Dynamics of Wheel-Soil Systems: A Soil Stress and Deformation-Based Approach, 1st Edition (Hardback) book cover

Dynamics of Wheel-Soil Systems

A Soil Stress and Deformation-Based Approach, 1st Edition

By Jaroslaw A. Pytka

CRC Press

331 pages | 174 B/W Illus.

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pub: 2012-08-28
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Why is knowledge of soil stress and deformation state important for off-road locomotion? How do you measure soil stress and deformation under wheel loads? What are the actual values of stresses and deformation in soil or snow under a passing wheel? Providing answers to these questions and more, Dynamics of Wheel–Soil Systems: A Soil Stress and Deformation-Based Approach is a practical reference for anyone who works with experiment design and data analysis of soil stress and deformation measurements under vehicle load.

Based on the author’s 15 years of experience in field experimentation on wheel–soil dynamics, the book describes methods and devices for soil stress and deformation measurements and presents numerical data from full-scale field experiments. These methods offer practical solutions to methodological problems that may arise during the design and preparation of field experiments.

  • Provides technical information on measuring, modeling, and optimizing off-road vehicle traction—including a novel method for describing off-road traction
  • Provides rare experimental data on soil stress and deformation under a variety of wheeled and tracked vehicles
  • Supplies solutions for designing, building, and using soil or snow pressure transducers and sensors
  • Compiles original experimental data on soil degradation due to agricultural machinery traffic and soil compaction
  • Explains how to create dynamic models of wheel–soil systems based on experimental data

A valuable reference on an important area of terramechanics, this book shows how to analyze and model wheel–soil interactions to create more effective designs for a range of vehicle types.

Table of Contents

Introduction to Wheel–Soil Systems

Ground Vehicles and Their Running Gears

Major Research Problems


Measurement of Soil Stress and Deformation

Soil Stress Measurements: Introduction

Characterisation of Soil Stress Transducers

Strain Gage Pressure Transducers for Soils

Stress State Transducer (SST)

Soil Deformation Determination



Soil Stress and Deformation State: Investigations in Monolith Soil Samples


Effect of Static Load and Soil Stress and Deformation in Loamy Luvisol

Effects Deformation Rate on Soil Stress and Deformation State in Loess


Stress State under Wheeled Vehicle Loads


Field Experiment Preparation

Analysis of Principal Stresses

Effect of Vehicle Loading and Reduced Inflation Pressure

Effects of Repeated Rolling

Analysis of Octahedral Stresses

Relationships of Soil Stress and Drawbar Pull

Final Discussion and Concluding Remarks


Stress State under Tracked Vehicle Loads


Experimental Methods

Analysis of Soil Stress State under Loading by Tracked Vehicles

Determination of Soil Stress–Strain Relationships

Effects of Rubber Pads on Soil Stress and Tracked Vehicle Traction

Final Conclusions


Wheel–Soil Dynamics for Aircraft Tyres on Unsurfaced Airfields


Soil Stress State under Loading of Landing Aircraft

Rolling Resistance Coefficients for Aircraft Tyres on Unsurfaced Airfields

Effect of Grassy Surface on Take-Off Distance

Proposed Method for Airfield Surface Evaluation and Classification



Snow Stress State under Ground Vehicle Loads


Snow Stress Measurement Methods

Determining Snow Stress under Loading of Grooming Machine

Determination of Winter Traction and Snow Stresses under Military Truck Loading

Effects of Snow Skis on Snow Stresses and Aircraft Ground Performance



Modelling of Wheel–Soil System Based on Soil Stress and Deformation State Analysis


Modelling Off-Road Traction

Modelling Soil Stress State by System Identification (SI)

Modelling Dynamic Effects of Wheel–Soil System





About the Author

Jaroslaw Alexander Pytka is a research engineer and instructor of undergraduate and graduate students of automotive technology at the Lublin University of Technology, Poland. Dr. Pytka earned an MS in automotive technology from the Lublin University of Technology in 1992, and a Ph.D. in soil physics from the Institute of Agrophysics in Lublin. His major research interest is wheel–soil interaction analysis with a focus on experimental studies. Dr. Pytka has authored or coauthored more than 50 papers and is a reviewer for the Journal of Terramechanics.

About the Series

Ground Vehicle Engineering

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