Vehicle/Tire/Road Dynamics

Vehicle/Tire/Road Dynamics

Handling, Ride, and NVH

1st Edition - January 1, 2023

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  • Author: Tan Li
  • Paperback ISBN: 9780323901765

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Description

Conventional vehicle dynamics (e.g., handling/braking/cornering) is focused on low-frequency performance while NVH (noise/vibration/harshness) is focused on high-frequency performance. There is also another area called "ride" (comfort/stability) which focuses on mid-frequency. These three areas in the scope of generalized "vehicle dynamics" are among the most important performances of a vehicle. Other important components that affect vehicle dynamics are tire and road effects. Vehicle/Tire/Road Dynamics: Handling, Ride, and NVH presents the connection between NVH and conventional vehicle dynamics where both tire and road play a key role. In this book, there is a chapter for handling dynamics that provides an introduction to ride dynamics, and a chapter for ride dynamics that provides an introduction to NVH, presenting better coherence and synergy between these major areas of vehicle/tire dynamics. Accompanying the fundamental theories, case studies are given to facilitate comprehension. In addition to the experimental implementations, the state-of-the-art approaches to simulating vehicle/tire dynamics are presented from the viewpoint of both industry and academia. This new book bridges the gap for experts in tire or pavement NVH (also tire-pavement interaction noise) and those who are experts in vehicle dynamics.

Key Features

  • Presents a closed loop system for vehicle dynamics covering handling, ride, and NVH
  • Provides insights into how intelligent tire will enhance the autonomous vehicle control and optimize multiple performances especially for electric vehicles
  • Demonstrates how pavement characteristics could greatly influence the vehicle handling/ride/NVH and improve/balance these performances

Readership

Postgraduate students in mechanical/automotive engineering and researchers/engineers in vehicle/tire development

Table of Contents

  • 1. Introduction 

    2. Definitions and Fundamentals 
    2.1. Kinematics and Dynamics 
    2.2. Multi-body System 
    2.3. Vibrations 
    2.4. Acoustics 
    2.5. Mathematics 

    3. Tire and Vehicle Handling Dynamics 
    3.1. Tire Handling Theory 
    3.1.1. Brush Tire Model 
    3.1.2. Magic Formula Tire Model 
    3.1.3. UniTire Tire Model 
    3.1.4. FTire Tire Model 
    3.1.5. CDTire Tire Model 
    3.1.6. Terramechanics Tire Model 
    3.2. Vehicle Handling Theory 
    3.2.1. 2-DOF Bicycle Car Model (Yaw Plane) 
    3.2.2. 7-DOF Full Car Model 
    3.2.3. Multi-body Complete Car Model 
    3.3. Test, Measurement, and Evaluations 
    3.3.1. Tire Force and Moment Testing and Fitting 
    3.3.2. Effect of Tire Category and Inflation Pressure 
    3.3.3. Handling Performance Metrics 
    3.3.4. Subjective Rating (Psycho-Dynamics) 
    3.4. Simulation Approaches 
    3.4.1. Rubber Friction Simulation 
    3.4.2. Tire Force and Moment Simulation 
    3.4.3. Vehicle Maneuver Simulation 

    4. Tire and Vehicle Ride Dynamics 
    4.1. Vehicle Ride Theory 
    4.1.1. SDOF and MDOF Model 
    4.1.2. 2-DOF Quarter Car Model 
    4.1.3. 4-DOF Half Car Model (Pitch Plane) 
    4.1.4. 10-DOF Full Car Model 
    4.2. Tire Ride Theory 
    4.2.1. Tire Stiffness and Damping 
    4.2.2. Tire Modal Analysis 
    4.2.3. Tire and Vehicle Mode Distribution Chart 
    4.3. Test, Measurement, and Evaluations 
    4.3.1. Structural Dynamics Testing 
    4.3.2. Effect of Tire Spec and Boundary Condition on Tire Modes 
    4.3.3. Ride Performance Metrics 
    4.4. Simulation Approaches 
    4.4.1. Tire Modal Simulation 
    4.4.2. Vehicle Ride Simulation 

    5. Tire and Vehicle NVH 
    5.1. Vibration Wave Propagation Theory 
    5.1.1. Tire Vibrations by Road Excitations 
    5.1.2. Structure-Borne Transfer between Tire and Vehicle 
    5.2. Noise Generation and Radiation Theory 
    5.2.1. Tire Noise Radiation 
    5.2.2. Vehicle Panel Noise Radiation 
    5.3. Sound Quality (Harmony) Theory 
    5.3.1. Color of Noise 
    5.3.2. Psychoacoustic Metrics 
    5.3.3. Miscellaneous 
    5.4. Test, Measurement, and Evaluations 
    5.4.1. NVH Measurement Techniques 
    5.4.2. NVH Performance Metrics 
    5.5. Simulation Approaches 
    5.5.1. Tire Pass-by Exterior Noise Simulation 
    5.5.2. Vehicle Cabin Interior Noise Simulation 

    6. Dependence between Handling, Ride, and NVH 
    6.1. Fundamental Tire Material Properties 
    6.1.1. Rubber Hyperelasticity 
    6.1.2. Rubber Viscoelasticity 
    6.1.3. Nonlinear Cord Modulus 
    6.1.4. Thermal Expansion and Creep 
    6.2. Pressure and Deformation Distribution in Tire Contact Patch 
    6.3. Handling Damping and Natural Frequency 
    6.4. Conflicts between Safety and Comfort 
    6.5. Optimization with Active Suspension Control 
    6.6. Braking and Cornering Noise 
    6.7. Vehicle/Tire Fatigue and Durability 

    7. Road Effect on Handling, Ride, and NVH 
    7.1. Surface Profile/Texture Characterization 
    7.2. Influence of Surface Texture on Tire Friction and Rolling Resistance 
    7.3. Influence of Road Profile on Comfort 
    7.4. Influence of Pavement Properties on NVH 
    7.5. Road Dynamics 

    8. Intelligent Tire and Autonomous Vehicle 
    8.1. Tire Sensors and States Estimation/Measurement 
    8.2. Vehicle Control for Desired Motion 

Product details

  • No. of pages: 414
  • Language: English
  • Copyright: © Elsevier 2023
  • Published: January 1, 2023
  • Imprint: Elsevier
  • Paperback ISBN: 9780323901765

About the Author

Tan Li

Tan Li received his B.S. in Automotive Engineering from Tongji University in China with Summa Cum Laude in 2013. He earned his Ph.D. in Mechanical Engineering from Virginia Tech in 2017. He is working at Maxxis Technology Center as a Senior NVH Engineer in Atlanta, GA, leading the projects on NVH (Noise, Vibration and Harshness) and vehicle/tire dynamics. As a lead author/inventor, he has published six conference papers, five journal articles, and two patents. He and his group at Virginia Tech developed a technique to separate the tire/road noise into two components: tread pattern related and road surface related. This technique has been adopted by several tire/vehicle companies, and research institutions.

Affiliations and Expertise

Senior NVH Engineer, Maxxis Technology Center, Maxxis International – USA, Suwanee, GA, USA

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