往复式割刀切割马铃薯秧数值模拟分析  

Numerical Simulation of Reciprocating Cutter

作　　者：辛青青 郭子蒙 吕钊钦[1] 穆桂脂[1] 闫兴伟 Xin Qingqing;Guo Zimeng;Lv Zhaoqin;Mu Guizhi;Yan Xingwei(College of Mechanical and Electrical Engineering,Shandong Agricultural University,Tai’an 271018,China)

机构地区：[1]山东农业大学机械与电子工程学院,山东泰安271018

出　　处：《农机化研究》2021年第1期19-22,共4页Journal of Agricultural Mechanization Research

基　　金：山东省农机装备研发创新计划项目(2018YF020-07);山东省现代农业产业技术体系薯类创新团队农业机械岗位专家项目(SDAIT-16-10)。

摘　　要：针对马铃薯收秧机械在国内发展空白和往复式切割器切割马铃薯秧蔓研究较少的问题,对往复式切割器进行三维建模、显式动力学分析,并仿真得到往复式切割器在切割马铃薯秧过程中的变形结果、应力和剪切力变化折线图。结果表明:马铃薯秧的最大变形为148.98mm,最大应力为2.7706MPa,最大剪切力为1.5368 MPa,且往复式切割刀的各项指标均在合理范围之内,能够充分实现马铃薯秧苗的切割。该研究内容可为往复式切割器在马铃薯秧蔓切割问题上的探讨提供参考。Aiming at the blank of potato seedling harvesting machinery in China and the lack of research on potato seedling cutting by reciprocating cutter,the 3d modeling of reciprocating cutter and explicit dynamic analysis are presented in this paper.The results of deformation stress and shear force changes in the process of cutting potato seedlings by reciprocating cutter were obtained by simulation.The results showed that the maximum deformation,maximum stress and maximum shear force of potato seedlings were 148.98mm,2.7706MPa and 1.5368MPa,and the indexes of reciprocating cutting knife were all within the reasonable range.The research content provides reference for the discussion of reciprocating cutter in potato seedling cutting.

关 键 词：马铃薯收秧机械 往复式切割器 显式动力学 数值模拟 

分 类 号：S225.7[农业科学—农业机械化工程]