Qhov sib txawv tseem ceeb ntawm cov khoom tawg thiab tawg yog qhov tawg ntawm qhov deformation tshwm sim ntawm tus nqi qis, qhov nkig deformation tshwm sim ntawm tus nqi siab.
Thaum ua kom muaj kev ntxhov siab ntxiv rau ntawm ib lub pob zeb tshwj xeeb, lub pob zeb dhau los ntawm peb hom kev ua tiav ntawm kev deformation. Lawv yog cov elastic deformation, ductile deformation, thiab brittle deformation. Elastic deformation yog ib qho rov qab deformation, ductile deformation yog irreversible qhov twg brittle deformation ua rau lub pob zeb tawg.
YDuctile Deformation yog dab tsi?
Ductile deformation hauv ntiaj teb kev tshawb fawb yog tsim cov loj, qhib folds nyob rau hauv cov sediments los yog pob zeb nyob rau hauv pem hauv ntej ntawm ib tug advancing glacier uas yuav loj hlob mus rau hauv overfolds. Qhov no tuaj yeem ua rau cov sediments lossis pob zeb pib nkag mus rau sab hauv vim yog cov dej khov txuas ntxiv mus. Hom pob zeb deformation no tsis tshua muaj pob zeb-hom dependent. Qhov no yog vim hais tias txawm me me heev variations ntawm ntxhia muaj pes tsawg leeg nyob rau hauv lub pob zeb yuav ua tau nyob rau hauv heev txawv ductile zog. Tsis tas li ntawd, cov txheej txheem ntawm ductile deformation yog ntau yam.
Ntxiv mus, cov kab mob deformation qhia txog cov kev hloov pauv ntawm cov khoom siv los ntawm kev khoov lossis ntws thaum lub sijhawm cov ntaub ntawv tshuaj lom neeg tuaj yeem tawg tab sis tom qab hloov pauv mus rau cov ntawv cog lus tshiab. Qhov no yuav tsum tau muaj kev ntxhov siab uas dhau ntawm qhov pib elastic thiab tus nqi deformation uas qeeb txaus kom haum rau ntau yam yam tsis tau rhuav tshem cov khoom. Lub pob zeb uas tau ntsib cov kab deformation feem ntau muaj cov khoom xws li quav, foliation, thiab kab. Txawm li cas los xij, foliation thiab lineation kuj tuaj yeem pom tom qab brittle deformation.
Ntau lub luag haujlwm yog lub luag haujlwm rau kev ua kom lub cev tsis zoo, suav nrog kev sib kis kab mob, kev txav mus los, kev sib tsoo / kinking, grain ciam swb, thiab lub cev sib hloov. Diffusion creep tshwm sim thaum deformation ntawm cov khoom siv lead ua tshwm sim los ntawm kev tsiv teb tsaws ntawm cov atoms thiab cov chaw ua haujlwm thoob plaws hauv cov siv lead ua lattice. Cov txheej txheem no yog tsav los ntawm cov tshuaj muaj peev xwm gradient tawm los ntawm kev ntxhov siab sab nraud.
Diffusion creep yog cov txheej txheem ntau tshaj plaws ntawm kev nkag mus; Nws muaj peb yam subcategories ntawm diffusion creep: Nabarro-Herring creep, Coble creep, thiab dissolution-precipitation creep. Ntawm peb qhov no, thawj ob daim ntawv qhia txog kev sib koom ua ke ntawm cov atoms thiab qhov chaw nyob hauv cov khoom siv crystalline. Qhov thib peb txoj kev tseem hu ua siab daws creep los yog ntub diffusion creep, thiab nws yuav tsum tau ib zaj duab xis ntawm cov kua uas ua raws li ib tug cab kuj ntawm crystalline khoom. Ntawm no, tus solute diffuses uas tsis yog-conservatively los ntawm cov kua los ntawm qhov chaw ntawm dissolution mus nag lossis daus raws lis ciam teb.
Brittle Deformation yog dab tsi?
Brittle deformation yog hom deformation uas tshwm sim los ntawm kev tawg thiab ua txhaum. Lo lus no yog hais txog kev rhuav tshem cov tshuaj tiv thaiv kab mob uas tsis tau tom qab hloov kho. Yog li ntawd, qhov tshwm sim ntawm brittle deformation yog qhov zoo sib xws rau cov kev soj ntsuam hauv cov phaj tawg xws li pob txha. Lub nkig deformation ntawm ib lub pob zeb tshwj xeeb yog nyob ntawm rheology ntawm pob zeb. Lub nkig deformation ntawm lub pob zeb tshwm sim ntawm tus nqi siab.
Thaum lub sijhawm tawg, pob zeb feem ntau pom muaj cov nyhuv pseudoviscous ua ntej qhov tsis ua haujlwm uas tau cuam tshuam nrog lub zog nce ntxiv nrog rau qhov nce ntxiv. Peb tuaj yeem pom qhov cuam tshuam no yooj yim hauv kev lag luam mining. Peb hu qhov no ua static fatigue; ib tug ncej los yog lwm yam load-bearing qauv tsis ua hauj lwm tom qab ib co sij hawm ntawm lub sij hawm nyob rau hauv tas li load.
Qhov txawv ntawm Ductile thiab Brittle Deformation yog dab tsi?
Peb hom deformations tuaj yeem tshwm sim hauv pob zeb: elastic deformation, ductile deformation thiab brittle deformation. Qhov sib txawv tseem ceeb ntawm cov ductile thiab brittle deformation yog cov ductile deformation tshwm sim ntawm tus nqi qis, thaum brittle deformation tshwm sim ntawm cov kab mob siab. Tsis tas li ntawd, cov kab deformation yog irreversible tab sis tsis tawg lub pob zeb thaum brittle deformation yog irreversible thiab kuj ua rau lub pob zeb tawg. Yog li ntawd, qhov no yog qhov sib txawv tseem ceeb ntawm cov khoom tawg thiab tawg deformation.
Nyob hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm ductile thiab brittle deformation nyob rau hauv daim ntawv tabular.
Summary – Ductile vs Brittle Deformation
Peb hom deformations uas tuaj yeem tshwm sim hauv pob zeb: elastic deformation, ductile deformation thiab brittle deformation. Qhov sib txawv tseem ceeb ntawm cov ductile thiab brittle deformation yog cov ductile deformation tshwm sim ntawm tus nqi qis, whereas brittle deformation tshwm sim ntawm tus nqi siab.
