Video: Dab tsi ntawm kev ntxhov siab yog compression?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Compression yog a hom kev ntxhov siab uas ua rau cov pob zeb sib tsoo lossis sib tsoo. Nws tsom rau qhov chaw ntawm pob zeb thiab tuaj yeem ua rau kab rov tav lossis ntsug. Hauv kab rov tav compression kev nyuaj siab , lub crust yuav thicken los yog luv.
Ib yam li ntawd, tib neeg nug, compressional stress yog dab tsi?
compressional kev nyuaj siab . Cov kev ntxhov siab uas nyem ib yam dab tsi. Nws yog tus kev ntxhov siab Cheebtsam perpendicular mus rau ib tug muab nto, xws li ib tug txhaum lub dav hlau, uas tshwm sim los ntawm lub zog siv perpendicular mus rau saum npoo los yog los ntawm tej thaj chaw deb rog kis los ntawm cov pob zeb nyob ib ncig ntawm.
Ib tug kuj nug, 3 hom kev ntxhov siab yog dab tsi? Peb hom kev ntxhov siab tseem ceeb yog ib yam ntawm peb hom phaj ciam teb: compression ntawm convergent ciam teb, nruj ntawm divergent ciam teb, thiab txiav ntawm kev hloov ciam teb. Qhov twg pob zeb deform plastically, lawv nyiam quav. Brittle deformation ua rau tawg thiab faults.
Tom qab ntawd, hom kev ntxhov siab yog compression thiab hom phaj ciam teb no pom?
Tension yog hom loj ntawm kev ntxhov siab pom nyob rau ntawm divergent phaj ciam teb. Thaum cov quab yuam ua tib yam rau ib leeg tab sis nyob rau hauv cov lus taw qhia, qhov kev ntxhov siab hu ua txiav (Daim duab 7.2). Shear kev nyuaj siab ua rau ob lub dav hlau ntawm cov khoom xaub dhau ib leeg. Qhov no yog qhov kev ntxhov siab tshaj plaws pom nyob rau ntawm kev hloov phaj ciam teb.
Hom kev ntxhov siab twg yog shearing?
Cov pob zeb uas rub tawm yog nyob rau hauv qhov nro. Pob zeb nyob rau hauv nro lengthen los yog tawg. Tension yog qhov loj hom kev ntxhov siab ntawm divergent phaj ciam teb. Thaum lub zog sib npaug tab sis txav mus rau qhov sib txawv, cov kev ntxhov siab hu ua txiav (Daim duab hauv qab no).
Pom zoo:
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