Effect of Biomimetic Surface Geometry, Soil Texture, and Soil Moisture Content on the Drag Force of Soil-Touching Parts

Soil adhesion is a major problem for agricultural machinery, especially in sticky soils within the plastic range. One promising and practical way to minimize soil–tool modify surface geometry one inspired by soil-burrowing animals. In this study, 27 domed discs were fabricated according an L27 (33) Taguchi orthogonal array tested determine optimal dimensions of surfaces reduce drag force. The optimized disc was soil bin under different conditions (soil texture: silty loam sandy clay loam; moisture content: 23%, 30%, 37%). All trials included flat (without dome pattern) as control. generate lowest possible force present experimental explored based on signal-to-noise ratio analysis. levels control parameters found at coverage 60%, height 5 mm, base diameter 20 mm. Statistics revealed that height-to-diameter are crucial factors influence surfaces. contrast, had limited all treatments, less than (by about 9% 25%, conditions). Accordingly, it can be concluded adequately designed could significantly compared their counterparts.