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Masiraidhi anoratidza zvinyorwa zvitatu pane siraidhi. Shandisa mabhatani ekumashure neanotevera kufamba nemumasiraidhi, kana mabhatani ekudzora masiraidhi ari kumagumo kuti ufambe nemumasiraidhi ega ega.
Mhedzisiro yemicrostructure pakuumbwa kwesimbi isina tsvina masheets ndiyo inonyanya kunetsa kune sheet metalworking mainjiniya. Kune austenitic steels, kuvapo kwe deformation martensite (\({\ alpha} ^{^{\ prime))\) -martensite) mu microstructure inotungamirira kukuoma kukuru uye kuderera kwekuita. Muchidzidzo ichi, isu tine chinangwa chekuongorora kuumbwa kweAISI 316 simbi dzine masimba akasiyana emartensitic nenzira dzekuyedza uye dzenjere. Padanho rekutanga, simbi yeAISI 316 ine gobvu yekutanga ye2 mm yakanyungudutswa uye inotonhora yakakungurutswa kune akasiyana makobvu. Mushure meizvozvo, iyo yehukama strain martensite nzvimbo yakayerwa ne metallographic test. Iko kuumbwa kwemashizha akapetwa kwakagadziriswa kushandisa hemisphere burst test kuti uwane dhiyabhorosi yedhidhiyo (FLD). Iyo data yakawanikwa semhedzisiro yezviedzo inoshandiswa zvakare kudzidzisa uye kuyedza artificial neuro-fuzzy interference system (ANFIS). Mushure mekudzidziswa kwe ANFIS, matambudziko makuru akafanotaurwa neural network akafananidzwa neseti nyowani yemhedzisiro yekuedza. Zvigumisiro zvinoratidza kuti kutonhora kunotonhora kune kukanganisa kuumbwa kwemhando iyi yesimbi isina tsvina, asi simba repepa rinovandudzwa zvikuru. Pamusoro pezvo, ANFIS inoratidza mhedzisiro inogutsa kana ichienzaniswa neyekuyedza kuyerwa.
Iko kugona kuumba sheet simbi, kunyangwe iri nyaya yezvinyorwa zvesainzi kwemakumi emakore, inoramba iri nzvimbo inonakidza yetsvagiridzo yesimbi. Zvishandiso zvitsva zvehunyanzvi uye modhi dzemakomputa zvinoita kuti zvive nyore kuwana zvingangoita zvinhu zvinokanganisa kuumbwa. Kunyanya kukosha, kukosha kweiyo microstructure yemuganho wechimiro kwakaratidzwa mumakore achangopfuura uchishandisa Crystal Plasticity Finite Element Method (CPFEM). Kune rimwe divi, kuwanikwa kwe scanning electron microscopy (SEM) uye electron backscatter diffraction (EBSD) inobatsira vaongorori kuona chiitiko chemicrostructural chekristaro zvimiro panguva yekuparara. Kunzwisisa pesvedzero yezvikamu zvakasiyana musimbi, saizi yezviyo uye kutaridzika, uye hurema hwe microscopic padanho rezviyo kwakakosha kufanotaura kuumbwa.
Kusarudza kuumbwa kwega kwega kwakaoma, sezvo kuumbwa kwakaratidzwa kunonyanya kutsamira pamakwara 1, 2, 3. Nokudaro, pfungwa dzemazuva ose dzekupedzisira kuumba dambudziko harivimbiki pasi pemamiriro ekutakura asina kuenzana. Kune rimwe divi, nzira dzakawanda dzekutakura mumaindasitiri ekushandisa dzinoiswa sezvisiri-yekurodha. Panyaya iyi, tsika dzechinyakare hemispherical uye yekuedza Marciniak-Kuchinsky (MK) nzira4,5,6 dzinofanira kushandiswa nekuchenjerera. Mumakore achangopfuura, imwe pfungwa, iyo Fracture Limit Diagram (FFLD), yakakwezva kutarisisa kwevazhinji mainjiniya ekuumba. Mune iyi pfungwa, modhi yekukuvadza inoshandiswa kufanotaura kuumbwa kwepepa. Panyaya iyi, kusununguka kwegwara kunotanga kuiswa mukuongorora uye zvigumisiro zviri muchibvumirano chakanaka nemigumisiro yekuedza isina kuenzaniswa7,8,9. Kuumbwa kwepepa resimbi kunoenderana neanoverengeka paramita uye nhoroondo yekugadzirisa pepa, pamwe neiyo microstructure uye chikamu chesimbi10,11,12,13,14,15.
