Finite Element Simulation of Frame Structure ofCutting Table on Rape Combine Harvest

摘要

In this paper, the frame structure of cutting table on 4LYZ-2 rape harvest, which wasrefitted from 4LZ-2 combine harvest by adding a vertical cutter, has been investigated using the finiteelement method under inertia loads and transient load to examine the rationality of refit. 3-D solidmodel of the frame structure of cutting table on 4LZ-2combine harvests and that of refitted （4LYZ-2rape harvest ）were built in popular CAD software Solidsworks. Then the models were imported intoANSYS. By inputting the stiffness and density properties as properties of material, selecting element,meshing the model, specifying the boundary condition, the finite element model were obtained. Allthe dynamic analysis and post processing were executed using ANSYS. The natural frequencies andmodal shapes of the structures were available as a result of modal analysis. The response of thestructure under the inertia load and transient load were simulated in harmonic analysis and intransient analysis. The inertia loads caused by drive machines, which motivate the horizontal cutterand vertical cutter respectively, were obtained using ADAMS software (Automatic Dynamic Analysisof Mechanical System). The transient load caused by impact when cutting the stem of the rape wasmeasured by self-designed measure system. According to the result of simulation, optimizationdesign was done, and the result of the optimization is acceptable.