Answer
Don maɓuɓɓugar igiyar ruwa-zuwa-crest tare da ƙarshen shim, ƙimar yanayin bazara $k$ an samo shi daga juzu'i na roba mai lanƙwasa. An bayyana dabarar a matsayin $ k = \ frac {E b t ^ 3 N_w^4}{48 I D_m^3 N}$, inda $E$ shine Modulus na Elasticity, $ b$ shine radial nisa na kayan, $ t $ shine kauri na kayan, $ N_w $ shine adadin raƙuman ruwa a kowane juzu'i, $ I $ shine lokacin ma'ana na iner$, $ N shine ma'anar diamita, lambar $ N shine matsakaicin $ N. juya. Yana da mahimmanci a lura cewa ƙimar bazara ya yi daidai da ƙarfin na huɗu na adadin raƙuman ruwa ($ N_w ^ 4 $). Wannan yana nufin cewa ko da ƙaramar karuwa a ƙididdige igiyoyin igiyar ruwa yana ƙaruwa da ƙarfi na bazara, yana barin injiniyoyi su daidaita kayan aiki a cikin wurare masu tsauri. A cikin madaidaicin aikace-aikacen sararin samaniya ta amfani da bakin karfe na 17-7PH, ana amfani da wannan alaƙar don cimma ma'aunin ƙarfi-zuwa juzu'i inda maɓuɓɓugan murɗa na gargajiya za su yi girma da yawa.