Saizi yekutsamira idambudziko kana uchifunga nezve microscopic maficha emasimbi. Zvave zvichiratidzwa kuti, munzvimbo diki deformation, kutsamira kwekuzunguza uye buckling zvivakwa zvinoenderana nehurefu hwechiyero chezvinhu16,17,18,19,20,21,22,23,24,25,26,27, 28,29,30. Mhedzisiro yehukuru hwezviyo pakuumbwa kwagara ichizivikanwa muindasitiri. Yamaguchi naMellor [31] vakadzidza mhedzisiro yehukuru hwezviyo uye ukobvu pane tensile zvivakwa zvesimbi mapepa vachishandisa theoretical analysis. Vachishandisa iyo Marciniac modhi, vanoshuma kuti pasi pe biaxial tensile kurodha, kudzikira kwereshiyo yehukobvu kune saizi yezviyo kunotungamira mukudzikira kwekusimba kwebepa. Zviyedzo zvabuda naWilson et al. 32 yakasimbisa kuti kuderedza ukobvu kusvika paavhareji yezviyo dhayamita (t/d) kwakaguma nekudzikira kwebiaxial extensibility yemarata esimbi emhando nhatu dzakasiyana. Vakagumisa kuti pat/d values isingasviki makumi maviri, inocherekedza deformation inhomogeneity uye mitsipa inonyanya kukanganiswa neiyo yega tsanga mukukora kwepepa. Ulvan naKoursaris33 vakadzidza mhedzisiro yehukuru hwezviyo pahuwandu hwemachinability ye304 uye 316 austenitic stainless steels. Vanoshuma kuti kuumbwa kwesimbi idzi hakukanganiswe nehukuru hwezviyo, asi shanduko diki muzvinhu zvinorema zvinogona kuoneka. Iko kuwedzera kwekukura kwezviyo kunotungamira mukuderera kwesimba hunhu hwemasimbi aya. Kupesvedzera kwe density ye dislocation pakuyerera kushushikana kwe nickel metals inoratidza kuti dislocation density inosarudza kuyerera kwesimbi, zvisinei nekukura kwezviyo34. Kudyidzana kwezviyo uye kutarisisa kwekutanga zvakare kune simba guru pakushanduka kwealuminium mameseji, ayo akaongororwa naBecker naPanchanadiswaran vachishandisa zviedzo uye modhi yekristaro plastiki35. Migumisiro yenhamba mukuongorora kwavo iri muchibvumirano chakanaka nekuedza, kunyange zvazvo mimwe mibairo yekuenzanisa ichitsauka kubva pakuedza nekuda kwemiganhu yemiganhu yakashandiswa. Nekudzidza crystal plasticity mapatani uye nekuedza kuona, akakungurutswa aruminiyamu mapepa anoratidza maitiro akasiyana36. Mhedzisiro yacho yakaratidza kuti kunyangwe kushushikana-kunetsekana kwemashizha akasiyana-siyana kwakada kufanana, pakanga paine misiyano yakakura mukuumbwa kwavo zvichienderana nehunhu hwekutanga. Amelirad naAssempour vakashandisa zviedzo uye CPFEM kuti vawane kushushikana-kurovera macurves eaustenitic Stainless steel sheets37. Mamiriro avo airatidza kuti kuwedzera kwekukura kwezviyo kunokwira kumusoro muFLD, kuumba inodzikamisa curve. Mukuwedzera, vanyori vakafanana vakatsvaga mhedzisiro yezviyo zvekutsvaga uye morphology pakuumbwa kwevoids 38.
