Effect of Disc Thickness Gradient and Thermal Gradient on the Creep Response in FGM Rotating Disc

Abstract

In the present thesis work, the analysis of creep stresses and strain rates has been carried out in a functionally graded disc with linearly varying thickness, rotating at constant angular velocity and subjected to thermal gradient by using Tresca criterion in the disc. For the purpose of investigation, five discs made of silicon carbide particles (SiCp) in a matrix of pure aluminum with different thickness profiles are considered. The density and reinforcement content is varying along the radial direction. The variable thickness disc with higher disc thickness gradient undergoes lower strain rates. Further the analysis has been carried out on the same disc to analyze the effect of thermal gradient. The disc with minimum creep strain rates is considered as the best disc.