Official Answer
Answer
Multi-juya karkace rikowa zobba (yawanci 2-juya ko 3-juya) samar da muhimmanci mafi girma matsa iya fiye da guda-juya hatimi zobba saboda axial load da aka rarraba a kan mahara kauri na abu. Ƙarfin shear zobe shine $P_r = _x000c_rac{ ext{π} imes D imes t imes n imes S_s}{KFS}$, inda $n$ shine adadin juyi kuma $t$ shine kaurin juzu'i ɗaya. Domin an murƙushe su daga waya mai lebur, suna da wurin riƙewa $360^{\circ}$ ba tare da laƙabi ba, wanda ke kawar da 'rabin' da aka samu a cikin zoben da aka hatimi. Wannan haɗin haɗin kai yana tabbatar da cewa ana amfani da nauyin axial daidai da bangon tsagi, yana rage yawan damuwa na gida.
