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2017 | Book

Tire Dynamics Read chapter Read first chapter

Vehicle Dynamics

Theory and Application

Author: Reza N. Jazar

Publisher: Springer International Publishing

Part of: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik"

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About this book

This intermediate textbook is appropriate for students in vehicle dynamics courses, in their last year of undergraduate study or their first year of graduate study. It is also appropriate for mechanical engineers, automotive engineers, and researchers in the area of vehicle dynamics for continuing education or as a reference. It addresses fundamental and advanced topics, and a basic knowledge of kinematics and dynamics, as well as numerical methods, is expected.The contents are kept at a theoretical-practical level, with a strong emphasis on application. This third edition has been reduced by 25%, to allow for coverage over one semester, as opposed to the previous edition that needed two semesters for coverage. The textbook is composed of four parts:Vehicle Motion: covers tire dynamics, forward vehicle dynamics, and driveline dynamics
Vehicle Kinematics: covers applied kinematics, applied mechanisms, steering dynamics, and suspension mechanisms
Vehicle Dynamics: covers applied dynamics, vehicle planar dynamics, and vehicle roll dynamics
Vehicle Vibration: covers applied vibrations, vehicle vibrations, and suspension optimization
Vehicle dynamics concepts are covered in detail, with a concentration on their practical uses. Also provided are related theorems and formal proofs, along with case examples. Readers appreciate the user-friendly presentation of the science and engineering of the mechanical aspects of vehicles, and learn how to analyze and optimize vehicles’ handling and ride dynamics.

Table of Contents

Frontmatter

Vehicle Motion

Frontmatter
Chapter 1. Tire Dynamics
Abstract
The tire is the main component of a vehicle interacting with the road. The performance of a vehicle is mainly influenced by the characteristics of its tires. Tires affect a vehicle’s handling, traction, ride comfort, and fuel consumption. To understand its importance, it is enough to remember that a vehicle can maneuver only by longitudinal, vertical, and lateral force systems generated under the tires.
Reza N. Jazar
Chapter 2. Forward Vehicle Dynamics
Abstract
Straight motion of an ideal rigid vehicle is the subject of this chapter. We ignore air friction and examine the load variation under the tires to determine the vehicle’s limits of acceleration, road grade, and kinematic capabilities.
Reza N. Jazar
Chapter 3. Driveline Dynamics
Abstract
The maximum achievable acceleration of a vehicle is limited by two factors: maximum torque at driving wheels, and maximum traction force at tireprints. The first one depends on engine and transmission performance, and the second one depends on tire-road friction. In this chapter, we examine engine and transmission performance.
Reza N. Jazar

Vehicle Kinematics

Frontmatter
Chapter 4. Applied Kinematics
Abstract
Position, velocity, and acceleration are called kinematics information. Rotational position analysis is the key to calculate kinematics of relatively moving rigid bodies. In this chapter, we review kinematics and show applied methods to calculate the relative kinematic information of rigid bodies. A vehicle has many moving sub-systems such as suspensions, and the vehicle can be treated as a moving rigid body in an inertia coordinate frame.
Reza N. Jazar
Chapter 5. Applied Mechanisms
Abstract
The mechanisms that are used in vehicle subsystems are mostly made of four-bar linkages. Double A-arm for independent suspension, and trapezoidal steering are two subsystems examples in vehicle. In this chapter, we review the analysis and design methods for such mechanisms.
Reza N. Jazar
Chapter 6. Steering Dynamics
Abstract
To maneuver a vehicle we need a steering mechanism to turn steerable wheels. Steering dynamics which we review in this chapter, introduces the requirements and challenges to have a steering system to guide a vehicle on non-straight paths.
Reza N. Jazar
Chapter 7. Suspension Mechanisms
Abstract
The suspension is what links the wheels to the vehicle chassis and allows relative motion. This chapter covers the suspension mechanisms, and discusses the possible relative motions between the wheel and the vehicle chassis. The wheels, through the suspension linkage, must propel, steer, and stop the vehicle, and support the associated forces.
Reza N. Jazar

Vehicle Dynamics

Frontmatter
Chapter 8. Applied Dynamics
Abstract
Dynamics of a rigid vehicle may be considered as the motion of a rigid body with respect to a fixed global coordinate frame. The principles of Dynamics as well as Newton and Euler equations of motion that describe the translational and rotational motion of the rigid body are reviewed in this chapter.
Reza N. Jazar
Chapter 9. Vehicle Planar Dynamics
Abstract
In this chapter we develop a dynamic model for a rigid vehicle in a planar motion. The planar model is applicable whenever the forward, lateral and yaw velocities are important and are enough to examine the behavior of a vehicle.
Reza N. Jazar
Chapter 10. Vehicle Roll Dynamics
Abstract
In this chapter, we develop a dynamic model for a rigid bicycle vehicle having forward, lateral, yaw, and roll motions. The model of a rollable rigid vehicle is more exact and more effective compared to the rigid bicycle vehicle planar model. Using this model, we are able to analyze the roll behavior of a vehicle as well as its maneuvering.
Reza N. Jazar

Vehicle Vibration

Frontmatter
Chapter 11. Applied Vibrations
Abstract
Vibration is an inevitable phenomena in vehicle dynamics. In this chapter, we review the principles of vibrations, analysis methods, and their applications, along with the frequency and time responses of vibrating systems. Special attention is devoted to frequency response analysis, because most of the optimization methods for vehicle suspensions and vehicle vibrating components are based on frequency responses.
Reza N. Jazar
Chapter 12. Vehicle Vibrations
Abstract
Vehicles are multiple-DOF systems as is shown in Figure 12.1. The vibration behavior of a vehicle, which is called ride or ride comfort, is highly dependent on the natural frequencies and mode shapes of the vehicle. In this chapter, we review and examine the applied methods of determining the equations of motion, natural frequencies, and mode shapes of different models of vehicles.
Reza N. Jazar
Chapter 13. Suspension Optimization
Abstract
In this chapter, we examine a linear one degree-of-freedom (DOF) base excited vibration isolator system as the simplest model for a vibration isolator and vehicle suspension. Based on a root mean square (RMS) optimization method, we develop a design chart to determine the optimal damper and spring for the best vibration isolation and ride comfort.
Reza N. Jazar
Appendix A. Frequency Response Curves
Abstract
There are four types of one-DOF harmonically excited systems as shown in Figure.
Reza N. Jazar
Appendix B. Trigonometric Formulas
Abstract
Definitions in Terms of Exponentials
Reza N. Jazar
Appendix C. Unit Conversions
Abstract
General Conversion Formulas
Reza N. Jazar
Backmatter
Metadata
Title
Vehicle Dynamics
Author
Reza N. Jazar
Copyright Year
2017
Electronic ISBN
978-3-319-53441-1
Print ISBN
978-3-319-53440-4
DOI
https://doi.org/10.1007/978-3-319-53441-1

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