Modeling and Fatigue Analysis of Metal Matrix Composite Cam Shaft Using Finite Element Analysis

Abstract

A camshaft is a shaft to which a cam is fastened or of which a cam forms an integral part. In internal combustion engines with pistons, the camshaft is used to operate poppet valves. It then consists of a cylindrical rod running the length of the cylinder bank with a number of oblong lobes protruding from it, one for each valve. the rotation of the camshaft and the rotation of the crankshaft is of critical importance. Since the valves control the flow of the air/fuel mixture intake and exhaust gases, they must be opened and closed at the appropriate time during the stroke of the piston.

 This camshaft is rotate at high speeds causing vibrations in the system. Camshafts are also subjected to varying contact fatigue loads due to the contact of the plunger on the cam. Camshafts are rotating components with critical load; these exact values are needed to be determining to avoid failure in camshaft.

Here in this project modeling of camshaft is done in solid works 2016 design modeling software and Static analysis is carried out to find stress, strain and deformtion due to applied load, and Fatigue analysis is carried out in ansys 16 to find its life , Damage and Factor of safety  in ANSYS work bench software by using two different material one is generally used Alloy steel (42CrMo4) and other is Aluminium Metal Matrix material ,on given load condition.