Pamusoro pezviyo morphology uye kutaridzika mune austenitic simbi isina tsvina, iyo mamiriro emapatya uye yechipiri zvikamu zvakakoshawo. Twinning ndiyo nzira huru yekuomesa uye kuwedzera kureba muTWIP 39 simbi. Hwang40 yakashuma kuti kuumbwa kwemasimbi eTWIP kwaive kwakashata kunyangwe mhinduro yakakwana. Nekudaro, mhedzisiro ye deformation twinning pane kuumbwa kwe austenitic simbi mapepa haina kunyatso dzidza. Mishra et al. 41 yakadzidza austenitic simbi isina tsvina kuti ione twinning pasi pemakwara akasiyana-siyana ekutemesa. Vakaona kuti mapatya anogona kubva pakuora kwemamwe mapatya akabatwa uye chizvarwa chitsva chemapatya. Zvakaonekwa kuti mapatya makuru anoumba pasi pe biaxial tension. Mukuwedzera, zvakaonekwa kuti shanduko ye austenite mu \({\ alpha} ^{^{\ prime}}\) -martensite inobva pane nzira yekutambudzika. Hong et al. 42 yakaongorora mhedzisiro ye-strain-induced twinning uye martensite pane hydrogen embrittlement pamusoro pemhando yetembiricha mukusarudza laser kunyunguduka kwe316L austenitic simbi. Zvakaonekwa kuti, zvichienderana nekupisa, hydrogen inogona kukonzera kukundikana kana kuvandudza kuumbwa kwesimbi 316L. Shen et al. 43 yakayedza vhoriyamu ye deformation martensite pasi pekutakura kurodha pamareti akasiyana ekurodha. Yakawanikwa kuti kuwedzera kwekunetseka kwekunetseka kunowedzera huwandu hwechikamu chechikamu chemartensite.
Nzira dzeAI dzinoshandiswa musainzi uye tekinoroji nekuda kwekusiyana-siyana kwavo mukuenzanisira matambudziko akaomarara pasina kushandisa kune yepanyama uye masvomhu nheyo dzedambudziko44,45,46,47,48,49,50,51,52 Nhamba yeAI nzira dziri kuwedzera. . Moradi et al. 44 yakashandisa matekiniki ekudzidza muchina kukwenenzvera mamiriro emakemikari kugadzira akatsetseka nanosilica zvidimbu. Mamwe makemikari zvimiro zvakare zvinopesvedzera zvimiro zve nanoscale zvinhu, izvo zvakaongororwa mune dzakawanda zvinyorwa zvekutsvagisa53. Ce et al. 45 yakashandisa ANFIS kufanotaura kuumbwa kwesimbi kabhoni simbi simbi pasi pemamiriro akasiyana ekutenderera. Nekuda kwekutonhora kutenderedza, iyo dislocation density munyoro simbi yakawedzera zvakanyanya. Plain kabhoni simbi dzinosiyana kubva kune austenitic Stainless simbi mukuomesera uye kudzoreredza maitiro. Mune yakapfava kabhoni simbi, chikamu shanduko hazviitike musimbi microstructure. Pamusoro pechikamu chesimbi, iyo ductility, kutsemuka, machinability, nezvimwewo zvesimbi zvinokanganiswawo nezvimwe zvakati wandei ma microstructural maficha anoitika panguva dzakasiyana siyana dzekupisa kupisa, kutonhora kushanda, uye kuchembera54,55,56,57,58,59 ,60. , 61, 62. Munguva ichangopfuura, Chen et al. 63 yakadzidza mhedzisiro yekutonhora kukunguruka pachimiro che 304L simbi. Vakafunga nezve phenomenological observations chete mukuyedza bvunzo kuitira kudzidzisa neural network kufanotaura kuumbwa. Muchokwadi, kana ari austenitic simbi isina simbi, akati wandei zvinhu zvinosangana kudzikisa kusimba kwebepa. Lu et al.64 vakashandisa ANFIS kuti vaone kushanda kwezvikamu zvakasiyana-siyana pakugadzirisa gomba.
