Soil and Crop Modeling for Machine Design and Virtual Analysis
2024 Digital Twin of Crop Harvesting Systems Using ALTAIR CFD-DEM
Digital Twin of Crop Harvesting System using Altair EDEM
2024 Integrating DEM and Scaling Law Modeling Techniques for Simulation of Earth-Moving Applications (Mehari Tekeste, Mohamed Abdeldayem)| Machine-Ground Interaction Consortium | University of Wisconsin-Madison
Abstract: With the increasing need for design of energy-efficient Ground Engaging Tools (GETs) and automated earth-moving processes, modeling soil-to-bulldozer interaction is important. A soil bin testing base scaling laws of geometrically scaled blade to soil and DEM simulation to predict soil reaction forces and soil mass was. A randomized complete block design with five replications was conducted in a soil bin using five geometrically scaled blades (λ = 1/8, λ = 1/9, λ = 1/11, λ = 1/13, and λ = 1/15, with λ = 1 refers to a bulldozer blade of the Caterpillar D3k2XL). Blade soil cutting forces were measured as the scaled blade traversed on cohesive-frictional artificial soil bin. The soil mass and soil pile dimensions were measured above the undisturbed soil at full blade load. DEM simulation of the blade-to-soil was performed after calibrating the cohesive-frictional soil using elasto-plastic with cohesion DEM soil model. A scaling law model was established between soil horizontal forces and the five geometric blade scale ratios with a high coefficient of determination (R2 = 0.9898). A scaling law (R2 = 0.9951) was also established between the five geometry scales and soil mass. Validation of the calibrated DEM soil model resulted in good prediction of soil reaction forces straight blade and curved blade RMSE of 14.89 N and 7.42 N, respectively. Integrating DEM and mathematical scaling law modeling techniques are expected to enhance accelerated design of GETs, and develop algorithms automation of earth-moving processes.
https://www.sciencedirect.com/science/article/abs/pii/S0022489824000430
https://sbel.wisc.edu/outreach/magic/magic-2024/
2023 Journal of Terramechanics| Special Issue [Soil Modeling and Simulation for Terramechanics Applications of Manned and Unmanned Autonomous Vehicles]
https://www.youtube.com/watch?v=kCzKfYcpRrw
2022 Soil Modeling for Virtual Design and Performance Analysis of Mobility Systems for Off-Road Industry
2021 International Society of Terrain Vehicle Systems (ISTVS) Terramechanics Bite [Soil Machine Dynamics Research at Iowa State University]
https://www.youtube.com/watch?v=72eGETOrWuE