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Terramechanics and Off-Road Vehicle Engineering, 2nd Edition by J.Y. Wong

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Chapter 5

Characterization of the Shearing Behaviour of Terrains

A vehicle applies shear load to the terrain surface through its running gear, which results in the development of thrust and associated slip. To predict the tractive performance of an off-road vehicle, it is essential to measure the shear stress–shear displacement relationship under various normal pressures and to determine the shear strength of the terrain. This chapter describes the results of the measurement and characterization of the shearing behaviour of a variety of terrains, including mineral terrain, muskeg, and snow-covered terrain. The measurements were made using a vehicle-mounted bevameter with the associated computerized data acquisition and processing system described ...

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