Qhov sib txawv tseem ceeb ntawm cov yas thiab pseudoplastic ntws yog cov yas ntws piav qhia txog tus cwj pwm ntws ntawm cov khoom siv tom qab siv kev ntxhov siab, qhov pseudoplastic flow qhia tus cwj pwm ntawm ob qho tib si Newtonian ntws thiab cov yas ntws..
Plastic flow yog ib qho tshuaj phenomenon uas piav txog tus cwj pwm ntws ntawm cov khoom tom qab siv kev ntxhov siab uas nce mus txog qhov tseem ceeb. Pseudoplastic flow exhibits tus cwj pwm ntawm ob qho tib si Newtonian flow thiab yas ntws. Newtonian ntws ntawm cov kua dej piav qhia txog cov khoom ntawm cov kev ntxhov siab uas tshwm sim los ntawm cov dej ntws ntawm txhua qhov chaw uas yog linearly correlated rau hauv zos strain rate.
Plastic Flow yog dab tsi?
Plastic flow yog ib qho tshuaj phenomenon uas piav txog tus cwj pwm ntws ntawm cov khoom tom qab siv kev ntxhov siab uas nce mus txog qhov tseem ceeb. Nws tseem hu ua yas deformation. Nws yog qhov txawv txav mus tas li uas tshwm sim yog tias peb raug cov khoom siv rau tensile, compressive, dabtsi yog khoov, los yog torsion stresses, uas zoo li ntau tshaj nws cov yield zog. Nws kuj tuaj yeem ua rau cov khoom elongate, compress, buckle, khoov, lossis qee zaum twist.
Daim duab 01: Yas Flow
Yas ntws tuaj yeem tshwm sim hauv ntau cov txheej txheem hlau xws li dov, nias, forging, thiab lwm yam. Ntxiv mus, peb tuaj yeem pom qhov no hauv qee cov txheej txheem geological. Peb tuaj yeem piav qhia txog cov yas ntws los ntawm kev siv cov dej ntws plasticity.
Flow plasticity theory yog ib txoj kev xav kho tshuab uas muaj txiaj ntsig zoo los piav qhia txog cov cwj pwm yas ntawm cov khoom siv. Ntxiv mus, txoj kev xav ntawm ntws plasticity tuaj yeem tshwm sim los ntawm kev xav; muaj txoj cai ntws peb tuaj yeem siv los txiav txim siab txog cov yas deformation uas tshwm sim hauv cov khoom. Feem ntau, nyob rau hauv ib tug flow plasticity txoj kev xav, peb xav hais tias tag nrho cov strain nyob rau hauv lub cev muaj peev xwm undergo decomposition additively rau hauv ib feem yas thiab ib tug elastic ib feem. Ntawm lawv, qhov elastic ib feem tuaj yeem raug suav los ntawm cov qauv linear elastic lossis hyperelastic constitutive qauv.
Pseudoplastic Flow yog dab tsi?
Pseudoplastic flow qhia tus cwj pwm ntawm ob qho tib si Newtonian ntws thiab cov yas ntws. Nyob rau hauv tus txheej txheem ntawm pseudoplastic ntws, cov kua nyiam ntws raws li yas ntawm siab shear tus nqi. Txawm li cas los xij, nws tsis muaj qhov taw qhia tawm, thiab yog li ntawd, nws yuav ib txwm ntws hauv qab kev ntxhov siab zoo ib yam li cov kua Newtonian.
Ib qho piv txwv ntawm tus cwj pwm pseudoplastic yog ntshav. Tsis tas li ntawd, cov kua dej dilatant uas muaj cov xuab zeb hauv dej yog lwm qhov piv txwv ntawm pseudoplastic ntws. Tsis tas li ntawd, thaum lub viscosity txo qis thaum lub zog shear nce, peb hu nws pseudoplastic kua.
Daim duab 02: Pseudoplastic Behavior hauv daim duab
Feem ntau, pseudoplastic ntws tshwm sim nyob rau hauv sib piv rau Bingham kua. Pseudoplastic kua tuaj yeem nce viscosity raws li kev siv dag zog. Piv txwv li, cornstarch tov hauv dej coj zoo li dej ntshiab thaum tsis muaj lwm yam quab yuam siv.
Qhov txawv ntawm Yas thiab Pseudoplastic Flow yog dab tsi?
Plastic flow yog ib qho tshuaj phenomenon uas piav txog tus cwj pwm ntws ntawm cov khoom tom qab siv kev ntxhov siab uas nce mus txog qhov tseem ceeb. Pseudoplastic flow exhibits tus cwj pwm ntawm ob qho tib si Newtonian flow thiab yas ntws. Qhov sib txawv tseem ceeb ntawm cov yas thiab pseudoplastic ntws yog tias cov yas ntws piav qhia txog tus cwj pwm ntws ntawm cov khoom siv tom qab siv kev ntxhov siab, thaum pseudoplastic flow qhia tus cwj pwm ntawm ob qho tib si Newtonian ntws thiab cov yas ntws. Khoov ib daim hlau lossis pounding rau hauv cov duab tshiab yog piv txwv ntawm cov yas ntws, hos cov ntshav, xuab zeb hauv dej, zib ntab, thiab lwm yam yog cov piv txwv ntawm pseudoplastic flow.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm cov yas thiab pseudoplastic ntws hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Yas vs Pseudoplastic Flow
Plastic thiab pseudoplastic tus cwj pwm yog ob txheej txheem rheological hais txog cov khoom sib txawv. Qhov sib txawv tseem ceeb ntawm cov yas thiab pseudoplastic ntws yog tias cov dej ntws tau piav qhia txog tus cwj pwm ntws ntawm cov khoom siv tom qab siv kev ntxhov siab, thaum pseudoplastic ntws qhia tus cwj pwm ntawm ob qho tib si Newtonian ntws thiab cov yas ntws.
