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nd26751326-how_to_use_fem_ansys_parameter_optimization_and_probability_design_of_ultrasonic_welding_horn

Mashoko okutanga

Nekuvandudzwa kweiyo ultrasonic tekinoroji, mashandisirwo ayo ari kuwanda uye akawandisa, inogona kushandiswa kuchenesa tunhu tudiki tudiki, uye inogona zvakare kushandiswa kunyorera simbi kana plastiki. Kunyanya muzvigadzirwa zvemazuva ano zvepurasitiki, kuwelda yehtrasonic inowanzoshandiswa, nekuti iyo dhizaini yakasiyiwa, iyo chitarisiko chinogona kuve chakakwana, uye basa rekudzivirira mvura uye kusunga guruva kunopihwawo. Dhizaini yepurasitiki yekumonera runyanga ine zvakakosha pamagumo ekupedzisira ekushambidza mhando uye gadzira kugona. Mukugadzirwa kwemamita emagetsi matsva, mafungu e ultrasonic anoshandiswa kupamhidzira kumeso nekumusoro kumeso pamwechete. Zvisinei, panguva yekushandiswa, zvinowanikwa kuti dzimwe nyanga dzakaiswa pamushini uye dzakatsemuka uye kumwe kukundikana kunoitika munguva pfupi. Humwe hunyanzvi hwerunyanga Chiyero chehurema chakakwirira. Zvikanganiso zvakasiyana zvakakanganisa zvakanyanya mukugadzirwa. Zvinoenderana nekunzwisisa, vatengesi vezvigadzirwa vane mashoma dhizaini yekugona kwehwamanda, uye kazhinji kuburikidza nekudzokorora kugadziriswa kuzadzisa dhizaini dhizaini. Naizvozvo, zvinodikanwa kushandisa yedu pachedu tekinoroji kukudziridza rakasimba runyanga uye inonzwisisika dhizaini nzira.

2 Ultrasonic epurasitiki Welding musimboti

Ultrasonic epurasitiki yekumonera inzira yekugadzirisa iyo inoshandisa musanganiswa weiyo thermoplastics mune yakakwira-frequency kumanikidzwa vibration, uye iyo yekumisikidza nzvimbo inokweshana ichipesana kuti ibudise yemuno-tembiricha yakanyungudika. Kuti uwane zvakanaka zvema ultrasonic welding mhedzisiro, zvishandiso, zvishandiso uye maitiro parameter anodikanwa. Inotevera inongedzo ipfupi kune hwayo.

2.1 Ultrasonic epurasitiki Welding system

Mufananidzo 1 ndeye schematic maonero eiyo welding system. Simba remagetsi rinopfuura nemumagetsi jenareta uye gudzazwi remagetsi kuburitsa chiratidzo chinoshandura chemagetsi cheiyo ultrasonic frequency (> 20 kHz) inoiswa kune iyo transducer (piezoelectric ceramic). Kuburikidza netransducer, simba remagetsi rinova simba remuchina wekudengenyeka, uye kukura kweyakagadziriswa vibration inogadziriswa nehwamanda kuenda kune yakakodzera yekushanda amplitude, uyezve zvakaenzana zvinopfuudzwa kuzvinhu zvakasangana nazvo kuburikidza nenyanga. Idzo nzvimbo dzekubata dzezvinhu zviviri zvekuwisira zvinhu zvinoiswa kune yakanyanya-frequency kumanikidzwa vibration, uye iko kukakavara kupisa kunogadzira yemuno tembiricha yakanyungudika. Mushure mekutonhora, izvo zvinhu zvinosanganiswa kuti zviwane kuwelda.

