ELASTIC-PLASTIC TRANSITION STRESSES IN A THIN ROTATING DISC WITH RIGID INCLUSION BY INFINITESIMAL DEFORMATION UNDER STEADY-STATE TEMPERATURE

Stresses for the elastic-plastic transition and fully plastic state have been derived for a thin rotating disc with rigid shaft at different temperatures and results have been discussed and depicted graphically It has been observed that at room temperature rotating disc made of compressible material and of smaller radii ratio yields at the internal surface at a higher angular speed as compared to rotating disc made of incompressible material With the introduction of thermal effect rotating disc yields at the outer surface at a lesser angular speed as compared to rotating disc at room temperature The circumferential stress is maximum at the outer surface of the rotating disc with further increases with the increase in temperature It means that angular speed of the rotating disc is less than that of the temperature-loaded disc in the fully plastic case.