Titanium hlau composite phaj tuaj yeem ua ke tag nrho cov kev ua haujlwm zoo corrosion thiab thermal stability ntawm titanium hlau, nrog rau lub zog siab ntawm cov qauv hlau, yog li sib txuas cov txiaj ntsig ntawm cladding thiab substrate hlau, thiab muaj cov ntawv thov zoo engineering. Titanium steel composite phaj feem ntau ua tiav los ntawm kev tawg lossis dov cov txheej txheem. Cov khoom siv hluav taws xob ntawm cov phaj sib xyaw yog cuam tshuam los ntawm ntau yam xws li cov khoom siv kho tshuab ntawm cladding thiab substrate, cov khoom sib txuas sib txuas, thiab cov sib xyaw ua ke, uas feem ntau xav tau kev tshawb fawb tshwj xeeb.
Tam sim no, cov kws tshawb fawb tau tshawb fawb txog cov cuab yeej cuab tam ntawm titanium hlau sib xyaw daim hlau los ntawm ntau qhov kev xav. Xie et al. tau kawm txog microstructure thiab mechanical zog ntawm tawg kub-kuav los tiag daim hlau uas muaj ntshiab Ti-X65 pipeline steel siv metallographic soj ntsuam thiab mechanical xeem txoj kev. Cov txiaj ntsig tau pom tias qhov sib cuam tshuam morphology ncaj qha cuam tshuam rau kev sib txuas zoo ntawm titanium txheej thiab cov phaj hlau. Liu et al. tau kawm txog cov cuab yeej cuab tam ntawm titanium steel composite daim hlau los ntawm kev sim thiab pom qhov sib cuam tshuam morphology ntawm daim hlau. Cov txiaj ntsig tau pom tias lub zog shear ntawm wavy interfaces siab dua li ntawm cov kev sib txuas ncaj nraim. Ban Huiyong et al. [4] tau ua monotonic tensile, dabtsi yog khoov, thiab shear xeem ntawm TA2 / Q235B titanium steel composite daim hlau, thiab cov txiaj ntsig tau pom tias qhov sib piv ntawm titanium steel puas daim hlau ncaj qha cuam tshuam rau lawv txoj kev ntxhov siab-txoj kev nkhaus thiab cov ntsuas kev ua haujlwm. Ntxiv nrog rau kev ua haujlwm zoo li qub, kev ua haujlwm zoo ntawm titanium steel composite daim hlau nyob rau hauv cyclic loading kuj tseem ceeb heev. Txawm li cas los xij, raws li cov ntaub ntawv muaj nyob rau hauv pej xeem, tam sim no tsis muaj qhov kev sim ua tau zoo ntawm hysteresis kev ua tau zoo ntawm titanium steel puas daim hlau nyob rau hauv cyclic loading ob leeg hauv tsev thiab txawv teb chaws.
Txhawm rau tshawb xyuas hysteresis kev sib raug zoo ntawm titanium steel composite daim hlau nyob rau hauv cyclic loading, monotonic tensile tests thiab loading tests nyob rau hauv rau ntau yam cyclic loading regimes tau ua kom tau lawv cov zoo li qub thiab hysteresis zog. Ramberg Osgood qhia yog siv los ua kom haum rau qhov kev sim pob txha nkhaus, thiab cov qauv siv yas siv los piav txog nws qhov kev ua tau zoo hysteresis. Cov khoom tsis muaj nyob rau hauv tus qauv yog calibrated raws li qhov kev sim. Thaum kawg, lub finite element software ABAQUS tau siv los ua tus lej simulate cov txheej txheem ntsuas kev sib tw.
Lub titanium steel composite phaj siv nyob rau hauv qhov kev sim yog tsim los ntawm TA2 titanium hlau thiab Q235 hlau uas tau raug explosively compounded. Lub nominal thickness ntawm titanium hlau composite phaj muaj xws li plaub hom: 11.2mm, 13.2mm, 15.2mm, thiab 17.2mm. Lub nominal thickness ntawm titanium txheej yog 1.2 hli, tsim plaub sib txawv sib piv. Qhov luaj li cas ntawm cov qauv tau tsim raws li cov lus qhia [4] thiab [6], raws li qhia hauv daim duab 1. Cov seem clamping thiab cov seem sib npaug ntawm txhua qhov qauv tau hloov pauv los ntawm ib lub voj voog ncig nrog lub vojvoog ntawm 50mm. Tag nrho ntawm 28 tus qauv tau tsim, suav nrog 4 monotonic loading specimens thiab 24 cyclic loading specimens, tag nrho cov uas tau ua tiav siv hlau txiav raws li cov kev taw qhia dov ntawm titanium steel composite daim hlau.
Txhawm rau tiv thaiv cov qauv ntawm buckling nyob rau hauv compression ntxov dhau thaum lub sij hawm thauj khoom thiab tau txais ib qho tag nrho hysteresis nkhaus, qhov chaw thau khoom yog txiav txim siab raws li lub hauv paus ntsiab lus ntawm compression tsawg thiab maj mam nce. Rau qhov sib txawv cyclic loading regimes tau tsim (Daim duab 2), tag nrho cov uas tau thauj khoom raws li kev hloov pauv. Ntawm lawv, loading regimes L1, L4, thiab L5 yog sib npaug incremental loading, thaum L2, L3, thiab L6 yog sib npaug amplitude loading. Chaw thau khoom tswj hwm L4 thiab L5 tuaj yeem ncua lossis txawm tias tsis txhob buckling tshwm sim los ntawm compression ntawm cov qauv, uas ua rau muaj qhov nkhaus hysteresis.
