基于ANSYS/LS-DYNA的果树剪枝动力学仿真分析

为了更好地研究果树剪枝机理,应用Pro/E软件对剪枝剪进行建模,利用接口将建立的模型导入ANSYS进行网络划分.在ANSYS/LS-DYNA环境下,建立了果树剪技有限元模型,对果树剪枝进行了动力学仿真.通过动力学仿真研究果树剪枝过程中的受力分析表明,当树枝直径为30mm时,刀片组最大应力为218.67 MPa,发生在定刀片刀刃附近.所得结论为改进果树剪枝剪结构、改善其受力状况和工作性能、延长使用寿命提供了依据.

Dynamic Simulation Analysis of Fruiter Trimmer Based on ANSYS/LS-DYNA

In order to study the mechanism of fruiter trimmer,pruning shears were modeled by Pro/E,and the model established was guided into ANSYS for dividing of network,the three dimension model of fruiter trimmer was built for dynanmics simulation in the ANSYS / LS-DYNA environment.Stress analysis in the dynamics simulation of fruit tree ’s pruning process showed that when the tree branch’ diameter was 30 mm,the maximum stress of the blade group was 218.67 MPa in the vicinity of the fixed-blade cutting edge.It provides a basis for the improvement of fruit tree pruning shear’s structure and the status and performance of its force,and also it extends the service life.