Young Modulus vs Tensile Strength
Young's modulus thiab tensile zog yog ob yam khoom ntawm cov khoom khib nyiab. Cov khoom no ua lub luag haujlwm tseem ceeb hauv cov haujlwm xws li cov khoom siv science, mechanical engineering, kev tsim kho thiab physics. Nws yog ib qho tseem ceeb heev uas yuav tsum muaj kev nkag siab zoo ntawm cov tswv yim no kom ua tau zoo hauv cov haujlwm no. Hauv tsab xov xwm no, peb yuav tham txog dab tsi Young's modulus thiab tensile lub zog yog, lawv cov ntsiab lus, kev siv ntawm cov tub ntxhais hluas lub modulus thiab tensile lub zog, qhov zoo sib xws ntawm ob thiab thaum kawg qhov txawv ntawm Young's modulus thiab tensile zog.
Young's Modulus
Young's modulus yog ib qho khoom muaj txiaj ntsig zoo ntawm cov teeb meem thiab siv los ua tus cwj pwm nruj ntawm cov khoom. Young's modulus yog qhov sib piv ntawm qhov siab ntawm cov khoom (kev ntxhov siab) rau cov khoom siv. Txij li cov kab mob tsis muaj qhov dav, cov units ntawm Young's modulus yog sib npaug rau cov chav nyob ntawm qhov siab, uas yog Newton ib square meter. Rau qee cov ntaub ntawv, Young's modulus yog tas li ntawm qee qhov kev ntxhov siab. Cov ntaub ntawv no ua raws li Hooke txoj cai thiab hais tias yog cov ntaub ntawv linear. Cov ntaub ntawv, uas tsis muaj qhov tsis tu ncua Young's modulus, yog lub npe hu ua cov ntaub ntawv tsis-linear. Nws yuav tsum to taub kom meej tias Young's modulus yog ib yam khoom ntawm cov khoom, tsis yog khoom. Cov khoom sib txawv ua los ntawm cov khoom siv tib yam yuav muaj tib lub Young's modulus. Tus Young's modulus muaj npe tom qab tus kws kho mob Thomas Young. Young's modulus kuj tuaj yeem txhais tau, raws li lub siab xav tau kom muaj chav nyob ntawm cov khoom siv. Txawm hais tias, cov chav nyob ntawm Young's modulus yog Pascal, nws tsis yog siv dav. Cov chav loj xws li Mega Pascal lossis Giga Pascal yog cov chav muaj txiaj ntsig.
Tensile Strength
Tensile lub zog yog cov lus siv rau qhov kawg tensile zog (UTS). Thaum cov khoom raug rub nws stretches. Lub zog, uas yog ncab cov khoom, yog hu ua kev ntxhov siab. Lub zog tensile kawg yog qhov siab tshaj plaws ntawm cov khoom siv tuaj yeem tiv taus ua ntej caj dab. Necking yog qhov xwm txheej ntawm ntu ntu ntawm cov qauv ua qhov me me. Qhov no tuaj yeem piav qhia los ntawm kev siv cov ntawv cog lus sib txuas ntawm cov qauv. Thaum siv cov kev ntxhov siab, cov kev cuam tshuam ntawm intermolecular quab yuam ua rau cov kev taw qhia sib txawv, kom cov qauv zoo li qub. Thaum qhov kev ntxhov siab raug tso tawm, tus qauv tag nrho lossis ib nrab rov qab los rau nws lub xeev thawj zaug. Thaum lub caj dab pib, cov molecules yog ncab sib nrug kom cov intermolecular rog tsis txaus los tuav lawv ua ke. Qhov no ua rau muaj kev ntxhov siab vim muaj kev ntxhov siab thiab caj dab tshwm sim. Tensile lub zog kuj yog cov khoom ntawm cov khoom siv. Qhov no yog ntsuas hauv Pascal, tab sis chav loj xws li Mega Pascal yog siv rau hauv cov xwm txheej zoo.
Qhov txawv ntawm Young's Modulus thiab Tensile Strength yog dab tsi?
• Young's modulus yog ib qho kev ntsuas ntawm cov lus teb ntawm cov khoom rau kev ntxhov siab. Qhov kawg tensile lub zog yog qhov ntsuas ntawm qhov kev ntxhov siab npaum li cas cov khoom tuaj yeem tiv taus.
• Tus Young's modulus yog qhov sib txawv rau cov ntaub ntawv uas tsis yog kab, uas txawv nrog kev ntxhov siab. Lub zog tensile yog tus nqi ruaj khov rau cov khoom siv.
