Iav yog ib yam khoom tawv thiab tawg yooj yim. Txawm li cas los xij, tsuav yog nws yaj ntawm qhov kub siab thiab tom qab ntawd rub sai sai los ntawm cov qhov me me rau hauv cov iav fibers zoo heev, cov khoom siv no yooj ywm heev. Ib yam li iav, vim li cas cov iav thaiv feem ntau thiaj nyuaj thiab tawg yooj yim, thaum cov iav fibrous yooj ywm thiab yooj ywm? Qhov no tau piav qhia zoo los ntawm cov ntsiab cai geometric.
Xav txog tias yog koj khoov ib tug pas ntoo (yog tias tsis muaj kev tawg), thiab ntau qhov ntawm tus pas ntoo yuav raug deformed rau ntau qib, tshwj xeeb, sab nraud raug ncab, sab hauv raug nias, thiab qhov loj ntawm lub axis yuav luag tsis hloov pauv. Thaum khoov ntawm tib lub kaum sab xis, tus pas ntoo nyias dua, sab nraud raug ncab tsawg dua thiab sab hauv raug nias tsawg dua. Hauv lwm lo lus, nyias dua, qhov kev hloov pauv hauv zos lossis kev sib txhuam me dua rau tib qib kev khoov. Txhua yam khoom siv tuaj yeem raug qee qib ntawm kev hloov pauv tas mus li, txawm tias iav, tab sis cov khoom tawg yooj yim tuaj yeem tiv taus qhov kev hloov pauv tsawg dua li cov khoom siv ductile. Thaum cov iav fiber nyias txaus, txawm tias muaj qib kev khoov loj tshwm sim, qhov kev hloov pauv hauv zos lossis kev sib txhuam me me heev, uas nyob hauv qhov ntau ntawm cov khoom siv, yog li nws yuav tsis tawg.
Lub sijhawm tshaj tawm: Lub Xya Hli-04-2022