Mune welding system, chiratidzo sosi chikamu chedunhu chine simba gudzazwi redunhu iro frequency kugadzikana uye kugona kugona kutyaira kunoitisa mashandiro emuchina. Izvo zvinhu i thermoplastic, uye dhizaini yenzvimbo yekubatana inoda kufunga maitiro ekukurumidza kugadzira kupisa nedoko. Transducers, nyanga nenyanga zvinogona zvese kutariswa semishini yezvivakwa kuti zvive nyore kuongorora kwekubatanidza kwavo kudedera. Mupurasitiki yekutengesa, mechanical vibration inoparidzirwa nenzira yemafungu ekureba. Maitiro ekunyatso chinja simba uye kugadzirisa iyo amplitude ndiyo yakakosha poindi yekugadzira.

2.2horn

Runyanga runoshanda seyehukama hwekubatana pakati peiyo ultrasonic yekutengesa muchina uye izvo zvinhu. Basa rayo guru nderekuendesa kureba kwemuchina vibration yakaburitswa neiyo variator zvakaenzana uye zvinobudirira kune izvo zvinhu. Izvo zvinoshandiswa zvinowanzo kuve zvemhando yepamusoro aluminium alloy kana kunyangwe titanium alloy. Nekuti dhizaini yezvinhu zvepurasitiki inoshanduka zvakanyanya, chitarisiko chakasiyana zvakanyanya, uye runyanga runofanira kuchinja zvinoenderana. Maumbirwo enzvimbo yekushanda anofanirwa kunge achienderana neicho chinhu, kuti arege kukuvadza plastiki kana ichidedera; panguva imwecheteyo, yekutanga-kuraira kwenguva refu vibration yakasimba frequency inofanirwa kuratidzwa pamwe nekuburitsa kweyakawandisa yemuchina wekutemesa, zvikasadaro simba rekudengenyeka richapedzwa mukati. Kana runyanga ruchidedera, kunetseka kwenzvimbo kunoitika. Maitiro ekugadzirisa izvi zvivakwa zvemuno zvakare dhizaini kufunga. Ichi chinyorwa chinoongorora maitiro ekushandisa ANSYS dhizaini nyanga yekugadzirisa dhizaini dhizaini uye ekugadzira mamirire.

3 Welding nyanga dhizaini

Sezvambotaurwa, dhizaini yenyanga yekucheresa yakakosha. Kune akawanda emagetsi emagetsi ekushambadzira muChina anogadzira nyanga dzawo dzekutenderera, asi chikamu chakakura chazvo kutevedzera, uyezve ivo vari kugara vachicheka uye kuyedza. Kubudikidza neiyi inodzokororwa nzira yekugadzirisa, kubatana kwehwamanda nemidziyo frequency kunoitwa. Mune bepa iri, iyo inogumira element nzira inogona kushandiswa kuona kuwanda paunenge uchigadzira runyanga. Nyanga yekuyera mhedzisiro uye dhizaini yekukanganisa kukanganisa ingori 1%. Panguva imwecheteyo, bepa iri rinounza pfungwa yeDFSS (Dhizaini Yechitanhatu Sigma) kukwidziridza uye kusimba dhizaini yenyanga. Pfungwa ye6-Sigma dhizaini ndeyekuunganidza zvizere izwi remutengi mune dhizaini dhizaini yekugadzira; uye pre-kutarisisa kweanogona kutsauka mune yekugadzira maitiro kuona kuti mhando yeyekupedzisira chigadzirwa ichigovaniswa mukati meyakaenzana chikamu. Iyo dhizaini yekuratidzira inoratidzwa muMufananidzo 2. Kutanga kubva mukuvandudzwa kwezviratidzo zvekugadzira, chimiro uye zviyero zvehwamanda zvakatanga kugadzirwa zvinoenderana nezviripo chiitiko. Iyo parametric modhi inosimbiswa muANSYS, uyezve iyo modhi inotemerwa neyekufananidza kuyedza dhizaini (DOE) nzira. Maparamende akakosha, zvinoenderana nezvinodiwa zvine simba, sarudza kukosha, uye wozoshandisa nzira yediki-dambudziko kugadzirisa mamwe ma parameter. Tichifunga nezve simba rezvinhu uye mamiriro ezvakatipoteredza panguva yekugadzira uye kushandisa runyanga, rakagadzirwawo nemashiviriro kuzadzisa zvinodiwa zvemitengo yekugadzira. Chekupedzisira, iyo yekugadzira, bvunzo uye bvunzo dzidziso dhizaini uye chaiko kukanganisa, kusangana nemagadzirirwo zviratidzo anonunurwa. Iyi inotevera nhanho-nhanho yakadzama sumo.

