Numerical terramechanics simulation and validation of soil volume in wheel loader bucket

Le résumé fourni par la source

This research, which focuses on validating the simulated soil volume in two distinct wheel loader buckets, relies heavily on field tests to validate the simulation method. The study compared validation iterations to volume data from corresponding field tests performed on a standardized soil pile. The soil particle properties were determined by specific soil characterization tests, which were then meticulously virtually replicated to calibrate the simulation materials accurately. The study compared the simulated and actual soil volumes in the wheel loader buckets using Discrete-Element Method (DEM), Light Detection and Ranging (LiDAR), and real-time simulation. The weight-based method data extracted from the field tests were used as a benchmark for the methodology comparison. The study found that bucket B at speed one (low speed) had a significantly larger capacity than the other bucket and speed combinations, as demonstrated by the results of the weigh-based method. The LiDAR methodology presented excellent volume prediction capacity, with some sectionalization in the results due to the field methodology. The study validated the precision simulation capacity to simulate the volume of soil in the wheel loader buckets by constant simulation results in between the value limits of the benchmark results. The accuracy assessment of the real-time simulation method was agreeably surprising, with results constantly near the precision simulation. The study also describes the methodologies for wheel loader field tests, measurements of physical test material, virtual material calibration using DEM, real-time simulation, statistical comparison between estimation methodologies, and results explanation.

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