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Evaluation of soil-tire interface pressure distributions and areas resulting from various tire and track technologies and configurations

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2021 ASABE Annual International Virtual Meeting  2100889.(doi:10.13031/aim.202100889)
Authors:   Md. Rayhan Shaheb, Andrew Klopfenstein, Ryan W. Tietje, Christopher R. Wiegman, Claudia Di Dio, Alberto Scarfagna, Kevin Herink, Norberto Herbener, Scott A. Shearer
Keywords:   Agricultural tires, electronic scanner (sensor), soil-tire interface, contact pressure distribution, tire footprint.

Abstract. An investigation of in-field agricultural tires using a dedicated electronic scanner (sensor) were conducted during November 2019. The objective was to evaluate the soil-tire interface pressure distributions resulting from both tire and track technologies and for different tire inflation pressure. A wheeled powershift tractor (Case IH, Steiger 580) was equipped with different agricultural tires; (single LSW VF 1100/45R46 195D and single and dual VF800/70R38 184D,) and Quadtrac (Case IH, Steiger 580) tracked tractor were used. A contact pressure sensing mat (electronic scanner) was buried 15 cm below the soil surface and was interfaced to a laptop computer for data acquisition and storage. The corresponding tractor configurations, under different inflation pressures, were then operated over the buried contact pressure sensing mat. Five testing configurations for each tire setup and inflation pressure were conducted under static and dynamic conditions. The electronic scanner successfully provided pressure distribution footprints (2D and 3D) of the soil-tire interaction under static and dynamic conditions. Data were collected from both front and rear right tires and tracks when operated over the sensor mat. Each data frame provided 192 x 192 data points and reported average, peak and minimum pressures; and contact area, width, and length of the tire footprint. This study provides an opportunity to compare tire construction and track technologies for their influence on interface contact pressures and areas to support improved predictions of tractive efficiency and soil response to traffic events.

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