Official Answer
Answer
Ƙarfin ƙwanƙwasa zoben riƙewa mai karkace yana iyakance da abubuwa biyu: ƙarfin ƙarar zoben da nakasar tsagi. An ƙididdige ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙarfi $P_r $ a matsayin $P_r = \ frac {D T \ pi au_s}{K_s}$, inda $D$ shine diamita na shaft/bore, $T$ shine kaurin zobe, $ au_s$ shine ƙarfin ƙarfi na kayan (yawanci ana ɗauka azaman $ 0.6 \ lokuta \ sig $ _su), kuma shine $ K. 3). Koyaya, a yawancin lokuta, kayan tsagi (sau da yawa aluminium ko ƙarfe mai laushi) yana haifar da haɓaka kafin zobe ya yi shears. Ƙaddamar da iyaka $P_g$ shine $P_g = \ frac {D d \pi au_y}{K_s}$, inda $d$ shine zurfin tsagi kuma $ au_y $ shine ƙarfin tsintsiya. Dole ne masu ƙira su ɗauki ƙasan waɗannan dabi'u biyu a matsayin amintaccen ƙarfin tura taron.
