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Simulation study on tractive performance of off-road tire based on discrete element method.
Lin Xuan Zhou1, Jing Wei Gao1, Qiao Li1
1College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410072, China.
Mathematical Biosciences and Engineering : MBE
|September 29, 2020
Summary
This study enhances vehicle tractive performance simulations on sandy soil using discrete element method (DEM) models. The developed method improves prediction accuracy for off-road vehicle testing and simulation.
Area of Science:
- Engineering
- Soil Mechanics
- Vehicle Dynamics
Background:
- Existing simulation methods for vehicle tractive performance on sandy soil lack accuracy.
- Off-road vehicle testing requires reliable simulation tools for performance prediction.
Purpose of the Study:
- To improve the applicability and prediction accuracy of vehicle tractive performance simulations on sandy soil.
- To establish an off-road tire model using the discrete element method (DEM) for various operating conditions.
Main Methods:
- Developed an off-road tire model using discrete element method (DEM).
- Calibrated DEM model contact parameters using rubber-sand friction and soil bin tests.
- Simulated tire-sand interaction under straight and inclining driving conditions.
Main Results:
- Obtained variation laws for drawbar pull, torque, tractive efficiency, and sinkage.
- Validated the discrete element method (DEM) for simulating vehicle tractive performance.
- Established a systematic parameter calibration method for DEM simulations.
Conclusions:
- Discrete element method (DEM) simulation is feasible for studying vehicle tractive performance on sandy soil.
- The systematic parameter calibration method enhances DEM simulation accuracy.
- This research enriches vehicle testing methodologies for off-road conditions.
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