Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm cov ntu hollow yog lawv qhov zoo tshaj plaws lub zog-rau-qhov hnyav piv. Vim lawv cov qauv hollow, cov seem no tuaj yeem muab tib yam lossis ntau dua lub zog raws li cov khoom seem thaum sib dua. Qhov no tshwj xeeb tshaj yog muaj txiaj ntsig zoo hauv kev tsim kho loj uas txo qhov hnyav tag nrho ntawm cov qauv yog qhov tseem ceeb. Qhov hnyav hnyav tsis tsuas yog ua kom yooj yim rau kev thauj thiab tuav, tab sis nws kuj txo cov load ntawm lub hauv paus, uas yuav txuag tau cov nqi hauv lub hauv paus tsim thiab kev tsim kho.
Lwm qhov txiaj ntsig tseem ceeb yog qhov zoo heev torsional tsis kam ntawm hollow seem. Lawv cov duab kaw muaj kev tiv thaiv zoo heev rau torsional rog, ua rau lawv zoo tagnrho rau kev siv hauv cov qauv uas raug rau cov loads. Qhov no feature yog tshwj xeeb tshaj yog muaj nqis nyob rau hauv daim ntawv thov xws li choj kev tsim kho, qhov twg torsional stability yog ib qho tseem ceeb los xyuas kom meej qhov kev nyab xeeb thiab ntev ntawm cov qauv.
Hollow seem kuj ua tau zoo nyob rau hauv buckling kuj. Lub hollow tsim disperses cov khoom deb ntawm qhov nruab nrab axis, ua rau lub sij hawm ntawm inertia ntawm seem. Qhov no txhim kho buckling tsis kam nyob rau hauv compressive loads, tso cai rau ntev unsupported spans thiab muaj peev xwm txo tus naj npawb ntawm cov kev txhawb nqa uas yuav tsum tau nyob rau hauv cov qauv.
Tsis tas li ntawd, cov hollow profiles no muaj kev tiv thaiv hluav taws zoo heev. Cov duab kaw ntawm cov profiles tuaj yeem ua tiav nrog cov pob zeb lossis lwm yam khoom siv hluav taws kub, uas ua rau cov qauv muaj peev xwm tiv taus qhov kub thiab txias thaum muaj hluav taws kub. Qhov tshwj xeeb no muaj txiaj ntsig tshwj xeeb hauv cov tsev uas muaj kev nyab xeeb hluav taws kub tseem ceeb.
Txias Tsim A500 Hollow Tshooj yeeb nkab
