Abstract
In order to find the change characteristics of wheat stem lodging under the rectangle wind load, wheat stem models were set up which include 5 inter-nodes, and then the process of wheat stem lodging were simulated by finite element software ANSYS/LS-DYNA. The simulation results show that the lodging is related to impulse of the rectangle wind load. The smaller the impulse is, the more difficultly the stem lodging happen. Along the entire stem axis, the maximum stress value occurs in the ovalization area, the stress values are smaller in the other area. The study results provide some references for the research on high yield cultivation and lodging resistance of wheat and plant stem processing.
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