Viscoelasticity yog khoom ntawm cov khoom uas nthuav tawm ob qho tib si viscous thiab elasticity thaum tab tom deformation. Synthetic polymers, ntoo, thiab tib neeg cov ntaub so ntswg, nrog rau cov hlau ntawm qhov kub thiab txias, tso saib cov teebmeem viscoelastic tseem ceeb.
Cov khoom siv viscoelastic yog dab tsi?
Viscoelastic cov ntaub ntawv yog siv rau hauv tsheb bumpers, ntawm lub computer tsav los tiv thaiv cov neeg kho tshuab poob siab, hauv kaus mom hlau (cov npuas padding sab hauv), hauv wrestling lev, thiab lwm yam. Cov ntaub ntawv Viscoelastic yog kuj tseem siv rau hauv khau insoles los txo cov kev cuam tshuam kis mus rau tus neeg lub cev pob txha.
piv txwv viscoelasticity yog dab tsi?
Cov piv txwv ntawm cov ntaub ntawv viscoelastic yog spaghetti, shag (tam sim no), ib pawg ntawm cov kab cab txav los ntawm ib leeg thiab (tau kawg) polymers. Polymers yeej ib txwm viscoelastic vim lawv muaj tawm ntawm cov molecules ntev uas yuav entangled nrog lawv cov neeg zej zog.
YPuas viscoelasticity yog cov cuab yeej cuab tam?
2.2. 3 Viscoelasticity. Cov ntaub ntawv viscoelastic nthuav tawm cov khoom siv kho tshuab nruab nrab ntawm cov kua nplaum thiab cov khoom elastic. Cov ntaub ntawv Polymeric, thiab tshwj xeeb tshaj yog cov thermoplastic, yog cov ntaub ntawv viscoelastic.
Cov khoom ntawm viscoelastic yog dab tsi?
Muaj peb yam tseem ceeb ntawm cov ntaub ntawv viscoelastic: creep, kev ntxhov siab, thiabhysteresis. Qhov tshwm sim creep yog siv los piav txog qhov txuas ntxiv deformation ntawm cov khoom siv viscoelastic tom qab lub load tau mus txog lub xeev tas li (Fig. 5.4A).
