4U-1600ZC型马铃薯联合收获机机架的有限元分析及优化

Finite Element Analysis of the Frame of 4U-1600ZC Potato Combine Harvester

机架是马铃薯收获机的主要承载部件,机架设计是否合理直接影响着马铃薯收获机的安全性、可靠性。以4U-1600ZC型马铃薯联合收获机机架为研究对象,基于Solidworks软件对机架进行三维模型构建,通过Ansys Workbench软件对机架进行有限元分析和模态分析,得出:满载工作下机架产生的最大应力为193 MPa,最大变形量为3.75 mm,通过模态分析得出机架的前6阶固有频率为11.669~24.518 Hz,固有频率远小于工作时的激振频率,作业时不会发生共振现象。通过对机架应力富裕部分进行轻量化设计,优化后的机架在满足工况使用条件的同时机架质量减轻了22.8%,实现轻量化目标。可为马铃薯收获机结构优化提供参考。

The rack is the main load-bearing component of potato harvester,whether the rack design is reasonable or not directly affects the safety and reliability of potato harvester.This paper takes the 4U-1600ZC potato combine harvester frame as the research object,constructs the three-dimensional model of the frame based on Solidworks software,and carries out finite element analysis and modal analysis of the frame through Ansys Workbench software.The maximum stress generated by the rack under full load is 193 MPa,and the maximum deformation is 3.75 mm,and the first 6 orders of the rack's intrinsic frequency is 11.669~24.518 Hz through modal analysis,which is much smaller than the work excitation frequency,and no resonance phenomenon occurs during operation.Through the lightweight design of the stress-rich part of the frame,the optimized frame reduces the mass of the frame by 22.8% while meeting the working conditions,thus realizing the goal of lightweight.The study can provide a reference for the structural optimization of potato harvester.