Qhov txawv ntawm proportional limit thiab elastic limit yog dab tsi?
Qhov txawv ntawm proportional limit thiab elastic limit yog dab tsi?

Video: Qhov txawv ntawm proportional limit thiab elastic limit yog dab tsi?

Video: Qhov txawv ntawm proportional limit thiab elastic limit yog dab tsi?
Video: qhov ncauj qhia tau neeg Tus YAM NTXWV thiab TXOJ HMOO 2024, Kaum ib hlis
Anonim

Cov proportional txwv yog lub ntsiab lus ntawm thestress-strain nkhaus qhov twg qhov kev ntxhov siab hauv a cov ntaub ntawv tsis yog linearly proportional rau strain. Cov elastic txwv yog lub ntsiab lus ntawm qhov kev ntxhov siab-txhim kho qhov nkhaus ntawm cov khoom siv yuav tsis rov qab los rau nws cov duab qub thaum cov khoom tshem tawm, vim yog cov yas deformation.

Ib yam li ntawd, tej zaum koj yuav nug, dab tsi yog proportional limit?

17.5.1 Kev txwv tsawg Cov proportional txwv yog qhov siab tshaj plaws uas cov khoom siv kho hniav txhawb nqa yam tsis muaj kev sib txawv, lossis qhov loj ntawm elastic kev ntxhov siab saum cov yas deformation tshwm sim. Yog li, cov proportional txwv txhais tau tias yog qhov kev nyuaj siab tshaj plaws uas qhov kev ntxhov siab-txoj kev nkhaus yog qhov ncaj.

Tsis tas li ntawd, yuav ua li cas tshwm sim yog tias qhov elastic txwv ntawm lub caij nplooj ntoos hlav qhov twg tshaj? Thaum ib yam khoom tau dhau mus lawm nws elastic txwv , nws deformation yog hais tias yuav inelastic. Qhov siab dua caij nplooj ntoos hlav tsis tu ncua, lub stiffer caij nplooj ntoos hlav . Thaum twg ib elastic khoom yog stretched tshaj nws txwv ofproportionality, qhov khoom ua tsis rov qab mus rau nws originallength thaum lub zog raug tshem tawm.

Dab tsi yog elasticity thiab elastic txwv?

Elasticity yog ib yam khoom ntawm cov khoom, vim li ntawd, thaum lub zog deforming raug tshem tawm, nws rov qab mus rau qhov qub thiab zoo li qub. Qhov no yog ua nrog modulus ntawm elasticity, thiab elastic txwv . Elastic txwv yog qhov siab tshaj plaws koj tuaj yeem deform lub cev, ua ntej uas yuav tsis muaj deformation.

Yuav ntsuas lub zog tensile li cas?

Tensile zog feem ntau hu ua qhov kawg tensile zog thiab yog xam los ntawm kev faib cov peaktension quab yuam tus qauv withstands los ntawm nws qhov chaw hla ntu. A tensile tester yog siv rau ntsuas lub zog tensile . Aload cell yog haum rau lub tensile tester rau ntsuas ntsuas zog.

Pom zoo: