Discrete element simulation analysis and experiment of drilling and soil acquisition process

Soil sampling devices for agricultural machinery are becoming increasingly widespread．Soil sampling auger design and soil acquisition scheme are crucial to soil sample collection's efficiency and accuracy．Xixian New Area soil was selected as analysis material, three drilling and soil acquisition schemes according to soil sampling equipment application scenarios were proposed．Furthermore, discrete element simulation models for three drilling schemes were established, effects of different drill diameters, drilling speeds, and drilling angular speeds on soil disturbance rate and compensation depths were analyzed．Soil sampling tests were carried out to determine three drilling scheme loads, providing a reference basis for power components design of soil sampling equipment．