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3.1 Geometric chimiro dhizaini (kuumba parametric modhi)

Kugadzira runyanga rwekutungidza kunotanga kuona chimiro chayo chejometri uye dhizaini uye inogadza parametric modhi yekuongorora inotevera. Mufananidzo 3 a) ndiwo magadzirirwo enyanga inowoneka zvakanyanya, umo magero akati wandei akafanana neU akavhurwa nenzira yekuzunguzika pane chakakomberedza cuboid. Izvo zviyero zvakaenzana ndehurefu hwe X, Y, uye Z madhairekisheni, uye iwo ekumashure ekuyera X uye Y anowanzo fananidzwa nehukuru hweiyo workpiece iri kusunganidzwa. Kureba kweZ kwakaenzana nehafu wavelength yeiyo ultrasonic wave, nekuti mune yechinyakare vibration dzidziso, yekutanga-odhiyo axial frequency yechinhu chakasimudzwa chinotariswa nehurefu hwayo, uye iyo hafu-wave kureba inonyatsoenderana neacoustic frequency frequency. Dhizaini iyi yakawedzerwa. Use, inobatsira pakupararira kwemasaisai ezwi. Chinangwa cheiyo U-yakaumbwa groove ndeye kudzikisa kurasikirwa kwekuzungunusa kwekuzununguka kwehwamanda. Chinzvimbo, hukuru uye nhamba zvakatarwa zvichienderana nehukuru hwese hwenyanga. Zvinogona kuonwa kuti mune ino dhizaini, pane mashoma ma parameter anogona kudzorwa zvakasununguka, saka takaita shanduko pane iyi hwaro. Mufananidzo 3 b) runyanga ruchangobva kugadzirwa rune imwe paramende yakakura kupfuura yechinyakare dhizaini.Ukuwedzera, iro gomba rakatemwa panzvimbo yekushanda kwenyanga kunyatsobatana nepamusoro peiyo workpiece yepurasitiki, izvo zvinobatsira kupfuudza vibration simba uye kuchengetedza iyo workpiece kubva mukukuvara. Iyi modhi inogara ichienzanisirwa nenzira yeANSYS, uyezve inotevera dhizaini yekuyedza.

3.2 DOE yekuyedza dhizaini (kutsunga kwakakosha parameter)

DFSS inogadzirirwa kugadzirisa anoshanda enjiniya matambudziko. Iyo haiteedzere kukwana, asi inoshanda uye yakasimba. Inoburitsa pfungwa ye6-Sigma, inobata kupokana kukuru, uye inosiya "99.97%", uku ichida kuti dhizaini ive inopesana nekusiyana kwezvakatipoteredza. Naizvozvo, usati wagadzira iyo paramende optimization, inofanira kutanga yatariswa, uye saizi ine yakakosha pesvedzero pane chimiro inofanirwa kusarudzwa, uye hunhu hwavo hunofanirwa kutemerwa zvinoenderana nesimba rekusimba.

3.2.1 DOE paramende yekumisikidza uye DOE

Iyo dhizaini dhizaini ndiyo nyanga yekumira uye saizi chinzvimbo cheU-yakaumbwa groove, nezvimwe, zvisere zvisere. Chinongedzo paramende ndiyo yekutanga-odhiyo axial vibration frequency nekuti ine simba rakakura pane weld, uye iyo yakanyanya kukoshesa kushushikana uye mutsauko mukushanda kwepamusoro amplitude inogumira sekusiyana kwenyika. Zvichienderana neruzivo, zvinofungidzirwa kuti mhedzisiro yemiparameter pamhedzisiro yakaenzana, saka chinhu chimwe nechimwe chinogadzirirwa pamatanho maviri, akakwirira uye akaderera. Iyo rondedzero yemiparamendi uye anoenderana mazita ndeinotevera.