Sezvakakurukurwa muchidimbu muongororo iri pamusoro, mhedzisiro ye microstructure pane iyo chimiro dhizaini yakagamuchira kutariswa kushoma mumabhuku. Kune rimwe divi, akawanda microstructural maficha anofanirwa kuverengerwa. Naizvozvo, zvinenge zvisingaite kusanganisa ese mamicrostructural factor munzira dzekuongorora. Mupfungwa iyi, kushandisa njere dzekugadzira kunogona kubatsira. Panyaya iyi, chidzidzo ichi chinoongorora mhedzisiro yechimwe chikamu che microstructural factor, iko kuvapo kwekushushikana-induced martensite, pakuumbwa kwesimbi isina tsvina. Ichi chidzidzo chinosiyana kubva kune zvimwe zvidzidzo zveAI zvine chekuita nekuumbwa kwekuti chinotariswa chiri pane microstructural maficha kwete kungoyedza FLD macurves. Takatsvaga kuongorora kuumbwa kwe316 simbi ine akasiyana martensite zvirimo tichishandisa nzira dzekuedza uye dzenjere. Padanho rekutanga, 316 simbi ine ukobvu hwekutanga hwe 2 mm yakanyungudutswa uye inotonhora yakakungurutswa kune akasiyana makobvu. Zvino, uchishandisa metallographic control, iyo yehukama nzvimbo yemartensite yakayerwa. Iko kuumbwa kwemashizha akapetwa kwakagadziriswa kushandisa hemisphere burst test kuti uwane dhiyabhorosi yedhidhiyo (FLD). Iyo data yakagamuchirwa kubva kwaari yakazoshandiswa kudzidzisa uye kuyedza iyo yakagadzirwa neuro-fuzzy interference system (ANFIS). Mushure mekudzidziswa kweANFIS, fungidziro yeneural network inofananidzwa neseti nyowani yemhedzisiro yekuedza.
Iyo 316 austenitic Stainless steel sheet yakashandiswa muchidzidzo chazvino ine kemikari inoumbwa sezvakaratidzwa muTebhurari yekutanga uye kukora kwekutanga kwe1.5 mm. Anealing pa 1050 ° C kweawa imwe inoteverwa nekudzima kwemvura kuti ibvise kushushikana kwasara mupepa uye kuwana yunifomu microstructure.
Iyo microstructure ye austenitic simbi inogona kuratidzwa uchishandisa akati wandei etchants. Imwe yeakanakisa etchants ndeye 60% nitric acid mumvura yakasvibiswa, yakamisikidzwa pa1 VDC ye120 s38. Zvisinei, iyi etchant inongoratidzira miganhu yezviyo uye haigoni kuziva miganhu yezviyo kaviri, sezvinoratidzwa mumufananidzo 1a. Imwe etchant ndeye glycerol acetate, umo mapatya miganhu inogona kunyatsoonekwa, asi miganhu yezviyo haisi, sezvinoratidzwa mumufananidzo 1b. Mukuwedzera, mushure mekushandurwa kwemetastable austenitic phase mu \ ({\ alpha }^{^{\ prime}}\) -martensite phase inogona kuonekwa uchishandisa glycerol acetate etchant, iyo inofarira mukudzidza ikozvino.
Microstructure yesimbi plate 316 mushure mekuiswa, inoratidzwa neakasiyana etchants, (a) 200x, 60% \ ({\ mathrm{HNO}}_{3}\) mumvura yakasvibiswa pa 1.5 V ye 120 s, uye (b) 200x , glyceryl acetate.
