Necking tshwm sim thaum qhov tsis ruaj khov hauv cov khoom ua rau nws ntu ntu kom txo qis los ntawm kev faib ua feem ntau dua li cov tawv tawv tawv thaum tab tom deformation tensile.
cheeb tsam caj dab nyob qhov twg hauv txoj kev ntxhov siab nkhaus?
Lub cheeb tsam tawv tawv uas tshwm sim thaum cov qauv raug rau qhov kev ntxhov siab ntau tshaj plaws nws tuaj yeem txhawb nqa (tseem hu ua lub zog tensile kawg lossis UTS). Thaj chaw caj dab uas caj dab daim ntawv. Lub sijhawm no, qhov kev ntxhov siab uas cov khoom siv tuaj yeem txhawb nqa tau qis zuj zus thaum nws mus txog qhov tawg.
caj dab pib qhov twg?
Necking pib ntawm qhov taw tes tensile, lossis qhov kawg ntawm kev ntxhov siab. Lub caj dab yog ib feem ntawm cov qauv uas caj dab tshwm sim. Tom qab tus nqi siab tshaj plaws ntawm ib qho khoom thauj, P, tau mus txog, thaj tsam ntawm qhov nruab nrab ntawm cov qauv yuav pib txo qis, vim tias muaj kev tsis sib haum xeeb hauv zos.
Yuav ua li cas yog lub caj dab ntawm cov khoom siv ductile hauv daim duab qhia kev ntxhov siab?
Tom qab mus txog qhov kawg ntawm kev ntxhov siab, cov qauv ntawm cov khoom siv ductile yuav nthuav tawm lub caj dab, uas nyob rau hauv qhov chaw hla ntu hauv cheeb tsam hauv cheeb tsam ntawm cov qauv txo qis. F: Qhov no yog qhov tawg taw teslossis qhov tawg, uas yog qhov chaw uas cov khoom tsis ua haujlwm thiab sib cais ua ob daim.
Puas caj dab tshwm sim ntawm lub zog tensile kawg?
Rau cov ntaub ntawv ductile theUTS feem ntau tsis coincide nrog rupture vim hais tias cov khoom muaj peev xwm hloov cov duab kom haum raws li hom. Cov duab hloov, lossis cov yas deformation, raug txwv vim tias qhov ntim ntawm cov khoom yog tas li, yog li vim li cas caj dab tshwm sim.
