Official Answer
Answer
Imihangayiko ntarengwa iboneka hejuru yumuraba kandi ibarwa ukoresheje $ S = \ frac {3 \ pi P D_m} {4 b t ^ 2 N ^ 2} $. Agaciro kagomba kugereranwa nimbaraga zingirakamaro yibikoresho, byahinduwe nimpamvu yumutekano kubikorwa byihariye. Kuri 17-7PH CH900, imbaraga zitanga umusaruro ni $ 1,170 $ MPa. Niba impungenge zibarwa $ S $ zirenga $ 80 \% $ byimbaraga zumusaruro mugihe gikora, isoko ishobora guhura nigihe gihoraho. Mubisabwa byizunguruka cyane, imihangayiko igomba kubikwa munsi yumupaka wokwihangana usobanurwa nisano ya Goodman $ S_a = S_e (1 - \ frac {S_m} {S_u}) $ aho $ S_a $ ihinduranya stress naho $ S_m $ bisobanura guhangayika.
