Official Answer
Answer
Ƙarfin ƙira na zobe da kansa ya dogara ne akan yankin yanki na kayan. Tsarin shine $P_r = π · D · t · τ_{ult} / S_f$, inda $D $ shine diamita na shaft/bore, $t$ shine kauri na zobe, kuma $τ_{ult}$ shine ƙarfin juzu'i na kayan (yawanci ana ɗauka azaman $0.6 · σ_{tensile}$ don karfe). Yana da mahimmanci a lura cewa wannan lissafin yana ɗaukar nauyin da aka yi amfani da shi daidai kuma cewa tsagi da abin da aka riƙe yana da ƙananan radii. Idan ɓangaren da aka riƙe yana da babban radius na kusurwa, zai ƙara ɗaukar nauyin a kan zoben, yana ƙirƙira hannu na ɗan lokaci wanda zai kai ga 'tasa' kuma yana rage tasiri mai tasiri.
