Answer
Guhangayikishwa cyane mugihe cyo kwishyiriraho bibaho iyo impeta yaguwe hejuru yumutwe cyangwa igasezerana munzu. Guhangayikishwa no kwishyiriraho $ S_i $ bibarwa nk $ S_i = \ frac {E \ cdot t \ cdot (D_g - D_f)} {D_f \ cdot D_g} $, aho $ E $ ari modulus, $ t $ nubunini bwibikoresho, $ D_g $ ni diameter yubushakashatsi (shaft cyangwa inzu), na $ D_f $ ni impeta yubusa. Kugirango wirinde gushiraho burundu (deforme ya plastike), $ S_i $ ntigomba kurenza imbaraga zumusaruro $ \ sigma_y $ yibikoresho. Niba $ S_i> \ sigma_y $, impeta ntizasubira kumurambararo wumwimerere wubusa, biganisha kubusa. Kubikoresho nka SAE 1070, imipaka ni $ 200,000 $ psi. Niba porogaramu isaba kwaguka birenze urugero, impeta igomba kuba yarakozwe hamwe ninshuro nyinshi cyangwa yoroheje yambukiranya igice kugirango igabanye umurongo.
