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The Multibody Systems Approach to Vehicle Dynamics
 
 

The Multibody Systems Approach to Vehicle Dynamics, 2nd Edition

 
The Multibody Systems Approach to Vehicle Dynamics, 2nd Edition,Michael Blundell,Damian Harty,ISBN9780080994253
 
 
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Butterworth-Heinemann

9780080994253

776

235 X 191

Dedicated guide to the application of multibody systems analysis (MBS) to vehicle dynamics modeling and simulation

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Paperback

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USD 99.95
 
 

Key Features

  • Unique gelling of foundational theory, research findings, practical insights, and multibody systems modeling know-how, reflecting the mixed academic and industrial experience of this expert author team
  • Coverage of the latest models, safety developments, simulation methods, and features bring the new edition up to date with advances in this critical and evolving field

Description

Filling the gaps between subjective vehicle assessment, classical vehicle dynamics and computer-based multibody approaches, The Multibody Systems Approach to Vehicle Dynamics offers unique coverage of both the virtual and practical aspects of vehicle dynamics from concept design to system analysis and handling development.

The book provides valuable foundation knowledge of vehicle dynamics as well as drawing on laboratory studies, test-track work, and finished vehicle applications to gel theory with practical examples and observations. Combined with insights into the capabilities and limitations of multibody simulation, this comprehensive mix provides the background understanding, practical reality and simulation know-how needed to make and interpret useful models.

New to this edition you will find coverage of the latest tire models, changes to the modeling of light commercial vehicles, developments in active safety systems, torque vectoring, and examples in AView, as well as updates to theory, simulation, and modeling techniques throughout.

Readership

Practicing engineers, graduate students and researchers working in vehicle dynamics modeling and simulation, including vehicle design engineers and those involved in modeling, specification and analysis of suspension, steering, braking and tires.

Michael Blundell

Mike Blundell is Professor of Vehicle Dynamics and Impact, Mechanical & Automotive Engineering, Coventry University, UK. He specializes in vehicle dynamics and safety teaching and research, and has worked with multibody systems applications in vehicle dynamics in industry and academia, publishing many papers on the topic.

Affiliations and Expertise

University of Coventry, UK

Damian Harty

Damian Harty is a Senior Staff Engineer at Polaris Industries based in Minnesota. He was formerly Director of the Vehicle & System Dynamics Group at Coventry University, a Technical Specialist for vehicle dynamics with Prodrive on the Mini WRC, as well as a freelance consultant.

Affiliations and Expertise

Senior Staff Engineer at Polaris Industries, Minnesota, USA.

The Multibody Systems Approach to Vehicle Dynamics, 2nd Edition

Nomenclature

Chapter 1 INTRODUCTION

    1. Overview
    2. What is Vehicle Dynamics?
    3. Why Analyse?
    4. Classical Methods
    5. Analytical Process
    6. Computational Methods
    7. Computer Based Tools
    8. Commercial Computer Packages
    9. Benchmarking Exercises

