Answer
Kugereranya ubuzima bw'umunaniro ku masoko y'amazi bikubiyemo kubara impagarara zisimburana $ \ sigma_a $ hamwe n'impagarara $ \ sigma_m $. Ku masoko y'umuhengeri, imihangayiko ntarengwa iboneka ku mpinga y'umuhengeri kandi itangwa na $ \ sigma = \ frac {3 \ cdot π \ cdot E \ cdot t \ cdot N ^ 2 \ cdot f} {4 \ cdot D_m ^ 2 \ cdot n} $. Ukoresheje isano ya Goodman $ \ frac {\ sigma_a} {\ sigma_e} + \ frac {\ sigma_m} {\ sigma_ {ut}} = 1 $, aho $ \ sigma_e $ arirwo rugero rwo kwihangana kandi $ \ sigma_ {ut} $ nizo mbaraga zidasanzwe (hafi 1650 MPa kuri 17-7PH CH900). Mubisabwa byizunguruka cyane nka pompe zubuvuzi, tugamije ibintu byumutekano $ S_f> 1.2 $. Imihangayiko isigaye ituruka kumashanyarazi igomba kugabanywa hifashishijwe uburyo bwo kuvura ubushyuhe ku $ 480 ^ ∘C $ kugirango harebwe ko impagarara zidahinduka mugihe cya serivisi.
