Measurement and Frequency Analysis of Dynamic Vertical Wheel Load of Farm Tractor

DOI Web Site 7 References
  • NGUYEN Van Nang
    The United Graduate School of Agricultural Sciences, Kagoshima University The Japanese Society of Agricultural Machinery
  • MATSUO Takaaki
    Department of Agricultural Sciences, Saga University The Japanese Society of Agricultural Machinery
  • KOUMOTO Tatsuya
    Department of Agricultural Sciences, Saga University
  • INABA Shigeki
    The Japanese Society of Agricultural Machinery Department of Agricultural Sciences, Saga University

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Other Title
  • 農耕タイヤの動荷重の測定および周波数分析

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Abstract

Field experiments investigated the vertical wheel-load variations of the left rear wheel of a tractor driven at different combinations of static loads and tire pressures. The dynamic wheel load was measured on rigid and deformable grounds using strain-gage-based transducers. Frequency analysis presented a combination of the effects of the ground profile and tire characteristics on wheel-load variations. On an asphalt road, both the nonuniformity of the wheel-tire assembly and tire lugs excited the wheel-load variations at their first- and second-order frequencies, while these self-excitations had less effect as the ground deformability increased during the tests on sandy loam and clay soils. However, the nonuniformity of a low-pressure tire moving on extremely deformable clayey field critically affected the wheel-load fluctuations.

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