Abstract: The connecting rod is the intermediate member between the piston and the Crankshaft. Its primary function is to transmit the push and pull from the piston pin to the crank pin, thus converting the reciprocating motion of the piston into rotary motion of the crank. Connecting rod design is very important because of its role in the crank mechanism, so that the research that can be applied in optimal design of connecting rod can lead to increased engine performance. The connecting rod is very hard and strong but sometimes deforms and breaks due to vibration. The determination the natural frequency of components is essential to prevent the resonance phenomenon. Identify the critical velocity of connecting rod for the resonance frequency range is essential. This study incorporates FEA modal analysis and experimental modal analysis of connecting rod. A parametric model of Connecting rod is modelled using Pro-E and finite element analysis is carried out by using ANSYS Software. Finite element method is used to determine natural frequencies of a connecting rod
Keywords: Connecting Rod, crank Mechanism, Natural Frequency, Noise and Vibration, ANSYS Software.