David Jelinek - ISTVS Student Research Seminar 2022-01-19
Channel: ISTVS
Date: 2022-01-20

David Jelinek | Undergraduate Researcher
Center for Advanced Vehicle Systems
Mississippi State University
Compilation and Analysis of Test Data to Characterize Wheel Performance in Fine-Grained Soils

This presentation will overview expansion of the DROVE dataset (database records for off-road vehicle environments) with fine-grained soil wheel test data. An extensive database was compiled and digitized to improve availability for use in off-road tire performance research. Contributed data originates from field/laboratory tests characterizing tractive performance of wheels operating in dry sands. The overview extends from measurement acquisition to the digitization process and current applications. Important variables describing tire-mobility are summarized, and the context and methods behind their collection are provided. Variables measured during each test include the soil’s cone index, vertical load, and the wheel’s dimensions, torque, drawbar pull, motion resistance, sinkage, and slip. The process of digitization into the archive and an analysis of data follows. Expansion of the dataset is necessary for development of empirical and evaluation of physics-based vehicle-terrain interface (VTI) models. Current efforts to improve accuracy of models using the DROVE database include calibration of DEM (Discrete Element Method) model parameters and modifications to VTI algorithms.

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