Construction and Damage Analysis of a Three‐Factor Collision Model for Potato‐Soil‐Pole

ABSTRACT The impact damage of potato during harvest will seriously reduce the quality of potato, which is the key problem to reduce its post‐harvest storage quality. In this study, the potato‐soil‐pole three‐factor collision model was constructed with the potato‐soil ratio, impact velocity and impact object as the core factors, and a new coupled pole was designed to alleviate the impact damage. The potato‐soil finite element model was constructed by reverse engineering, and the deviation of the traditional simplified model was corrected to improve the reliability of the analysis. Taking contact stress and quality damage as evaluation indexes, it was found that the above three factors were negatively correlated with potato quality damage by apparent kinetic analysis. The field experiment showed that the designed new coupled pole met the design requirements, which could effectively reduce the impact damage and ensure the post‐harvest quality of potatoes.