Answer
Ciminni cirrachaa $S_s$ alayidii sibiilaa akka waliigalaatti cimina harkisaa isaa isa dhumaa $S_u$ wajjin wal qabata. Akka Tiyoorii Annisaa Jal’isuutti (ulaagaa Voon Mises) $S_s = 0.577 \cdot S_u$. Sibiilli kaarboonii SAE 1070 $S_u = 210,000$ psi qabuuf, ciminni cirrachaa ti’oorii $S_s \approx 121,170$ psi dha. Dandeettii dhiibbaa eksaayilii $P_r$ yeroo shallagnu, $P_r = \frac{D \cdot t \cdot \pi \cdot S_s}{K}$ fayyadamna. Yoo fe'iinsi dhiibbaa barbaachisu $10,000$ lbs fi daayameetira $D$ $2.0$ inchii ta'e, furdinni xiqqaan $t$ ($K=3$ jennee yoo fudhanne) $t = \frac{10000 \cdot 3}{2.0 \cdot \pi \cdot 121170} \tilmaamaan 0.039$ inchii ta'a. Injiinarroonni cimina cirrachaa meeshaa groove, yeroo baay’ee baay’ee gadi aanaadha, keessumaa alayidii aluminiyeemii akka 6061-T6 ($S_s \approx 27,000$ psi) keessattis herrega baasuu qabu.