DOE inoitwa muANSYS uchishandisa iyo yakatangwa parametric modhi. Nekuda kwekukanganisa kwesoftware, yakazara-chinhu DOE inogona kushandisa chete kusvika pamatanho manomwe, nepo modhi ine 8 paramita, uye ANSYS kuongororwa kwemhedzisiro yeDOE haina kukwana senge yehunyanzvi 6-sigma software, uye haigone kubata kudyidzana. Naizvozvo, isu tinoshandisa APDL kunyora DOE chiuno kuverenga uye kubvisa mhedzisiro yechirongwa, uye nekuisa iyo data muMinitab kuti iongororwe.

3.2.2 Kuongororwa kwemhedzisiro yeDOE

Minitab's DOE ongororo inoratidzwa muMufananidzo 4 uye inosanganisira iyo huru inokonzeresa kuongorora pamwe nekudyidzana kuongorora. Iyo huru inokonzeresa yekuongorora chinhu inoshandiswa kuona kuti ndedzipi dhizaini shanduko dzine hunyanzvi pane iyo chinongedzo chinoshanduka, zvichidaro zvichiratidza kuti ndeapi akakosha magadzirirwo akasiyana. Iko kudyidzana pakati pezvinhu kunobva kwaongororwa kuona danho rezvinhu uye kudzikisa chiyero chekubatanidza pakati pezvakasiyana dhizaini. Enzanisa mwero wekuchinja kwezvimwe zvinhu kana dhizaini yakakwira kana yakaderera. Zvinoenderana neiyo yakazvimirira axiom, iyo yakanakisa dhizaini haina kubatanidzwa kune mumwe nemumwe, saka sarudza iyo nhanho isinganyanyi kusiyanisa.

Mhedzisiro yekuongororwa kwenyanga yekumwaya mune ino bepa ndeiyi: akakosha dhizaini parameter ndeyekunze arc radius uye yakafara upamhi hwenyanga. Iyo nhanho yezvikamu zviviri iri "yakakwira", ndiko kuti, nharaunda inotora kukosha kwakakura muDOE, uye iyo groove upamhi inotorawo kukosha kwakakura. Iwo akakosha ma parameter uye kukosha kwavo kwakatemwa, uyezve mamwe akati wandei ma parameter akashandiswa kukwidzirisa dhizaini muANSYS kugadzirisa iyo frequency frequency kuti ienzane neiyo frequency yekushandisa yemuchina wekutema. Iyo optimization maitiro ndeinotevera.

3.3 Target parameter optimization (runyanga frequency)

Iyo paramende marongero ekugadzirisa dhizaini akafanana neayo eDOE. Musiyano uripo ndewekuti kukosha kwezvikamu zviviri zvakakosha kwakatemwa, uye mamwe matatu matatu ane hukama nezvinhu zvemukati, izvo zvinoonekwa senge ruzha uye hazvigone kugadziridzwa. Matatu paramende akasara anogona kugadziridzwa ndiwo axial nzvimbo yeslot, kureba uye hupamhi hwenyanga. Iyo optimization inoshandisa iyo subproblem yekufungidzira nzira muANSYS, inova nzira inoshandiswa zvakanyanya mumatambudziko einjiniya, uye iyo chaiyo nzira inosiyiwa.

