Creep Transition in a Thin Rotating Disc Having Variable Density with Inclusion

Creep stresses and strain rates have been obtained for a thin rotating disc having variable density with inclusion by using Seth’s transition theory. The density of the disc is assumed to vary radially, i.e. ( ) 0 / m r b ρ ρ − = ; 0 ρ and m being real positive constants. It has been observed that a disc, whose density increases radially, rotates at higher angular speed, thus decreasing the possibility of a fracture at the bore, whereas for a disc whose density decreases radially, the possibility of a fracture at the bore increases. Keyword—Elastic-Plastic, Inclusion, Rotating disc, Stress, Strain rates, Transition, variable density.