Course

Fundamentals of Vehicle Dynamics

Scheme

Prerequisite

Semesters

1

Credits/Hours

3/3

Style

█Lecture  ▇Lecture+Lab  □Computer Lab  □Ordinary Lab      

Aim

    To introduce the basic mechanics governing vehicle dynamic performance in the longitudinal (acceleration and braking modes), ride (vertical and pitch motions), and handling (lateral, yaw, and roll modes). Engineering analysis techniques will be applied to basic systems and subsystems to derive the controlling equation. The equations reveal which vehicle properties are influential to a given mode of performance and provide a tool for its prediction. By understanding the derivation of the equations, the practitioner is made aware of the range of validity and limitations of the results.

Topics

Summary

Lecturing Hours

Introduction

1. Dawn of the Motor Vehicle Age

2. Introduction to Vehicle Dynamics

3.  Fundamental Approach to Modeling

4.Dynamic Axle Loads

3

Acceleration performance

1. Power-Limited Acceleration

2. Traction-Limited Acceleration

3. Example Problem

3

Braking Performance

1. Fundamentals of signals and systems

2. Brake Forces

3. Brake Factor

4.Tire-road Friction

6

Road Loads

1. Aerodynamics

2. Rolling Resistance

3. Total Road Load

3

Ride

1.Excitation Sources

2. Vehicle Response Properties

3.Perception of Ride

3

Steady-state cornering

1. Low-Speed Turning

2. High-Speed Cornering

3. Suspension Effects on Cornering

4.Summary of Under steer Effects

5.Experimental Measurement of Under steer Gradient

6

Suspensions

1. Solid Axles

2. Independent Suspension

3. Anti-Squat and Anti-Pitch Suspension Geometry

4.Anti-Dive Suspension Geometry

6

The Steering System

1. Introduction

2. The Steering Linkages

3. Steering Geometry Error

4. Front Wheel Geometry

5. Steering System Forces and Moments

6.  Steering System Models

7.  Influence of Front-Wheel Drive

8.  Four-Wheel Steer

9

Tire

1. Tire Construction

2.  Size and Load Rating

3.  Mechanics of force Generation

4. Tractive Properties

5. Cornering properties

6. Camber Thrust

7. Aligning Moment

8. Combined Braking and Cornering

9. Conicity and Ply Steer

10. Durability Forces

11. Tire Vibrations

9