[PDF] [2010] Ground Vehicle Dynamics

DOWNLOAD MORE EBOOKS, MAGAZINES, & PDFS: http://buyabook.ws/download-ebooks-magazines-pdfs-more/ BOOK INFO: Ground Vehicle Dynamics is devoted to the mathematical modelling and dynamical analysis of ground vehicle systems composed of the vehicle body, the guidance and suspension devices and the corresponding guideway. Automobiles on uneven roads and railways on flexible tracks are prominent representatives of ground vehicle systems. All these different kinds of systems are treated in a common way by means of analytical dynamics and control theory. In addition to a detailed modelling of vehicles as multibody systems, the contact theory for rolling wheels and the modelling of guideways by finite element systems as well as stochastic processes are presented. As a particular result of this integrated approach the state equations of the global systems are obtained including the complete interactions between the subsystems considered as independent modules. The fundamentals of vehicle dynamics for longitudinal, lateral and vertical motions and vibrations of automobiles and railways are discussed in detail. Content Level » Research Keywords » Automobiles - Longitudinal, lateral, vertical motions - Railways - Vehicle assessment - Vehicle models Table of contents System Definition and Modeling.- Vehicle Models.- Models for Support and Guidance Systems.- Guideway Models.- Models for Vehicle-Guideway-Systems.- Assessment Criteria.- Computational Methods.- Longitudinal Motions.- Lateral Motions.- Vertical Motions. Table of Contents Preface Preface to the German Edition Contents List of Problems and their Solutions 2.1 Longitudinal motion of an automobile 2.2 Rotation matrix for a railway wheelset 2.3 Angular velocity of a rigid body 2.4 Angular velocity of a railway wheelset 2.5 Relative motion during cornering 2.6 Kinematic rolling of a cylinder 2.7 Kinematic hunting of a railway wheelset 2.8 Inertia tensor of a railway wheelset 2.9 Equations of motion of a railway wheelset 2.10 Inertia forces at a magnetically levitated (maglev) vehicle 2.11 Lagrangian equations of motion for a differential gear 2.12 Equations of motion for the bounce and pitch vibrations of an automobile 2.13 Equations of motion of a drawbar trailer 2.14 Application of Neweul formalism on a vehicle model with f = 10 degrees of freedom 3.1 Mathematical model of a layered leaf spring 3.2 Slip for a conical wheel 3.3 Contact area and contact forces for wheel-rail contact 3.4 Contact forces considering approximated saturation 3.5 Contact forces and linear equations of motion for a railway wheelset 3.6 Contact forces for a road vehicle 3.7 Contact forces and linear equations of motion for a drawbar trailer 4.1 Modal analysis of a double-span beam 4.2 White and colored noise 5.1 State equations of the vertical motion of an actively controlled automobile 6.1 Stability of a system of second order 7.1 Stability of the hunting motion of a railway wheelset 7.2 Unbalance excitation of wheel vibrations 7.3 Random vibrations of a single wheel 7.4 Harmonic linearization of self-excited vibrations 7.5 Harmonic linearization of a forced oscillator 8.1 Control process of a vehicle wheel 8.2 Acceleration of an automobile 9.1 Driving stability of a road vehicle 9.2 Stabilization of railway wheelsets 1. System Definition and Modeling 2. Vehicle Models 2.1 Elements of Multibody Systems 2.2 Kinematics 2.2.1 Frames of Reference for Vehicle Kinematics 2.2.2 Kinematics of a Rigid Body in an Inertial Frame 2.2.3 Kinematics of a Rigid Body in a Moving Reference Frame 2.2.4 Kinematics of Multibody Systems 2.3 Dynamics 2.3.1 Inertia Properties 2.3.2 Newton-Euler