Official Answer
Answer
Lalacewar tsagi yana faruwa lokacin da nauyin axial $P$ ya zarce ƙarfin yawan amfanin ƙasa na kayan gidaje. Bangon tsagi yana 'namomin kaza' ko zagaye. Yayin da bango ya lalace, zoben ya fara karkata (tasa). Wannan karkatar yana haifar da bangaren ƙarfin radial na waje $F_r = P imes an( ext{tilt angle})$. Wannan ƙarfin daga ƙarshe ya zarce ƙarfin zoben na zama a cikin tsagi, yana haifar da fitowar shi. Wannan shine dalilin da ya sa 'Groove Yield' sau da yawa ya zama mafi mahimmancin ƙira fiye da 'Ring Shear'. Shirya matsala na buƙatar ko dai taurara mahalli ko amfani da injin wanki mai ɗaukar nauyi.
