Roj hmab shock absorbers, uas yog ib qho tseem ceeb ntawm damping tivthaiv, tau dav siv nyob rau hauv ntau yam machinery, tsheb, railway locomotives, dej thauj tsheb, dav hlau, thiab lwm yam aircraft. Nws tuaj yeem hais tau tias cov roj hmab shock absorbers xav tau nyob qhov twg qhov kev poob siab thiab kev sib cais yog xav tau. Yog vim li cas yog vim li cas roj hmab shock absorbers yog li dav siv yog vim hais tias lawv zoo siv cov nram qab no yam ntxwv ntawm roj hmab:
1) Roj hmab muaj siab elasticity thiab viscoelasticity;
2) Piv nrog cov ntaub ntawv hlau, roj hmab muaj qhov loj elastic deformation thiab me me elastic modulus;
3) Qhov cuam tshuam qhov tawv nqaij ntawm cov roj hmab yog ntau dua qhov dynamic rigidity, thiab dynamic rigidity kuj yog ntau dua li qhov zoo li qub stiffness, uas yog qhov zoo rau kev txo qhov cuam tshuam deformation thiab dynamic deformation;
4) Cov kev ntxhov siab-strain nkhaus yog kab elliptical hysteresis, nrog thaj tsam sib npaug ntawm lub zog vibration (damping) hloov mus rau hauv tshav kub ntawm txhua lub voj voog kev co, uas tuaj yeem hloov kho los ntawm cov qauv tsim;
5) Roj Hmab yog cov khoom siv tsis sib xws (nrog rau Poisson tus piv ntawm 0.5);
6) Cov duab ntawm cov roj hmab tuaj yeem xaiv tau dawb, thiab cov tawv tawv tuaj yeem hloov kho los ntawm cov qauv tsim kom ua tau raws li qhov yuav tsum tau muaj zog thiab lub zog sib txawv.
