng coi la tdi Upng tihh Hmh Mo hinh lu&i cdnh ndng 3.1 Giai doan tiln xv ly - Xay dung md hinh hinh hpc cdnh nang: Md hinh hinh hpc 3D canh ndng dupc dung dua Uen ket qud dac thuc te cdc chi tilt cdu tao cdnh ndng De gidm thilu thdi gian tinh todn, phu hpp khd nang may tinh hi?n cd vd khdng dnh hudng den kit qua ldi gidi, md hinh hinh hpc dupc lupc bdt cdc chi tiet nhd nhu dinh tan Id nhd vd mdp vdt nhd - Thilt Igp thupc tinh vdt lieu: Cdc thupc tinh cua cdc logi vat lieu AMg-6 vd th6p C45 dupc xay dyng thu vien cua ANSYS Workbench tai myc Engineering Data Sau dd, cdc vat li?u ndy se dupc gdn tuong ung cho cdc chi tiet cua ket cau - Thilt lgp kieu tilp xuc (Comiections) giua cdc chi riit: Su dyng loai lien ket cho cac chi riit Uong kit c4u la lien kit cho phep trupt theo bl mat tiep xuc (No Seperation) ddi vdi lien ket ciia tryc ngang vdi gdc canh vd gan dpc, lien kit gdn ch|it (Bonded) ddi vdi cdc be mat tiep xdc cdn lgi - Chia ludi: Bdn chdt ciia viec chia ludi Id rdi rac hda ket cau 3D cdnh ndng thdnh cdc p h ^ tii ludi Ludi dupc chia la ludi hi dien, mdi phin tu ludi cd nut tgi dinh ciia hi dien lien kit vdi cac phdn tu khac.Thiet lap kich thudc toi thilu cho phdn tu ludi Id 10 mm Nhgn dupc md hinh ludi, gdm; 183647 nut va 93941 phdn tir nhu hinh - Thilt lap cac rang bupc (dieu kien bien): Thilt lap thudc tmh ngdm (Fixed Support) tai be mat gdc cdnh cdnh ldi gdn Cling vdi thdn tai be mat gdc canh Cdc be mgt khdc de ty - Dat tdi Upng tdc dyng: Tdi Upng dpng tac dyng coi la luc tap trung, gdm thdnh phdn theo cdc phuong tuong ung vd cd diem ddt tgi tdm dp Ddi tupng tac dung la toan bd be mat chdy bao ciia cdnh 3.2 Giai bai todn vd xir 1^ kit qud Tiln hanh gidi Idn lupt hing trudng hpp md phdng iing vdi gid tri cua cdc thdtih phdn tdi Upng dpng theo bdng Thanh phan F^ coi nhu khdng ddi Trong dd, gid tri tdi Upng ciia THI Id luc dpng tac dung cdnh ndng CN3 ten lua bat ddu chuyen sang bay bang Ta tang ddn gid tri tdi Upng de khap sdt trang thai iing sudt bien dgng d muc dp chiu tdi cao hon cung nhu de ddnh gid sy dam bdo ciia h? sd an todn cua tdi Upng lam viec ddi vdi ket cdu cd san Trong bdi todn ta quan tdm den trgng thdi ung suat - bien dang cua ket cau nen Uong myc Solution cdn thiet lap trudng phdn bd cho tham sd la iing sudt (von-Mises SUess) vd bien dgng ti ddi (von-Mises Elastic SUain) Sau moi ldi gidi quan sdt ket qua tren mdi trudng phdn bo vd luu Igi gid tri cyc dai cumg nhu vj tri xuat hien cua cac tham sd ^ ISSN 0866 - 7056 T^P CHf CO KHf VIETNAM Sd 10 nam 2016 www.cokhivietnam.vn NGHieNCCrU-TRAOeOl Bdng / Bdng cdc tru&ng hgp tinh todn: XT THI TH2 TH3 TH4 THS TH6 TH7 F.(N) 11.65 11.65 11.65 11.65 11.65 11.65 11.65 F,(N) 960 1250 1500 2000 3000 4000 5000 F(N) -852 -1250 -1500 -2000 -3000 ^(000 -5000 F„(N) 1283.60 1767.81 2121.35 2828.45 4242.66 5656.87 7071.08 KET QUA M PHONG Kdt qui md phdng nhin dugc trudng phan bo ling suit va bien dang tren cic chi tidt kit ciu cinh ning: (Jng suit cgc dgi a^^ vi bidn dang ti ddi cgc dgi e^^ cic trudng hgp tinh d^u xuit hign tai true chinh bin cinh nang (hinh 6) Hinh lfng sudt cifc dgi xuit hien tgi hyc chinh bdn canh nang T4 cac tnidng hgp tinh toan ung vdi cic gdc lech cinh lii vi vin tdc khic nhin dugc bing tdng hpp sau: Bang Bdng ing sudi arc dgi o _ (MPaJ vd bien dgng ti doi cifc dgi e F„(N) - (MP.) ^.™ 1283.60 103.52 0.0014 1767.81 139.42 0.0020 2121.35 167.31 0.0024 2828.45 223.08 0.0031 Bien dang ti doi cite dgi 4242.66 334.62 0.0047 5656.87 446.16 0.0063 7071.08 557.70 0.0079 Ung suit cttc dgi