Design and parameters optimization of root cutting tool based on garlic numerical simulation model

To obtain the best tool parameters for garlic root cutting to reduce the root cutting force and improve efficiency, a linkage occlusion-cutting mechanism was designed for a garlic root cutting force test. The physical and mechanical properties of garlic meat and garlic skin were measured and calculated by using a universal material testing machine. A plastic follow-up model (MAT-3) in the LS-DYNA material library was used as a simulated garlic material model. A three-dimensional model of the garlic and the tool was established and imported into ANSYS/LS-DYNA to establish a garlic root cutting simulation model. The model was used for numerical calculation and analysis. The simulation parameters were optimized according to the actual cutting force change curve, and a reliable simulation model was obtained. The error between simulated result and actual measurement was 3.5%. Based on this reliable model, the effects of tool parameters on the root cutting force were explored. The optimal blade edge angle was 11 degrees, the optimal blade back angle was 13 degrees, and the cutting root force was reduced by 14.94%. The reliable model and optimal tool parameters provide a reference for the design and development of garlic root cutting equipment. Practical Applications Garlic is popular worldwide because of its high nutritional value and unique flavor. A reliable numerical simulation model for garlic will encourage researchers to design garlic-processing equipment. The optimal tool parameters also provide a reference for garlic root cutting equipment.