Izvo zvakakosha kuti uzive kuti kushandisa frequency seyakanangana kusiana kunoda hunyanzvi hushoma mukushanda. Nekuti pane akawanda dhizaini maparamendi uye akasiyana akasiyana mutsauko, nzira dzekudengenyeka kwehwamanda dzakawanda muhuwandu hwehuwandu hwekufarira. Kana mhedzisiro yekuongororwa kwemodal ikashandiswa zvakananga, zvinonetsa kuwana yekutanga-odhiyo axial modhi, nekuti modal kuteedzana kwekuregedza kunogona kuitika kana ma parameter achinja, ndiko kuti, echisikigo frequency ordinal inoenderana neyekutanga modhi shanduko. Naizvozvo, bepa rino rinotora ongororo yemodal kutanga, uyezve rinoshandisa modal yekumisikidza nzira kuwana iyo frequency mhinduro curve. Nekutsvaga iyo yepamusoro kukosha kweiyo frequency mhinduro curve, inogona kuve inoenderana inoenderana modal frequency. Izvi zvakakosha kwazvo mune otomatiki optimization maitiro, kubvisa kudiwa kwemanyore kuona modality.

Mushure mekugadziriswa kwapera, dhizaini yekushanda frequency yehwamanda inogona kuve padhuze nepakati pechinangwa, uye iko kukanganisa kuri kushoma pane kukosha kwekushivirira kwakatsanangurwa mukugadzirisa. Panguva ino, dhizaini yenyanga yakatemwa kwazvo, inoteverwa nekugadzira kushivirira kwekugadzirwa dhizaini.

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3.4 Kushivirira dhizaini

Iyo yakajairika dhizaini dhizaini inopedzwa mushure mekugadzirwa kwematanho ese, asi pamatambudziko einjiniya, kunyanya kana uchifunga nezve mutengo wekugadzirwa kwakawanda, kushivirira dhizaini kwakakosha. Mutengo wekushomeka kwakaringana wakadzikiswa, asi kugona kusangana nemametric metric kunoda kuverenga kwehuwandu hwehuwandu hwehuwandu. Iyo PDS Pangangoita Dhizaini Sisitimu muANSYS inogona kuongorora zvirinani hukama pakati pekugadzira paramende shiviriro uye kunongedzera paramende shiviriro, uye inogona kuburitsa yakazara yakazara inowirirana mushumo mafaira.

3.4.1 PDS marongero eparamende uye kuverenga

Zvinoenderana nepfungwa yeDFSS, kuongororwa kwekushivirira kunofanirwa kuitwa pamatanho akakosha ekugadzira, uye kumwe kutsungirira kwakawanda kunogona kutsanangurwa zvine simba. Mamiriro ezvinhu mupepa iri akakosha, nekuti zvinoenderana nekugona kwemuchina, kubvumidza kwekugadzira kwemajometri dhizaini dhizaini kudiki kwazvo, uye hakune chekuita pahwamanda yekupedzisira; nepo parameter yezvinhu zvakagadzirwa zvakasiyana zvakanyanya nekuda kwevanopa, uye mutengo wezvinhu zvakagadzirwa unodarika Zvinopfuura makumi masere muzana zvemakona ekugadzirisa mutengo. Naizvozvo, zvinodikanwa kuseta inonzwisisika shiviriro renji kune izvo zvinhu zvivakwa. Izvo zvinoenderana nezvinhu zvemukati pano kuwanda, modulus yekusimba uye kumhanyisa kweruzha wave kupararira.

Kushivirira kuongororwa kunoshandisa zvisina kujairika Monte Carlo kuenzanisa muANSYS kuyedza nzira yechiLatin Hypercube nekuti inogona kuita kuti kugoverwa kwemapoinzi esampuli kuve yunifomu uye zvine musoro, uye uwane kuwirirana kuri nani nemapoinzi mashoma. Iri bepa rinoisa mapoinzi makumi matatu. Fungidzira kuti kushivirira kwetatu parameter yezvinhu kunogoverwa zvinoenderana naGauss, kutanga kupihwa muganho wepamusoro uye wezasi, uye wozoverengerwa ANSYS.

