Railroad Vehicle Dynamics: A Computational Approach, 1st Edition (Hardback) book cover

Railroad Vehicle Dynamics

A Computational Approach, 1st Edition

By Ahmed A. Shabana, Khaled E. Zaazaa, Hiroyuki Sugiyama

CRC Press

360 pages | 117 B/W Illus.

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pub: 2007-07-23
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Description

The methods of computational mechanics have been used extensively in modeling many physical systems. The use of multibody-system techniques, in particular, has been applied successfully in the study of various, fundamentally different applications.

Railroad Vehicle Dynamics: A Computational Approach presents a computational multibody-system approach that can be used to develop complex models of railroad vehicle systems. The book examines several computational multibody-system formulations and discusses their computer implementation. The computational algorithms based on these general formulations can be used to develop general- and special-purpose railroad vehicle computer programs for use in the analysis of railroad vehicle systems, including the study of derailment and accident scenarios, design issues, and performance evaluation.

The authors focus on the development of fully nonlinear formulations, supported by an explanation of the limitations of the linearized formulations that are frequently used in the analysis of railroad vehicle systems. The chapters of the book are organized to guide readers from basic concepts and definitions through a final understanding of the utility of fully nonlinear multibody- system formulations in the analysis of railroad vehicle systems.

Railroad Vehicle Dynamics: A Computational Approach is a valuable reference for researchers and practicing engineers who commonly use general-purpose, multibody-system computer programs in the analysis, design, and performance evaluation of railroad vehicle systems.

Table of Contents

INTRODUCTION

Railroad Vehicles and Multibody-System Dynamics

Constrained Dynamics

Geometry Problem

Contact Theories

General Multibody Railroad Vehicle Formulations

Specialized Railroad Vehicle Formulations

Linearized Railroad Vehicle Models

Motion Stability

Motion Scenarios

DYNAMIC FORMULATIONS

General Displacement

Rotation Matrix

Velocities and Accelerations

Newton-Euler Equations

Joint Constraints

Augmented Formulation

Trajectory Coordinates

Embedding Technique

Interpretation of the Methods

Virtual Work

RAIL AND WHEEL GEOMETRY

Theory of Curves

Geometry of Surfaces

Rail Geometry

Definitions and Terminology

Geometric Description of the Track

Computer Implementation

Track Preprocessor

Wheel Geometry

CONTACT AND CREEP-FORCE MODELS

Hertz Theory

Creep Phenomenon

Wheel/Rail Contact Approaches

Creep-Force Theories

MULTIBODY CONTACT FORMULATIONS

Parameterization of Wheel and Rail Surfaces

Constraint Contact Formulations

Augmented Constraint Contact Formulation (ACCF)

Embedded Constraint Contact Formulation (ECCF)

Elastic Contact Formulation-Algebraic Equations (ECF-A)

Elastic Contact Formulation-Nodal Search (ECF-N)

Comparison of Different Contact Formulations

Planar Contact

IMPLEMENTATION AND SPECIAL ELEMENTS

General Multibody-System Algorithms

Numerical Algorithms-Constraint Formulations

Numerical Algorithms-Elastic Formulations

Calculation of the Creep Forces

Higher Derivatives and Smoothness Technique

Track Preprocessor

Deviations and Measured Data

Special Elements

Maglev Forces

Static Analysis

Numerical Comparative Study

SPECIALIZED RAILROAD VEHICLE FORMULATIONS

General Displacement

Velocity and Acceleration

Equations of Motion

Trajectory Coordinate Constraints

Single-Degree-of-Freedom Model

Two-Degree-of-Freedom Model

Linear Hunting Stability Analysis

CREEPAGE LINEARIZATION

Background

Transformation and Angular Velocity

Euler Angles

Linearization Assumptions

Longitudinal and Lateral Creepages

Spin Creepage

Newton-Euler Equations

Concluding Remarks

APPENDIX A - Contact Equations

APPENDIX B - Elliptical Integrals

REFERENCES

INDEX

Subject Categories

BISAC Subject Codes/Headings:
SCI041000
SCIENCE / Mechanics / General
TEC009070
TECHNOLOGY & ENGINEERING / Mechanical