Final Project

Vehicle Ride :

The necessary following paraemeters required to calculate the Ride frequency are calculated. Wheel rate and ride rate for both front and rear are to be evaluated. The time lag is calculated based on the speed and the wheelbase.

The Front and rear frequencies are calculated from the values found above and the bump oscillation curve is to be plotted to evaluate the lag of front and rear.

Roll & ARB Design :

To evaluate the Roll of the vehicle, Roll stiffness related to Tyre,Wheel center, without tyre effect and the wheel rate are to be calculated. Before proceeding with the above parameters, evaluation of Roll moment in lateral and gravity component need to found.

To examine the diameter of ARB Auxillary roll stiffness need to calculated followed by Roll stiffness and roll moments.

Once the Diameter of Front and Rear ARB, the necessary spring rate, Torsional rate and the percentage roll is found.

Tire stiffness:

The stiffness related to tire Cornering stiffness,Camber stiffness and the aliging stiffness are calculated through the given vehicle dimensions and the respecting stiffness values and normal load.

UnderSteer - Contributors

The cornering compliance values which contributes higher to understeer are evaulated based on the given constraints and the required parameters calculated from tire stiffness.

Weight distribution plays major role in understeer gradient comparing to other compliances.