电动蔗叶切段还田机输送机构仿真分析

Simulation Analysis of Conveyor Mechanism for Electric Sugarcane Leaf Returning Machine

为探究蔗叶还田机输送机构两侧蔗叶输送效率低的原因,利用LS-DYNA软件建立了刷辊输送蔗叶的有限元模型,得到了蔗叶的应力场变化和运动姿态,并对蔗叶的折角变化、位移情况以及质量分布进行了详细分析。仿真结果表明:输送过程中两侧蔗叶被折弯成接近直角,蔗叶质量分布规律为两侧多、中间少。用高速摄影试验对建模与模拟进行了验证,结果表明:模拟与试验吻合性较好,蔗叶折弯角度最大值相对误差小于3.60%,曲线相关系数为0.950,蔗叶变形情况、质量分布情况与仿真分析结果一致。

In order to study the reasons for low conveying efficiency of sugarcane leaves on both sides of the conveying mechanism of sugarcane leaf returning machine,the finite element model of sugarcane leaves conveying by brush roller was established in LS-DYNA software.The Von Mises stress and motion state of sugarcane leaves were obtained.The variation of bending angle,displacement and mass distribution of sugarcane leaves were analyzed in detail.The simulation results showed that the sugarcane leaves on both sides are bent to be close to right angles during the conveying process and the uneven distribution of sugarcane leaves is characterized by less in the middle and more on both sides.The model and simulation were verified by the high-speed photography experiment.The research showed that the simulation is in good agreement with the experiment,the relative error of the maximum bending angle of sugarcane leaves is less than 3.60%and the curve correlation coefficient is 0.950.The deformation and mass distribution of sugarcane leaves are similar to the simulation results.