基于有限元沙柳切割过程数值模拟和工作参数优化

针对圆盘式灌木平茬机作业时岔口质量差、刀具磨损严重的问题,提出了利用ABAQUS软件对沙柳平茬过程进行动态模拟仿真优化工作参数的方法;构建了沙柳三维切削模型,得到了切削过程中沙柳及圆盘锯片的应力变化情况,分析了应力变化的原因。通过双因素实验法,确定了切削参数中进给速度对切削力的影响最大,得出了圆盘锯片的最佳切削参数组合为切削速度60m/s、进给速度350mm/s。田间试验表明:9GZ-1.0型自走式灌木平茬机在切削速度为60m/s、进给速度350mm/s时,每10min切削量为153.2kg,漏割率为0.08,切割效果最好,与模拟切削得到的结果基本相符。

Numerical Simulation and Working Parameters Optimization of Salix Cutting Process Based on FEA

When the disc bush stumping machine is operating, the fork’ s quality is poor and tool wears seriously. It is proposed using of ABAQUS software simulates the Salix stumping dynamic process and optimizates work parameters. Build the Salix three-dimensional cutting model;Get the stress disc blade changes when cutting process Salix;Analyzes the reasons of the stress change;The feed speed affect the cutting force more heavily than cutting speed and the optimum combination disc blade cutting parameters are cutting speed 60m/s and feed speed 350mm/s. Finally, field tests verified the 9 GZ-1 . 0-type self-propelled bush stumping machine at cutting speed of 60 m/s, feed speed 350 mm/s, cut the amount of 153. 2kg every ten minutes. The leakage rate ois0. 08 cutting, same with the cutting simulation results.