Official Answer
Answer
Matsakaicin shigarwa $σ_i$ yana faruwa lokacin da aka faɗaɗa zobe a kan sandar ko an yi kwangilar shiga cikin rami. Ana lissafta shi da $σ_i = \frac{E · t · (D_g - D_i)}{D_m^2}$. Don hana 'saiti na dindindin' (inda zoben baya komawa zuwa diamita na asali), $σ_i$ dole ne ya zama ƙasa da ƙarfin amfanin gona $σ_y$ na kayan. Don $17-7PH$ CH900, $σ_y \kimanin $200 ksi. Idan lissafin ya nuna $σ_i> σ_y$, dole ne a sake fasalin zoben tare da ƙarin juyi (wanda ke rage kauri $t$ kowane juyi) ko mafi girman diamita kyauta. A cikin filin, yin amfani da madaidaicin 'Installation Cone' da 'Plunger' yana da mahimmanci don tabbatar da faɗaɗa zobe iri ɗaya kuma bai wuce iyakar ƙididdigewa ba.
