Research on Simulation Analysis of Soil Cutting Process by Ditcher

Ditching and fertilizing is the important components of the orchard working. In order to achieve modern agricultural requirements for energy saving and drag reduction, the mechanism of ditching blade on soil during soil cutting process was studied, and the tool structure and parameters were optimized. This paper numerically simulated the soil cutting process of disc type ditcher blade based on SPH method by ANSYS/LS-DYNA. Simulation result showed that the SPH method can directly simulate the whole process of cutting the soil with the ditch cutter. The maximum Von Mises stress and cutting force are 4 MPa and 350N. The Von Mises stress of soil and cutting force had small fluctuation, so that the cutting is stable. The power consumption was approximately 0.35 kW at steady state, and the cutting consumption obtained by theoretical analysis is similar to the simulation result. By theoretical analysis, the viability of SPH method on simulating the soil cutting process of disc type ditcher blade was verified.