Kev ntxhov siab yog lub zog siv rau cov khoom siv, muab faib los ntawm cov khoom siv hla ntu ntu. Kev lim dej yog qhov deformation lossis hloov chaw ntawm cov khoom uas tshwm sim los ntawm kev siv kev ntxhov siab . Lus Cim: Cov khoom hloov qhov ntev (L – L0) yog qee zaum sawv cev ua δ.
Dab tsi yog thawj qhov kev ntxhov siab thiab kev nyuaj siab?
Yog li, Tam sim no peb txhais saum toj no; Ntxhais=Force/Area and Strain=Change in length/original length. … Yog li qhov saum toj no Stress-Strain nkhaus tuaj yeem suav tias yog Force vs deformation nkhaus. Qhov no txhais tau tias Force yog tsim lub deformation. Yog li los ntawm cov kev sib tham saum toj no, nws yog qhov tseeb tias Kev Nyuaj Siab los ua ntej, thiab tom qab ntawd Kev Nyuaj Siab yog tsim.
Kev sib raug zoo ntawm kev ntxhov siab thiab kev nyuaj siab yog dab tsi?
Ntawm no kev ntxhov siab thiab hom kab mob yog qhov sib npaug rau ib leegpiv txwv li, raws li kev ntxhov siab nce, strain kuj nce proportionately. Upto OL cov hlau yuav ua tau tag nrho elastic piv txwv li, yog hais tias kev ntxhov siab yog tshem tawm strain txo mus rau xoom. Yog li lub zog cuam tshuam nrog qhov kev ntxhov siab no yog qhov txwv elastic.
Kev ntxhov siab thiab Young's modulus yog dab tsi?
Tus Hluas's modulus (E) yog cov cuab yeej ntawm cov khoom uas qhia peb yooj yim npaum li cas nws tuaj yeem ncab thiab deform thiab txhais tau tias yog piv ntawm tensile stress (σ) rau tensile strain (ε)Qhov twg kev ntxhov siab yog tus nqi ntawm lub zog siv rau ib cheeb tsam (σ=F / A) thiab strain yog txuas ntxiv rau ib chav tsev ntev (ε=dl / l).
K kev ntxhov siab thiab kev nyuaj siab yog dab tsi?
Kev sib raug zoo ntawm lub zog tensile (TS), lub lub zog tas li(K) thiab lub zog tawv tawv (n) yog muab los ntawm TS=K(n / e) ^n. Ntawm no e yog hais txog lub hauv paus ntawm ntuj logarithm uas kwv yees li 2.7183.