Chapter 2 KINEMATICS AND DYNAMICS OF RIGID BODIES

2.1 Introduction

2.2 Theory of Vectors

2.2.1 Position and Relative Position Vectors

2.2.2 The Dot (Scalar) Product

2.2.3 The Cross (Vector) Product

2.2.4 The Scalar Triple Product

2.2.5 The Vector Triple Product

2.2.6 Rotation of a Vector

2.2.7 Vector Transformation

2.2.8 Differentiation of a Vector

2.2.9 Integration of a Vector

2.2.10 Differentiation of the Dot Product

2.2.11 Differentiation of the Cross Product

2.2.12 Summary

2.2.4 Acceleration analysis

2.3 Geometry analysis

2.3.1 Three Point Method

2.3.2 Vehicle Suspension Geometry Analysis

2.4 Velocity Analysis

2.5 Acceleration Analysis

2.6 Static Force and Moment Definition

2.7 Dynamics of a Particle

2.8 Linear Momentum of a Rigid Body

2.9 Angular Momentum

2.10 Moments of Inertia

2.11 Parallel Axes Theorem

2.12 Principal Axes

2.13 Equations of Motion

Chapter 3 MULTIBODY SYSTEMS SIMULATION SOFTWARE

3.1 Overview

3.2 Modelling features

3.2.1 Planning the Model

3.2.2 Co-ordinate Systems

3.2.3 Basic Model Components

3.2.4 Parts and Frames

3.2.5 Equations of Motion for a Part

3.2.6 Basic Constraints

3.2.7 Standard Joints

3.2.8 Degrees of Freedom

3.2.9 Force Elements

3.2.10 Summation of Forces and Moments

3.3 Analysis capabilities

3.3.1 Overview

3.3.2 Solving Linear Equations

3.3.3 Non-Linear Equations

3.3.4 Integration Methods

3.4 Eigensolutions

3.5 Systems of Units

3.6 Further Comments on Pre- and Postprocessing

Chapter 4 MODELLING AND ANALYSIS OF SUSPENSION SYSTEMS

4.1 The Need for Suspension

4.1.1 Wheel Load Variation

4.1.2 Body Isolation

4.1.3 Handling Load Control

4.1.4 Compliant Wheel Plane Control

4.1.5 Kinematic Wheel Plane Control

4.1.6 Component Loading Environment

4.2 Types of Suspension System

4.3 Quarter Vehicle Modelling Approaches

4.4 Determination of Suspension System Characteristics

4.5 Suspension Calculations

4.5.1 Measured Outputs

4.5.2 Suspension Steer Axes

4.5.3 Bump Movement, Wheel Recession and Half Track Change

4.5.4 Camber and Steer Angle

4.5.5 Castor Angle and Suspension Trail

4.5.6 Steering Axis Inclination and Ground Level Offset

4.5.7 Instant Centre and Roll Centre Positions

4.5.8 Calculation of Wheel Rate

4.6 The Compliance Matrix Approach

4.7 Case Study 1 - Suspension Kinematics

4.8 Durability Studies (Component Loading)

4.8.1 Overview

4.8.2 Case Study 2 - Static Durability Loadcase

4.8.3 Case Study 3 - Dynamic Durability Loadcase

4.9 Ride Studies (Body Isolation)

4.9.1 Case Study 4 - Quarter Vehicle Dynamic Performance Analysis

4.9.2 An Active Safety KPI

4.9.3 Ride KPIs

4.10 Case Study 5 - Suspension Vector Analysis comparison with MB

4.10.1 Problem Definition

4.10.2Velocity Analysis

4.10.3 Acceleration Analysis

4.10.4 Static Analysis

4.10.5 Dynamic Analysis

4.10.6 Geometry Analysis

Chapter 5 TYRE CHARACTERISTICS AND MODELLING

5.1 Introduction

5.2 Tyre Axis Systems and Geometry

5.2.1 The SAE J2407and ISO 8855 Tyre Axis Systems

5.2.2 Definition of Tyre Radii

5.2.3 Tyre Asymmetry

5.3 The Tyre Contact Patch

5.3.1 Friction

5.3.2 Pressure Distribution in the Tyre Contact Patch

5.4. Tyre Force and Moment Characteristics

5.4.1 Components of Tyre Force and Stiffness

5.4.2 Normal (Vertical) Force Calculations

5.4.3 Longitudinal Force in a Free Rolling Tyre (Rolling Resistance)

5.4.4 Braking Force

5.4.5 Driving Force

5.4.6 Generation of Lateral Force and Aligning Moment

5.4.7 The Effect of Slip Angle

5.4.8 The Effect of Camber Angle

5.4.9 Combinations of Camber and Slip Angle

5.4.10 Overturning Moment

5.4.11 Combined Traction and Cornering (Comprehensive Slip)

5.4.12 Relaxation Length

5.5 Experimental Testing

5.6 Tyre Modelling

5.6.1 Overview

5.6.2 Calculation of Tyre Geometry and Velocities

5.6.3 Road Surface/Terrain Definition

5.6.4 Interpolation Methods

5.6.5 The "Magic Formula" Tyre Model

5.6.6 The Fiala Tyre Model

5.6.7 The Harty Tyre Model

5.68 Tyre Models for Durability Analysis

5.7 Implementation with MBS

5.7.1 MSC.ADAMS Virtual Tyre Rig Model

5.8. Examples of Tyre Model Data

5.9 Case Study 6 - Comparison of Handling Tyre Models

Chapter 6 MODELLING AND ASSEMBLY OF THE FULL VEHICLE

6.1 Introduction

6.2 The Vehicle Body

6.3 Measured Outputs

6.4 Suspension System Representation

6.4.1 Overview

6.4.2 Lumped Mass Model

6.4.3 Equivalent Roll Stiffness Model

6.4.4 Swing Arm Model

6.4.5 Linkage Model

6.4.6 The Concept Suspension Approach

6.5 Modelling of Springs and Dampers

6.5.1 Treatment in Simple Models

6.5.2 Modelling Leaf Springs

6.6 Anti-Roll Bars

6.7 Determination of Roll Stiffness for the Equivalent Roll Stiffness Model

6.8 Aerodynamic Effects

6.9 Modelling of Vehicle Braking

6.10 Modelling Traction

6.11 Other Driveline Components

6.12 The Steering System

6.12.1 Modelling the Steering Mechanism

6.12.2 Steering Ratio

6.12.3 Steering Inputs for Vehicle Handling Manoeuvres

6.13 Driver Behaviour

6.13.1 Steering Controllers

6.13.2 A Path Following Controller Model

6.13.3 Body Slip Angle Control

6.13.4 Two-Loop Driver Model

6.14 Case Study 7 - Trajectory Preparation for a NATO Lane Change

6.15 Case Study 8 - Comparison of Full Vehicle Handling Models

6.16 Summary

Chapter 7 SIMULATION OUTPUT AND INTERPRETATION

7.1 Introduction

7.2 Case Study 9 - Variation in Measured Data

7.3 A Vehicle Dynamics Overview

7.3.1 Travel on a Curved path

7.3.2 The Classical Treatment

7.3.2.1 Low Speed Behaviour

7.3.2.2 Higher Speed Linear Region Behaviour

7.3.2.3 Non-linear Region

7.3.3 The Subjective/Objective Problem

7.3.4 Mechanisms for Generating Under- and Oversteer

7.4 Transient Effects

7.5 Steering Feel as a Subjective Modifier

7.6 Roll as an Objective and Subjective Modifier

7.7 Frequency Response

7.8 The Problems Imposed by …

7.8.1 Circuit Racing

7.8.2 Rallying

7.8.3 Accident Avoidance

7.9 The Use of Analytical Models with a Signal-to-Noise Ratio Approach

7.10 Some Consequences of using Signal-to-Noise Ratio

Chapter 8 ACTIVE SYSTEMS

8.1 Introduction

8.2 Active Systems

8.2.1 Full Authority Active Suspension and Variable Damping

8.2.2 Brake-Based Systems

8.2.3 Active Steering Systems

8.2.4 Active Camber Systems

8.2.5 Active Torque Distribution

8.3 Which Active System?

REFERENCES

APPENDIX A Vehicle Model System Schematics and Data Sets

APPENDIX B FORTRAN TYRE MODEL SUBROUTINES

APPENDIX C GLOSSARY OF TERMS

APPENDIX D STANDARDS FOR PROVING GROUND TESTS

 
 
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