3.4.2 Kuongororwa kwemhedzisiro yePDS

Kubudikidza nekuverenga kwePDS, zvirevo zvinowirirana zvinoenderana nemakumi matatu esampuli zvinopihwa. Kugovaniswa kwezvakanangana zvinongedzo hazvizivikanwe. Ma parameter akaiswa zvakare achishandisa Minitab software, uye kuwanda kwacho kunogovaniswa zvinoenderana neyakajairwa kugovera. Izvi zvinovimbisa iyo nhamba yehunyanzvi yekushivirira kuongororwa.

Kukarukureta kwePDS kunopa fomura inokodzera kubva pamusiyano wekushanduka kusvika pakuwedzera kwekushivirira kwechinangwa chakanangana: iko y ndiko kusiyanisa kunongedzera, x ndiko kusiyanisa kwekugadzira, c ndiko kuenderana kwakaringana, uye ini ndiyo nhamba inoshanduka.

Zvinoenderana neizvi, kushivirira kwekuvavarira kunogona kupihwa kune yega dhizaini dhizaini kupedzisa basa rekushivirira dhizaini.

3.5 Kuongorora kwekuyedza

Chikamu chepamberi dhizaini yekugadzika kwenyanga dzese dzemoto. Mushure mekupedzwa, izvo zvigadzirwa zvakagadzirwa zvinotengwa zvinoenderana neyakareruka zvinhu zvinobvumidzwa nedhizaini, zvobva zvatumirwa mukugadzira. Frequency uye modal kuyedza kunoitwa mushure mekugadzira kugadzirwa, uye iyo bvunzo nzira inoshandiswa ndiyo yakapusa uye inoshanda kwazvo sniper bvunzo nzira. Nekuti iyo inonyanya kunetseka indekisi ndiyo yekutanga-odhiyo axial modal frequency, yekumhanyisa sensor inosungirirwa kune inoshanda nzvimbo, uye imwe mugumo inorohwa pamwe neaxial direction, uye iyo chaiyo frequency yehwamanda inogona kuwanikwa nekuratidzwa kwespecral. Iwo mhedzisiro mhedzisiro yedhizaini i14925 Hz, bvunzo mhedzisiro ndeye 14954 Hz, iyo frequency resolution iri 16 Hz, uye iyo yepamusoro kukanganisa iri pasi pe1%. Zvinogona kuonwa kuti iko kwechokwadi kweyekupedzesa element simulation mune iyo modal kuverenga iko kwakanyanya kwazvo.

Mushure mekupasa muyedzo wekuyedza, runyanga rwunoiswa mukugadzirwa uye kuungana pane iyo ultrasonic yekutengesa muchina. Mamiriro ezvinhu anoita zvakanaka. Basa racho rave rakagadzikana kweinopfuura hafu yegore, uye iwo mwero wekudzidzira iwo wakakwira, uyo wakapfuura hupenyu hwemwedzi mitatu yebasa hwakavimbiswa neyakajairika michina yekugadzira. Izvi zvinoratidza kuti dhizaini iri kubudirira, uye maitiro ekugadzira haana kudzokororwa nekugadziriswa, kuchengetedza nguva uye manpower.

4 Mhedziso

Iri bepa rinotanga nenongedzo yeiyo yakakwenenzverwa epurasitiki yekumonera, inobata zvakadzama tarisiro yehunyanzvi yekutenderera, uye inotsvaga dhizaini yekugadzira yenyanga nyowani. Wobva washandisa yakasimba simulation basa rechinhu chinogumira kuongorora dhizaini zvine mutsindo, uye nekuzivisa iyo 6-Sigma dhizaini dhizaini yeDFSS, uye kudzora akakosha dhizaini parameter kuburikidza neANSYS DOE yekuyedza dhizaini uye kuongororwa kwePDS kushivirira kuti uwane yakasimba dhizaini. Chekupedzisira, runyanga rwakagadzirwa zvine hungwaru kamwe chete, uye dhizaini yacho yaive neyakaedzwa neyekuyedza frequency test uye iko iko kwechokwadi kugadzirwa. Izvo zvakare zvinoratidza kuti iyi seti yema dhizaini nzira inogoneka uye inoshanda.


Post nguva: Nov-04-2020