Design and Optimization of Rocker Arm

Abstract

A rocker arm is a valve train component in internal combustion engines to function of combustion. As rocker arm
is acted on by a camshaft yack , it pushes and opens either the intake valve or either exhaust valve. This allows fuel
and air to be drawn into the combustion chamber during the intake stroke or exhaust gases to be exited during the
exhaust stroke. Rocker arms was first invented on the 19th century, and have been changed a little in dimension
function since then. Improvements have been made however in 20th century, in both efficiency of operation and
construction materials. About rocker arm of Tata automobiles. It will make the exact design of rocker arm of Tata
hexa , vista in reverse engineering process. The analyze rocker arm by using various composite materials. Over the
year’s rocker Arm have been optimized in its design and different engineering materials such as (Cast iron,
Aluminium Alloy and Titanium) for better performance. Durability, Toughness, higher dimension, stability, wear
predictive , strength, rigidity and cost of materials as well as economic factors are the reasons for optimization of
Rocker Arm. The CAD models of Rocker Arm will be created using CATIA (P3 V5R14 ) and ANSYS(16.1) software
will be used for analysis of rocker arm. The CAD model will be inherited in ANSYS Workbench and with Equivalent
Stress and Maximum Shear Stress will be found. The obtained results are provided by ANSYS Workbench are
compared to the results obtained by manual calculation.