Mashizha akavharirwa aichekwa kuita mapepa akafara masendimita 11 uye kureba kwemamita 1 ekukungurutsira. Iyo inotonhora inotenderedza chirimwa ine maviri symmetrical rolls ane dhayamita ye140 mm. Iyo inotonhora yekutenderedza maitiro inokonzera shanduko ye austenite kune deformation martensite mu 316 simbi isina tsvina. Kutsvaga reshiyo yechikamu chemartensite kune chikamu che austenite mushure mekutonhora kutenderera kuburikidza neakasiyana makubvu. Pamusoro pemuonde. 2 inoratidza muenzaniso weiyo microstructure yepepa simbi. Pamusoro pemuonde. 2a inoratidza mufananidzo wemetallographic wesampu yakatenderedzwa, sekutaridzirwa kubva kune nzira yakananga kune pepa. Pamusoro pemuonde. 2b uchishandisa ImageJ65 software, chikamu chemartensitic chinoratidzirwa mutema. Uchishandisa maturusi eiyi yakavhurika sosi software, nzvimbo yechikamu chemartensite inogona kuyerwa. Tafura 2 inoratidza yakatsanangurwa zvikamu zvemartensitic uye austenitic phases mushure mekukunguruka kune kwakasiyana kudzikiswa mukukora.
Microstructure ye 316 L sheet mushure mekukunguruka kusvika ku50% kuderedzwa kwehupamhi, inotaridzirwa perpendicular kune ndege yepepa, yakakwidziridzwa ka200, glycerol acetate.
Hukoshi hwakaunzwa muTable 2 hwakawanikwa neavhareji yakayerwa martensite zvikamu pamusoro pemifananidzo mitatu yakatorwa munzvimbo dzakasiyana pane imwechete metallographic specimen. Mukuwedzera, mumuonde. 3 inoratidza quadratic inokodzera macurves kuti unzwisise zvirinani maitiro ekutonhora kukunguruka pamartensite. Zvinogona kuoneka kuti kune kanenge mutsara kuwirirana pakati pechikamu chemartensite uye kuderera kweukobvu mumamiriro ekutonhora akakungurutswa. Nekudaro, hukama hwequadratic hunogona kumiririra zviri nani hukama uhu.
Musiyano muchikamu chemartensite sebasa rekudzikisa ukobvu panguva inotonhora yekutenderedzwa kweyakatanga kunyudzwa 316 simbi sheet.
Muganho wekuumbwa wakaongororwa zvinoenderana neyakajairwa maitiro uchishandisa hemisphere burst tests37,38,45,66. Pakazara, masampuli matanhatu akagadzirwa neaser cutting ane zviyero zvakaratidzwa muFig. 4a seti yezviyero zvekuedza. Kune yega yega chikamu chemartensite chikamu, matatu seti yemayedzo emuenzaniso akagadzirwa uye akaedzwa. Pamusoro pemuonde. 4b inoratidza akachekwa, akakwenenzverwa, uye akamakwa samples.
Nakazima kuumba miganhu saizi yemuenzaniso uye bhodhi rekucheka. (a) Dimensions, (b) Cheka uye wakamaka mienzaniso.
Muedzo wehemispherical punching wakaitwa uchishandisa hydraulic press ine kukurumidza kufamba kwe2 mm / s. Nzvimbo dzekusangana dzepunch uye shiti dzakanyatsozorwa kuti dzideredze mhedzisiro yekukwesha pakugadzira miganhu. Ramba uchiyedza kudzamara kudzikisira kwakakosha kana kutyora kwaonekwa mumuenzaniso. Pamusoro pemuonde. 5 inoratidza sampu yakaparadzwa muchishandiso uye sampuli mushure mekuyedzwa.
Muganho wekugadzira wakatemerwa uchishandisa hemispherical burst test, (a) test rig, (b) sample plate panguva yekuzorora muyedzo rig, (c) sampuli imwechete mushure mekuyedzwa.
