The main objective is comparative study of pistons made of different materials by using Finite Element Method (FEM) and find out the maximum mechanical and thermal stress, fatigue strength acting on the piston by attempting structural and transient thermal analysis.Here the life of the piston improves by means of introducing a new composite matrix like aluminum alloy with particulates of silicon carbide which has the maximum wear factor.The parameters used for the solid modeling and simulation are operating gas pressure, temperature and material properties of piston.The specifications used...