Reference no: EM132328009 , Length: 20

Topic- Vehicle Dynamics and Simulation

Introduction

The aim of this module is to understand ground vehicle dynamic response and engineer methods to achieve desired vehicle behaviour. The students will be taught the principles of longitudinal and lateral load transfer and their effect on vehicle behaviour. The underlying concepts and design methods for vehicle performance, ride and handling will be dealt in detail.

Students will be taught to develop virtual vehicle models and simulate vehicle behaviour for various road inputs using ADAMS. The student will also be given experience of testing a ground vehicle in the laboratory and as well as on road to analyse performance, ride and handling behaviour of the vehicle.

PART A

Performance, Ride and Handling are the three important metrics that we use in vehicle dynamic evaluation. Often it is found that it would be difficult to achieve the best of both handling and ride in the same vehicle.

In this context, debate on the following statement:

"High standard of ride and handling can be achieved simultaneously"

Bring out well researched views on this statement with respect to passenger car. Your report should address the following:

1.1 Challenges involved in achieving handling and ride simultaneously

1.2 Present status of the vehicle suspension design

1.3 Stance taken with justification and a relevant case study 1.4 Conclusion

This part of the assignment must be limited to three A4 pages including all illustrations in the word-processed document.

Part B:

This part of assignment is intended to check the student's analytical skills for designing suspension components of a passenger car.

For the given vehicle level targets for suspension design, perform the following tasks: 2.1 Assumptions required for calculations

2.2 Calculate the required front and rear spring stiffness

2.3 Calculate the front and rear antiroll bar stiffness with a goal of achieving understeer due to roll moment distribution.

2.4 Comment on the results obtained

Note: Vehicle target levels for suspension design will be provided by module leader

Part C :

This part of assignment is intended to check the student's skill in using MATLAB software for analyzing vehicle dynamic behaviour.

Perform the following tasks:

3.1 Create a mathematical half car model to analyse body roll mode.

3.2 Derive the equations of motion for the half car mode and determine mass and stiffness matrix.

3.3 Predict natural frequencies and mode shapes using MATLAB.

3.4 Determine the bounce and roll frequencies for the vehicle data selected for Part B of assignment and critically comment on the results obtained

3.5 Increase the antiroll bar stiffness by 25% and compare the results from 3.4. Comment on obtained results.

You need Maximum of Totally 20 Pages ( Including Part A, Part B and Part C )