Iyo neuro-fuzzy system yakagadziridzwa naJang67 chishandiso chakakodzera cheshizha kuumba muganho wekufanotaura. Iyi mhando yeartificial neural network inosanganisira pesvedzero yemaparamita ane tsananguro isina kujeka. Izvi zvinoreva kuti vanogona kuwana chero kukosha chaiko muminda yavo. Hunhu hwemhando iyi hunoiswazve kupatsanurwa zvichienderana nekukosha kwavo. Chikamu chimwe nechimwe chine mitemo yaro. Semuenzaniso, mutengo wetembiricha unogona kuva chero nhamba chaiyo, uye zvichienderana nekukosha kwayo, tembiricha inogona kuverengerwa seinotonhora, yepakati, inodziya, uye inopisa. Panyaya iyi, semuenzaniso, mutemo wekushisa kwakadzika mutemo "kupfeka jekete", uye mutemo wekudziya kwekushisa "T-shirt yakakwana". Mune fuzzy logic pachayo, iyo inobuda inoongororwa kuti ndeyechokwadi uye nekuvimbika. Iko kusanganiswa kweneural network masisitimu ane fuzzy logic inovimbisa kuti ANFIS ichapa mhedzisiro yakavimbika.
Mufananidzo 6 wakapihwa naJang67 unoratidza iri nyore neural fuzzy network. Sezvinoratidzwa, mambure anotora maviri ekuisa, muchidzidzo chedu chekuisa chikamu chemartensite muiyo microstructure uye kukosha kwediki strain. Padanho rekutanga rekuongorora, hunhu hwekuisa hune fuzzy uchishandisa zvisizvo mitemo uye mabasa enhengo (FC):
Kune \(i=1, 2\), sezvo mapindiro achifungidzirwa kuva nezvikamu zviviri zvetsananguro. Iyo MF inogona kutora chero yetatu, trapezoidal, Gaussian, kana chero imwe chimiro.
Zvichienderana nezvikamu \({A}_{i}\) uye \({B}_{i}\) uye maitiro avo eMF padanho rechipiri, mimwe mitemo inotorwa, sezvakaratidzwa mumufananidzo 7. Muizvi layer, mhedzisiro yezvakasiyana-siyana zvinosanganisirwa neimwe nzira. Pano, iyo inotevera mitemo inoshandiswa kusanganisa pesvedzero yechikamu chemartensite uye madiki strain maitiro:
Izvo zvabuda \({w}_{i}\) zveiyi layer zvinodaidzwa kuti ignition intensity. Aya masimba ekubatisa akajairwa muchikamu 3 zvichienderana nehukama hunotevera:
Muchikamu chechina, iyo Takagi uye Sugeno mitemo67,68 inosanganisirwa mukuverenga kuti ifunge nezve pesvedzero yekutanga kukosha kweiyo paramita yekuisa. Iyi layer ine hukama hunotevera:
Mhedzisiro \({f}_{i}\) inobatwa neyakajairwa tsika muzvikamu, izvo zvinopa mhedzisiro yekupedzisira, iyo huru warp kukosha:
apo \(NR\) inomiririra nhamba yemitemo. Basa reneural network pano ndere kushandisa iyo yemukati optimization algorithm kugadzirisa isingazivikanwe network paramita. Maparamita asingazivikanwe ndiwo anokonzeresa paramita \(\ kuruboshwe\{{p}_{i}, {q}_{i}, {r}_{i}\kurudyi\}\), uye maparameter ane chekuita neMF. anoonekwa seakajairika mhepo chimes chimiro basa:
Iwo maumbirwo emuganho madhayagiramu anoenderana neakawanda ma parameter, kubva kune kemikari kuumbwa kune deformation nhoroondo yepepa simbi. Mamwe ma paramita ari nyore kuongorora, anosanganisira tensile bvunzo paramita, nepo mamwe achida mamwe maitiro akaomarara senge metallography kana kusara kwekunetsekana kutsunga. Muzviitiko zvakawanda, zvinokurudzirwa kuita muedzo wekuomesera pabheji rega rega. Nekudaro, dzimwe nguva mimwe mibairo yebvunzo inogona kushandiswa kuenzanisa muganho wekuumba. Semuenzaniso, zvidzidzo zvakati wandei zvakashandisa tensile bvunzo mhinduro kuona sheet formability69,70,71,72. Zvimwe zvidzidzo zvaisanganisira mamwe ma parameter mukuongorora kwavo, senge gobvu rezviyo uye saizi31,73,74,75,76,77. Nekudaro, hazvina kubatsira computational kusanganisa ese anotenderwa paramita. Nokudaro, kushandiswa kwemhando dze ANFIS kunogona kuva nzira inonzwisisika yekugadzirisa nyaya idzi45,63.
