Research On Deep Plowing For Compacted Soil Based On SPH

Farming is the symbol of agriculture and civilization, but also the most energy-intensive field work. The continuous improvement of farming equipment and key components in order to facilitate intensive and save energy consumption, has always been the farmers and the industry's goal. However, the foothills of mountains in southern China are currently subject to the original soil conditions, poor environment of soil tillage, labor intensity, which affects the agricultural development in mountainous hills. Therefore, researching and developing operating machine with characteristics of small ground-penetrating torque, large plow depth and stabilized operation is urgent.In order to reduce the working power of tillage implement, made a combination of counter-rotating chisel-cut and deep plowing applied on small agricultural machine is proposed. For the compaction of soil, this paper focused on the finite element method analysis of the practical requirements for a positive spin rotary blade, the study mainly includes the following sections:1,Combination of mechanical soil dynamics and soil tillage mechanical theory of knowledge, and practical needs are rotating rotary blade design and analysis the process of rotating rotary movement.2,The MAT147 with LS-DYNA material models, the establishment of the Southern hills of soil material model parameters and soil high-speed cutting numerical finite element simulation model. Using ANSYS11.0/LS-DYNA software, using SPH method is rotating rotary blade cutting process on the soil of three-dimensional numerical simulation.3,SPH method by rotating rotary soil processes are being carried out three-dimensional numerical simulation to arrive at different parameters of the force of rotary cutting tools and data, combined with anti-rotation chisel-cut simulation data, analysis and matching tools, and design the corresponding phase angle.SPH method is applied to the three-dimensional numerical simulation for rotary soil process of rotating, and thus draws the force characteristics of rotary cutting tools under the different parameters. Combining with the simulation data of counter-rotating cutting chisel, the work of tool matching is done and relevant phase angle is designed. So it can make the force of Anti-screwdrivers rotary blade cutter and positive spin offset respectively. Accordingly, the small agricultural machinery can reduce energy consumption and improve efficiency. Based on these methods, we develop the small farming machinery which is fit for farming in compacted soil. The data and analysis program based on the study are of great significance for the small farming machinery.