Table of contents
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. 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. 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. 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. 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. 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. 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.
Vehicle Dynamics: Theory and Application Reza N. Jazar
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. 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. 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.
Vehicles are multiple-DOF systems as is shown in Figure Coverage includes front, rear, and four wheel steering systems, as well as the advantages and disadvantages of different steering schemes. Individual sections devoted to handling, ride, and components will be beneficial to students as future automotive designers.
This book includes a detailed review of practical design considerations and a number of practical examples and exercises. Vehicle Dynamics: Theory and Application is appropriate for senior undergraduate and first year graduate students in mechanical engineering. The contents in this book are presented at a theoretical-practical level.
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It explains vehicle dynamics concepts in detail, concentrating on their practical use. Related theorems and formal proofs are provided, as are real-life applications. Students, researchers and practicing engineers alike will appreciate the user-friendly presentation of a wealth of topics most notably steering, handling, ride, and related components. Reza N. His main research areas are nonlinear dynamics, robotics, control, and MEMs. He's written extensively on many diverse topics in applied mathematics and mechanical engineering.
He is also the author of Theory of Applied Robotics: Kinematics, Dynamics and Control and regularly teaches undergraduate and graduate-level courses in mechanical engineering. Visit Seller's Storefront. Books may be returned for any reason within two weeks of delivery. We accept Visa, Mastercard, check, PayPal or money order.
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