Mune bepa rino, pesvedzero yezvinyorwa zvemartensite pane dhizaini yekuumba ye316 austenitic simbi sheet yakaongororwa. Panyaya iyi, seti yedata yakagadzirirwa uchishandisa bvunzo dzekuyedza. Iyo yakagadziridzwa sisitimu ine maviri ekuisa akasiyana: chikamu chemartensite chakayerwa mune metallographic bvunzo uye huwandu hwemadiki einjiniya strains. Mhedzisiro ndeye deformation huru yeinjiniya yekugadzira muganho curve. Kune marudzi matatu ezvikamu zvemartensitic: zvakanaka, zvepakati uye zvepamusoro zvikamu. Kuderera kunoreva kuti chikamu chemartensite chiri pasi pe10%. Pasi pemamiriro epakati, chikamu chemartensite chinobva pa10% kusvika ku20%. Hunhu hwepamusoro hwemartensite hunoonekwa sezvikamu zvinodarika makumi maviri%. Pamusoro pezvo, kudzvanya kwechipiri kune zvikamu zvitatu zvakasiyana pakati -5% ne5% padyo neakisi yakatwasuka, iyo inoshandiswa kuona FLD0. Positive and negative ranges ndiwo mamwe mapoka maviri.
Migumisiro yehemispherical test inoratidzwa muFIG. Nhamba yacho inoratidza 6 kuumba dhayagiramu yemiganhu, mashanu ayo ari FLD yemapepa akakungurutswa ega. Kupihwa nzvimbo yekuchengetedza uye yekumusoro muganho curve ichigadzira muganho curve (FLC). Nhamba yekupedzisira inofananidza ese FLCs. Sezvinogona kuonekwa kubva pamufananidzo wekupedzisira, kuwedzera kwechikamu chemartensite mu 316 austenitic steel kunoderedza kuumbwa kwesimbi yesimbi. Kune rimwe divi, kuwedzera chikamu chemartensite zvishoma nezvishoma chinoshandura iyo FLC kuita symmetrical curve nezve yakatwasuka axis. Mumagirafu maviri ekupedzisira, rutivi rworudyi rwegonyeti rwakakwira zvishoma kudarika ruboshwe, zvinoreva kuti kuumbwa kwe biaxial tension kwakakwirira kudarika muuniaxial tension. Uye zvakare, ese madiki uye makuru einjiniya strains pamberi pemitsipa inoderera nekuwedzera chikamu chemartensite.
316 ichigadzira muganhu. Kufurira kwechikamu chemartensite pane kuumbwa kwe austenitic simbi mashizha. (yakachengeteka poindi SF, yekugadzira muganho curve FLC, martensite M).
Iyo neural network yakadzidziswa pamaseti makumi matanhatu emhedzisiro yekuyedza ine martensite zvikamu zve7.8, 18.3 uye 28.7%. Iyo data seti ye15.4% martensite yakachengeterwa maitiro ekuongorora uye 25.6% yekuyedza maitiro. Iko kukanganisa mushure me150 epochs inenge 1.5%. Pamusoro pemuonde. 9 inoratidza kuwirirana pakati pekubuda chaiko (\({\epsilon }_{1}\), basa reinjiniya rekutanga) rinopihwa kudzidziswa uye kuyedzwa. Sezvauri kuona, iyo NFS yakadzidziswa inofanotaura \({\epsilon} _{1}\) zvinogutsa yezvikamu zvesimbi.
(a) Hukama pakati pezvakafanotaurwa uye chaidzo dzakakosha mushure mekudzidziswa, (b) Kukanganisa pakati pezvakafanotaurwa uye chaiko kukosha kweiyo huru mainjiniya mitoro paFLC panguva yekudzidziswa nekusimbisa.
