FATIGUE ANALYSIS OF CONNECTING ROD OF INTERNAL COMBUSTION ENGINE MADE FROM ALUMINUM ALLOY – A COMPARISON WITH STEEL AND TITANIUM ALLOY MATERIALS

Abstract

The internal combustion engine is consist of three main components, the Piston, the Connecting Rod, and the Crankshaft. Connecting rods can be manufactured from many different materials and with many design shapes, each type of connecting rod is designed according to the type of engine fuel ( diesel or petrol ). During manufacturing an engine it is important to choose the correct connecting rod. Information about fatigue analysis was needed for connecting rod to properly decide which one is optimum for there engine according to safety and life, by using numerical technique of Finite Element method ( ANSYS ) Package. Higher safety factor is achieved by using aluminium alloy rather than titanium alloy and steel materials with about 32.1 % and 35.6 % percentage increment respectively. Aluminium connecting rod has life reached higher than both mention materials about 99 %.