Official Answer
Answer
A cikin majalissar da aka yi matsuguni/shaft da karfen kayan aiki ($HRC> 50$), tsagi ba zai yi ba ko 'mirgina' ba. Sabili da haka, ana watsa cikakken nauyin axial a matsayin mai tsabta mai tsafta zuwa zobe. Zoben yana kasawa lokacin da ƙarfin shear $\tau = \frac{P}{\pi \cdot D \cdot t}$ ya zarce ƙarfin shear $\tau_{ult}$ na kayan zobe. Wannan gazawar kwatsam ce, gagararre. Shirya matsala ya ƙunshi tabbatar da nauyin $P$; idan nauyin yana cikin iyaka, kayan zoben na iya samun lahani na 'haɗa' ko kuma ya kasance 'mai fushi' (ma yi karyewa). Ga waɗannan lokuta da ba kasafai ba, ƙara kaurin zobe $t$ shine kawai maganin inji.
