2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Hauv lwm lo lus, elastic deformation yog qhov hloov pauv ntawm cov khoom ntawm qhov kev ntxhov siab tsawg uas tuaj yeem rov qab tau tom qab kev ntxhov siab raug tshem tawm. … Txawm li cas los xij, qhov kev txav ntawm kev txav mus los tso cai rau cov atoms hauv cov dav hlau siv lead ua kom plam ib leeg ntawm qhov kev ntxhov siab qis dua.
Dab tsi ua rau kev txav txav txav?
Dislocations tuaj yeem txav tau yog tias cov atoms los ntawm ib qho ntawm cov dav hlau nyob ib puag ncig tawg lawv cov ntawv cog lus thiab rov qab nrog cov atoms ntawm ntug kev txiav. Nyob rau hauv qhov tseeb, ib nrab lub dav hlau ntawm atoms yog txav mus rau hauv cov lus teb rau shear stressing los ntawm kev rhuav thiab hloov kho ib txoj kab ntawm daim ntawv cog lus, ib tug (los yog ob peb) nyob rau hauv ib lub sij hawm.
Yuav ua li cas thaum lub sijhawm elastic deformation?
Elastic deformation koom nrog qhov kev ncua ib ntus lossis khoov ntawm daim ntawv cog lus ntawm atoms. Piv txwv li, thaum khoov ib daim ntawv hlau, cov ntawv cog lus yog khoov lossis ncab tsuas yog ob peb feem pua, tab sis cov atoms tsis plam ib leeg. Elastic deformation tuaj yeem tshwm sim los ntawm kev siv lub zog shear lossis nro / compression stress.
Vim li cas dislocations tseem ceeb thaum lub sij hawm yas deformation?
Dislocations ua lub luag haujlwm tseem ceeb hauv cov yas deformations ntawm cov ntaub ntawv crystalline. Lawv tiv thaiv kev sib tsoo ntawm kev sib txuas ntawm cov atoms hauv cov ntaub ntawv thiab ua rau qeeb deformation los ntawm kev ua ib qho- los ntawm ib qho kev tawg ntawm ib daim ntawv cog lus tau.
Qhov twg dislocation motiontshwm sim?
Dislocation motion thaum lub sij hawm yas deformation yog concentrated nyob rau hauv plam bands nyob rau hauv cov nplej.
Pom zoo:
Puas muaj qhov sib txawv ntawm lub sijhawm thiab lub sijhawm?
Whilst thiab while yog ob lo lus uas muaj lub ntsiab lus zoo ib yam-feem ntau. Tab sis koj tsis tuaj yeem siv ib txwm siv thaum siv sijhawm. Feem ntau, Brits siv thaum thiab Asmeskas siv thaum. Qhov no yog qhov sib txawv tseem ceeb. Qhov txawv ntawm thaum twg thiab thaum twg?
Lub sijhawm kuv lub sijhawm dawb lossis thaum kuv lub sijhawm dawb?
yog li, qhov no txhais tau tias "thaum kuv lub sijhawm dawb" tsis siv ntauthiab koj muab "hauv kuv lub sijhawm dawb" ntau dua nyob rau qhov kawg ntawm kab lus. Piv txwv li: Kuv tau taug kev tus dev thaum kuv lub sijhawm dawb.
Lub sijhawm nyob qhov twg ntawm lub sijhawm teem sijhawm?
kab kab rov tav ntawm lub rooj ntu ntu yog hu ua ntu ntu. Lub sijhawm nyob rau ntawm lub sijhawm nyob qhov twg? Ib lub sijhawm yog kab kab rov tav ntawm lub rooj ntu ntu. Muaj xya lub sij hawm nyob rau hauv lub sij hawm ntawm lub sij hawm, nrog txhua tus pib ntawm sab laug.
Puas muaj lub sijhawm siv sijhawm lossis cov saw hlau sijhawm?
Lub sij hawm saws ua haujlwm tib yam li a sij hawm sivua. … Lub sij hawm saws nyob rau hauv lub cav thiab tau txais lubrication los ntawm lub cav roj thiab yuav kav ntev, thaum lub sij hawm siv txoj siv sia nyob sab nraum lub cav thiab nyiam qhuav tawm thiab tawg.
Vim li cas qhov tseem ceeb ntawm qhov muaj zog thiab qhov tsis muaj zog yog qhov tseem ceeb?
Nws yog ib qho tseem ceeb rau qhov tseem ceeb ntawm qhov ua tau zoo thiab qhov tsis muaj zog vim qhov no pab lub tuam txhab txiav txim siab txog thaj chaw uas lawv yuav tsum tau txhim kho ntxiv rau thaj chaw uas lawv ua tau zoo hauv. Vim li cas lub zog thiab qhov tsis muaj zog tseem ceeb?
