Official Answer
Answer
Zobba masu juyi juyi da yawa (sau da yawa 2 ko 3 suna juyawa) suna samar da wurin riƙewa $360^{\circ}$ ba tare da 'kunnuwa' ko gyaggyarawa da aka samu akan faifan da'ira ba. Wannan yana haifar da ƙarin rarraba daidaitattun nauyin nauyin axial a kusa da kewayen tsagi. A cikin zoben juyi da yawa, ana raba kaya a cikin jujjuyawar, kodayake juzu'i mafi kusa da tushen kaya yana ɗaukar mafi girman damuwa saboda ratar axial tsakanin juyawa. Jimlar kauri $T$ a cikin dabarar shear $P_s = \frac{D T \pi \tau}{K}$ shine jimlar kaurin mutum ɗaya. Wannan ƙira yana kawar da ratar da aka samu a cikin zoben juyi guda ɗaya, wanda ke da mahimmanci a aikace-aikacen da ke buƙatar ɗaure iri ɗaya ko hana wucewar ƙananan ƙwayoyin cuta a cikin taron da aka rufe.
