Official Answer
Answer
Gefen gefen ita ce nisa daga gefen tsagi zuwa ƙarshen ramin ko ƙugiya. Idan wannan gefen ya yi ƙanƙanta, kayan za su yi kasala ta hanyar 'shear-out' ko 'busa-bushe'. Ka'idar babban yatsan yatsa ita ce gefen $z$ ya kamata ya zama aƙalla $3 \ cdot d$ (zurfin tsagi sau uku). Lissafi don matsakaicin nauyin $P_z$ kafin gazawar gefen shine $P_z = \frac{2 π D z τ_y}{S}$. A cikin mahaɗin da ke ƙarƙashin teku inda sarari yake a ƙima, injiniyoyi sukan yi amfani da alluran ƙarfi masu ƙarfi kamar Inconel 718 don shaft don rage gefen gefen da ake buƙata, yana ba da damar ƙirar ƙira ba tare da sadaukar da ƙimar $P_z$ ba.
