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.