Pane imwe nguva panguva yekudzidziswa, iyo ANFIS network inodzokororwa zvakare. Kuti uone izvi, kuongorora kwakafanana kunoitwa, kunonzi "cheki". Kana kukosha kwekukanganisa kwakatsauka kubva pakukosha kwekudzidziswa, network inotanga kudzidzira zvakare. Sezvinoratidzwa muMufananidzo 9b, nguva isati yasvika 150, mutsauko uripo pakati pekudzidzira nekusimbisa macurves mudiki, uye anotevera zvakada kufanana curve. Panguva ino, kukanganisa kwemaitiro ekugadzirisa kunotanga kutsauka kubva pakudzidza curve, chinova chiratidzo che ANFIS overfitting. Saka, iyo ANFIS network yeround 150 inochengetwa nekukanganisa kwe1.5%. Ipapo iyo FLC kufanotaura kwe ANFIS kunounzwa. Pamusoro pemuonde. 10 inoratidza akafanotaurwa uye chaiwo macurves emasampuri akasarudzwa anoshandiswa mukudzidziswa uye maitiro ekusimbisa. Sezvo iyo data kubva kune aya macurves yakashandiswa kudzidzisa network, hazvishamise kuona fungidziro yepedyo.
Chaiye kuyedza FLC uye ANFIS fungidziro curves pasi peakasiyana martensite content mamiriro. Aya ma curves anoshandiswa mukudzidzira maitiro.
Iyo ANFIS modhi haizive zvakaitika kumuenzaniso wekupedzisira. Naizvozvo, takaedza ANFIS yedu yakadzidziswa yeFLC nekuendesa sampuli nechikamu chemartensite che25.6%. Pamusoro pemuonde. 11 inoratidza iyo ANFIS FLC kufanotaura pamwe nekuyedza FLC. Iko kukanganisa kukuru pakati pehuwandu hunofungidzirwa uye kukosha kwekuedza ndeye 6.2%, iyo yakakwirira kudarika kukosha kwakafanotaurwa panguva yekudzidziswa nekusimbiswa. Nekudaro, kukanganisa uku kukanganisa kunoshivirira zvichienzaniswa nezvimwe zvidzidzo zvinofanotaura FLC theoretically37.
Muindasitiri, zvimiro zvinokanganisa kuumbwa zvinotsanangurwa muchimiro cherurimi. Semuyenzaniso, "zviyo zvakakora zvinoderedza kuumbwa" kana "kuwedzera kutonhora kushanda kunoderedza FLC". Kupinza kunetiweki yeANFIS padanho rekutanga inoiswa muzvikamu zvemitauro seyakaderera, yepakati nepamusoro. Pane mitemo yakasiyana yezvikamu zvakasiyana pane network. Naizvozvo, mumaindasitiri, rudzi urwu rwetiweki runogona kubatsira zvakanyanya maererano nekubatanidza zvinhu zvakati wandei mukutsanangura kwavo mitauro nekuongorora. Mune basa iri, takaedza kufunga nezvechimwe chezvinhu zvikuru zve microstructure ye austenitic stainless steels kuitira kushandisa zvingaita zve ANFIS. Huwandu hwekushushikana-induced martensite ye316 ndiyo yakananga mhedzisiro yekushanda kunotonhora kweiyi kuiswa. Kuburikidza nekuedza uye kuongororwa kweANFIS, zvakaonekwa kuti kuwedzera chikamu chemartensite mumhando iyi ye austenitic stainless simbi kunotungamirira kuderera kukuru muFLC yeplate 316, kuitira kuti kuwedzera chikamu chemartensite kubva pa7.8% kusvika ku28.7% kunoderedza FLD0 kubva pa0.35. kusvika ku0.1 zvichiteerana. Kune rumwe rutivi, iyo yakadzidziswa uye yakasimbiswa ANFIS network inogona kufanotaura FLC vachishandisa 80% ye data iripo yekuedza ine kukanganisa kwakanyanya kwe6.5%, iyo inogamuchirwa muganhu wekukanganisa uchienzaniswa nemamwe maitiro ezvinyorwa uye phenomenological relationships.
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Nguva yekutumira: Jun-08-2023