Anti Roll Bar Seminar Report

Abstract –

Anti-roll bar is the part of an automobile suspension system that connects the left and right wheel members through short lever arms and is clamped to the vehicle chassis with rubber bushes. It forces each side of the vehicle to lower, or rise, to similar heights, to reduce the sideways tilting (roll) of the vehicle on curves, sharp corners, or large bumps. It also resists roll or swaying of the vehicle which occurs during cornering or due to road irregularities. In this study FEA is carried out to perform structural analysis of Anti-roll bar using ANSYS Parametric Design Language (APDL). The proposed work is focus on to prepare the methodology for analysis of the anti-roll bar, the methods of its optimization.

Keywords: Structural

A typical Anti-roll bar

Purpose of anti- roll bar

Anti- roll bar being a component of a suspension system is used to improve the performance of vehicle with respect to the three aspects i.e. ride comfort, handling and road holding, The ride comfort requires isolating the vehicle and its occupants from vibrations and shocks caused by the road surface. Handling requires providing safety in maneuvers and in ease in steering. For good road holding the tires must be kept in contact with the road surface to ensure the directional control.

Principle of working

The anti- roll bar is usually a torsion spring that resists body roll motions. It is usually constructed out of a cylindrical steel bar. Formed into a “U” shape that connects to the body at two points and at the left and right side of the suspension. If the left and right wheels move together, the bar rotates about its mounting point but if the wheels move relative to each other, the bar is subjected to torsion and forced to twist. The ends of the bar are connected to an end link through a flexible joint. The anti- roll bar end link connects in turn to a spot near a wheel which transfers forces from a heavily loaded axel to the opposite side. So in anti- roll bar forces are transferred from heavily loaded axle to the connected end link via a bushing, to the anti- roll bar via a flexible joint to the connected end link on the connected end link on the opposite side of the vehicle to the opposite

In this study Finite element modeling and analysis of the existing anti-roll bar is performing using the ANSYS software. Initially the parametric model of anti-roll bar is prepared in ANSYS using the ANSYS Parametric Design Language (APDL) and analysis of anti-roll bar is performed. Experimental validation of the analysis will be done using parametric model. Finally the optimization of the Anti-roll bar is performed using the above validated parametric model. The proposed work is for the overall methodology for the analysis of anti-roll bar and its