Equations 2.3.3 Principles of d’Alembert and Jourdain 2.3.4 Energy Considerations and Lagrange’s Equations 2.4 Equations of Motion for Multibody Systems 2.5 Formalisms for Multibody Systems 2.5.1 Non-recursive Formalisms 2.5.2 Recursive Formalisms 2.5.2.1 Kinematics 2.5.2.2 Newton-Euler Equations 2.5.2.3 Equations of Motion 2.5.2.4 Recursion 3. Models for Support and Guidance Systems 3.1 Models for Passive Spring and Damper Systems 3.2 Models of Force Actuators 3.2.1 Models of Magnetic Actuators 3.2.2 General Linear Model of Force Actuators 3.3 Comparison of Passive and Active Elements 3.4 Contact Forces between Wheel and Guideway 3.4.1 Rolling of Rigid and Deformable Wheels 3.4.2 Definition of the Rigid Body Slip 3.4.3 Contact Forces for Elastic Wheels on Elastic Rails 3.4.3.1 Linear Law of Contact Forces 3.4.3.2 Contact Forces Considering Saturation 3.4.4 Contact Forces of Elastic Tires on a Rigid Road 3.4.4.1 The Brush Model 3.4.4.2 Contact Forces for Pure Lateral Slip 3.4.4.3 Contact Force for Pure Longitudinal Slip 3.4.4.4 Linear Contact Force Law 3.4.4.5 Contact Forces for Simultaneous Longitudinal and Lateral Slip 4. Guideway Models 4.1 Models for Elastic Guideways 4.1.1 Models for Periodically Pillared Beams 4.1.2 Modal Analysis of Beam Structures for Bending Vibrations 4.1.3 Models for Continuously Bedded Beams 4.2 Perturbation Models for Rigid Guideways 4.2.1 Mathematical Description of Stochastic Processes 4.2.2 Models for Unevenness Profiles 4.2.3 Models for Vehicle Excitation Processes 5. Models for Vehicle-Guideway-Systems 5.1 State Equations of the Subsystems 5.2 State Equations of the Complete System 6. Assessment Criteria 6.1 Driving Stability 6.2 Ride Comfort 6.2.1 Deterministic Excitation 6.2.2 Stochastic Excitation 6.2.3 Shape Filter for the Human Perception 6.2.4 Revised Standards for Human Exposure to Whole-body Vibration 6.3 Ride Safety 6.4 Durability of Components 7. Computational Methods 7.1 Numerical Simulation 7.1.1 Simulation of Vertical Motions of Vehicles 7.2 Linear Systems 7.2.1 Stability 7.2.2 Frequency Response Analysis 7.2.3 Random Vibration 7.2.3.1 Spectral Density Analysis 7.2.3.2 Covariance Analysis 7.3 Nonlinear Systems 7.3.1 Harmonic Linearization 7.3.2 Statistical Linearization 7.3.3 Investigation of Linearized Systems 7.4 Optimization Problems 8. Longitudinal Motions 8.1 Elastic Wheel 8.2 Entire Vehicle 8.3 Aerodynamic Forces and Torques 8.4 Driving and Braking Torques 8.5 Driving Performance 9. Lateral Motions 9.1 Handling of Road Vehicles 9.1.1 Elastic Wheel 9.1.2 Vehicle Model 9.1.3 Steady-state Cornering 9.1.4 Driving Stability 9.1.5 Experimental Studies 9.2 Driving Stability of Railways 9.2.1 Equation of Motion of a Railway Wheelset 9.2.2 Stability of a Free Wheelset 10. Vertical Motions 10.1 Principles of Vehicles Suspension 10.2 Random Vibrations of a Two Axle Vehicle 10.3 A Complex Vehicle Model 10.4 Magnetically Levitated Vehicles A: Optimal Control of Multivariable Systems A.1 Mathematical Model A.2 Task Formulation and Structure Issues A.3 Structure and Properties of Controllers A.4 Controller Design A.4.1 Controller Design by Pole Assignment A.4.2 Optimal Controller Due to a Quadratic Integral Criterion A.4.3 Choice of Poles and Weighting Matrices A.5 Structure and Properties of Observers A.6 Observer Design A.6.1 Observer Design with Pole Assignment A.6.2 Optimal Observer Due to a Quadratic Integral Criterion A.7 Structure of (Optimal) Controlled Multivariable Systems B: Key Words B.1 English - German B.2 Deutsch - Englisch References Index

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rpag (2011-07-03)

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