Steel yeeb nkab bearing muaj peev xwm
Nws muaj kev cuam tshuam rau lub zog thiab ruaj khov ntawm cov yeeb nkab steel (tag nrho stability). Thaum lub steel yeeb nkab yog strained, nws tsis ua hauj lwm yog lub zog tsis ua hauj lwm, thiab tus tsim tus nqi ntawm axial nro nws yuav dais yog: N=A * f, qhov twg: A yog cov seem cheeb tsam ntawm steel yeeb nkab, thiab f yog lub tsim tus nqi ntawm steel zog. Qhov txo qis ntawm cov yeeb nkab steel phab ntsa thickness inevitably ua rau txo qis ntawm ntu ntu ntawm cov yeeb nkab steel, uas ua rau txo qis axial nro tus nqi ntawm cov yeeb nkab steel. Thaum cov yeeb nkab steel nyob rau hauv siab, nws tsis ua hauj lwm yog stability tsis ua hauj lwm, tus tsim tus nqi ntawm lub siab nws yuav dais yog: N=φ * f * A, qhov twg: φ yog tag nrho stability coefficient ntawm cov yeeb nkab steel, Raws li nws cov slenderness piv tuaj yeem tshawb xyuas los ntawm lub rooj sib txuas ntawm cov qauv hlau tsim qauv, cov qauv kev suav ntawm qhov sib piv yog: λ=l / i, l yog nws qhov ntev ntawm qhov ntsuas, kuv yog lub vojvoog ntawm kev sib hloov. ntawm ntu, vim qhov txo qis ntawm steel tube phab ntsa thickness, inevitably ua rau txo qis, vim tias i=sqrt(I/A), ntawm no kuv yog steel raj seem lub sij hawm ntawm inertia, A yog seem cheeb tsam , yog li vim qhov txo qis ntawm phab ntsa thickness, uas ua rau qhov nce ntawm slenderness piv, ua rau txo qis ntawm stability coefficient φ, Thaum kawg, tus tsim tus nqi ntawm cov kabmob ruaj khov yog txo. Feem ntau, qhov txo ntawm phab ntsa thickness muaj qhov cuam tshuam ntau dua ntawm cov kabmob muaj peev xwm nyob rau hauv compression dua li qhov nro.
