钵体苗与导苗管碰撞的有限元模拟分析

Finite Element Simulation Analysis on the Rise Seedling and the Seedling Guide Tube Collision

运用ANSYS/LS-DYNA软件,对水稻气力有序抛秧过程中钵体苗与导苗管碰撞机理进行了有限元模拟分析,通过对钵体苗的应力分析,得出了相应的应力时间关系曲线。通过设置不同的碰撞速度和不同的碰撞位置,得出碰撞过程中钵体苗内部的应力分布,并对应力时间关系曲线进行分析,发现所得的结果与碰撞理论基本相符,为水稻气力有序抛秧机的设计提供了一定的理论基础。

In the process of element simulation analysis throwing rice pneumatic orderly, this essay uses ANSYS/LS - DYNA software to give a finite on the rise seedling and a seedling on the rise seedling, a corresponding stress time curves is got, got the internal stress distribution the result was in accordance with guide tube collision mechanism. After the stress analysis o By setting different speed and locations of collision, we during the collision process. Then we analyzed the stress - time curve and found that Collision theory. This finding provides a theoretical foundation for the designing of the pneumatic orderly rice -throwing machine.