Technological yam ntxwv ntawm yeeb nkab Bender

Kev khoov ntawm cov yeeb nkab los ntawm cov yeeb nkab bender yog tib yam li cov ntawv hlau. Nyob rau hauv cov ntaub ntawv ntawm ntshiab dabtsi yog khoov, thaum cov yeeb nkab nrog txheej kab D thiab phab ntsa thickness t khoov nyob rau hauv qhov kev txiav txim ntawm sab nraud quab yuam M, cov yeeb nkab phab ntsa sab nraum lub nruab nrab txheej bears tensile kev nyuaj siab σ 1, cov yeeb nkab phab ntsa yuav thinner; Kev ntxhov siab ntawm cov yeeb nkab phab ntsa hauv nruab nrab txheej σ 1. Cov yeeb nkab phab ntsa ua tuab dua. Tsis tas li ntawd, cov duab ntawm tus ntoo khaub lig hloov ntawm lub voj voog mus rau ze li ntawm elliptical vim yog kev sib xyaw ua ke F1 thiab F2. Thaum lub deformation loj heev, cov yeeb nkab phab ntsa sab nrauv yuav tsim cov kab nrib pleb thiab cov yeeb nkab sab hauv phab ntsa yuav wrinkle.
Lub deformation degree ntawm cov kav dej nyob ntawm tus nqi ntawm tus txheeb ze dabtsi yog khoov vojvoog R / D thiab tus txheeb ze thickness t / D. Qhov me dua tus nqi ntawm R / D thiab t / D, qhov ntau dua qhov deformation degree. Txhawm rau kom ntseeg tau tias qhov zoo ntawm cov yeeb nkab fittings, qhov deformation degree yuav tsum tau tswj nyob rau hauv qhov kev tso cai. Txoj kev bending txoj kev txwv ntawm cov yeeb nkab fittings nyob ntawm tsis yog tsuas yog nyob rau hauv lub mechanical zog thiab dabtsi yog khoov txoj kev ntawm cov ntaub ntawv, tab sis kuj nyob rau hauv cov kev siv ntawm cov yeeb nkab fittings. Txoj kev txwv ntawm cov yeeb nkab fittings yuav tsum muaj cov ntsiab lus hauv qab no:
1) Qhov siab tshaj plaws elongation deformation nyob rau hauv lub tensile deformation cheeb tsam sab nraum lub nruab nrab txheej tsis tshaj cov yas tso cai tus nqi ntawm cov khoom, ua rau tawg;
2) Nyob rau hauv lub compression deformation cheeb tsam ntawm lub puab sab ntawm lub nruab nrab txheej, nyias-walled qauv nyob rau hauv qhov kev txiav txim ntawm tangential compressive kev nyuaj siab yuav tsis wrinkle tshaj lub buckling;
3) Yog hais tias cov yeeb nkab fittings muaj ovality yuav tsum tau, tswj qhov distortion ntawm nws seem;
4) Yog tias cov yeeb nkab fittings muaj qhov yuav tsum tau muaj zog los tiv thaiv sab hauv, qhov kev txwv ntawm phab ntsa thickness txo yuav tsum tau tswj.