Answer
Lalacewar tsagi yana faruwa ne lokacin da matsi na matsi da zoben riƙewa ke yi ya zarce ƙarfin abin da ake samu na tsagi (sau da yawa aluminum ko ƙarfe mai laushi). Matsakaicin ƙarfin tuƙi dangane da yawan amfanin ƙasa shine $ P_g = \ frac {D \ cdot d \ cdot \ pi \ cdot \ sigma_y}{K}$, inda $ D $ shine diamita, $ d $ shine zurfin tsagi, $ \ sigma_y $ shine ƙarfin yawan amfanin ƙasa na kayan tsagi, kuma $ K $ shine 2 factor (usu). Idan $P_{applied}> P_g$, bangon tsagi zai lalace ta hanyar robobi, yana ƙirƙirar bayanan martaba. Wannan ramping yana sa zoben riƙewa zuwa tasa (karkatar da hankali), wanda ke gabatar da sashin radial na ƙarfi wanda a ƙarshe zai iya fitar da zoben daga tsagi. Don hana hakan, injiniyoyi yakamata su ƙididdige ramuka masu tauri ko ƙara zurfin tsagi, in dai ingantacciyar tsarin sandar ta kasance cikin iyaka.
