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2023 | Buch

On-Road Tire Mechanics Kapitel lesen Erstes Kapitel lesen

Road and Off-Road Vehicle Dynamics

verfasst von: Moustafa El-Gindy, Zeinab El-Sayegh

Verlag: Springer International Publishing

Enthalten in: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik"

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SUCHEN

Über dieses Buch

This book introduces and provides a detailed understanding of on- and off-road vehicle dynamics. It discusses classical on-road tyre mechanics, including finite element tyre modelling and validation, using a combination of theoretical and experimental data sets. Chapters explore new computational techniques that describe terrain models and combined to develop better off-road vehicle models, and focus is placed on terrain characterization and modelling, using two popular modelling techniques, as well as performance characteristics of off-road vehicles - including rolling and driven combinations, traction, and steering. The effect of multi-pass and soil compaction on tyre performance is described as well.

The book presents a unique neuro-tyre model for both on-road and off-road situations, capable of computing the steering, braking characteristics, and soil compaction. Road vehicle characteristics are described, including the stability and control, roll centre and roll axis, and rollover mechanics. The road vehicle braking performance is also described, including the brake components, choice of brake, and the transient load transfer. Finally, the dynamics and control of multi-wheel combat vehicles are presented and described extensively.

The book is dedicated to undergraduate and graduate engineering students, in addition to researchers, and the automotive industry. As well as provide the readers with a better understanding of vehicle dynamics and soil mechanics. The book is also beneficial for automotive industries looking for a quick and reliable model to be implemented in their main software.

Inhaltsverzeichnis

Frontmatter
Chapter 1. On-Road Tire Mechanics
Abstract
This chapter starts with an introduction to the history of wheels and tires and presents the construction of various types of tires, such as the radial-ply and cross-ply tires. The longitudinal and lateral forces and moments developed by the tires are discussed in detail. Analytical, empirical, and semi-empirical models of pneumatic tires are systematically developed to study the tractive, braking, ride, and cornering behavior of the vehicle, which are also presented in this chapter.
Moustafa El-Gindy, Zeinab El-Sayegh
Chapter 2. Off-Road Terrain Characterization and Modeling
Abstract
As off-road vehicles are becoming more demanding, the study of severe conditions is becoming more critical. During wintertime, the tire may be subjected to snow falling or accumulated snow layers on the ground, which can severely change the performance of the vehicle.
Moustafa El-Gindy, Zeinab El-Sayegh
Chapter 3. Performance Characteristics of Off-Road Vehicles
Abstract
This chapter focuses on the performance characteristics of off-road vehicles by investigating the terrain-dependent in-plane and out-of-plane rigid ring model parameters at different conditions. The in-plane rigid ring model parameters are the longitudinal tire stiffness, vertical stiffness, and rolling resistance coefficient. The out-of-plane rigid ring model parameters include the lateral stiffness, cornering stiffness, self-aligning moment stiffness, and relaxation length.
Moustafa El-Gindy, Zeinab El-Sayegh
Chapter 4. Road Vehicle Stability and Control
Abstract
The handling characteristics of a vehicle can be evaluated based on the vehicle response to steering input. The control of the direction of motion of a vehicle and its ability to stabilize its direction of motion against external disturbances are the basic issues in vehicle handling.
Moustafa El-Gindy, Zeinab El-Sayegh
Chapter 5. Vehicle Rollover Dynamics
Abstract
Although a technically correct definition of rollover would be the state at which the overall center of gravity (CG) of the vehicle has moved laterally past the vehicle’s “balance point”, researchers typically define the rollover point or rollover threshold as the state where the load from one side of the vehicle has transferred to the other side. This more conservative definition of rollover is standard in the literature for the main reason of safety.
Moustafa El-Gindy, Zeinab El-Sayegh
Chapter 6. Road Vehicle Tractive Performance
Abstract
In this chapter, road vehicle performance characteristics are discussed. The two main characteristics are the tractive and braking efforts. Tractive effort is developed by the tires in order to overcome the resisting forces acting on a vehicle which determines the performance potential of a vehicle.
Moustafa El-Gindy, Zeinab El-Sayegh
Chapter 7. Road Vehicle Braking Performance
Abstract
The general requirements that a vehicle braking system should meet are self-evident. The brakes should be capable of stopping the vehicle safely within the shortest distance possible on all types of road surfaces and in all motoring conditions. During braking, the vehicle should not deviate to one side or the other, and should be completely under the control of the driver, and the brakes must not interact with other vehicle components.
Moustafa El-Gindy, Zeinab El-Sayegh
Chapter 8. Multi-wheel Combat Vehicle Dynamics and Control
Abstract
This chapter presents extensive discussions of multi-wheeled compact vehicles, in particular \(8 \times 8\) configurations. Off-road vehicle behavior depends not only on the total power provided by the engine but also on the power distribution among the drive axles/wheels. In turn, this distribution is primarily regulated by the drivetrain layout and the torque distribution devices. A number of simulation studies, during longitudinal and cornering maneuvers, are conducted to investigate the contribution of typical significant parameters.
Moustafa El-Gindy, Zeinab El-Sayegh
Chapter 9. Suspension Characteristics
Abstract
Street-driven cars and trucks use a suspension system to keep the tires on the road and to provide acceptable riding comfort. A vehicle with a solid suspension or no suspension would bounce off the ground when the tires hit a bump. The purpose of the suspension system is to provide the vehicle with
Moustafa El-Gindy, Zeinab El-Sayegh
Chapter 10. Underride Protection Devices
Abstract
Improvements to highway safety are in continual demand. One of the most severe instances of vehicle collision occurs as a result of vehicle weight and sizing mismatch. The fitment of Underride Protection Devices (UPDs) on trucks and trailers is studied as a method to improve crash compatibility between passenger vehicles and trucks and/or trailers involved in head-on, rear end, or side highway crashes. While some countries require the use of UPDs, no such regulation exists in North America. North America’s use of Conventional Tractors also presents a variation to Cab-over Engine Tractors popular in Europe.
Moustafa El-Gindy, Zeinab El-Sayegh
Metadaten
Titel
Road and Off-Road Vehicle Dynamics
verfasst von
Moustafa El-Gindy
Zeinab El-Sayegh
Copyright-Jahr
2023
Electronic ISBN
978-3-031-36216-3
Print ISBN
978-3-031-36215-6
DOI
https://doi.org/10.1007/978-3-031-36216-3

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