Analysis of the mechanical transfer characterization between lodged sugarcane and the cutter by simulation modeling with UMAT subroutine  

作　　者：Tao Liu Qingqing Wang Jiaxun He Dongbo Xie Zhipeng Liu Lichao Liu Liqing Chen 

机构地区：[1]College of Engineering,Anhui Agricultural University,Hefei 230036,China [2]Anhui Intelligent Agricultural Machinery Equipment Engineering Laboratory,Hefei 230036,China [3]Anhui Science and Technology University,Chuzhou 233100,Anhui,China

出　　处：《International Journal of Agricultural and Biological Engineering》2024年第3期39-49,F0002,共12页国际农业与生物工程学报（英文）

基　　金：financially supported by the Anhui Province Agricultural Machinery and Equipment Application Industry Technology System Project,the School-Level Cross-Disciplinary Project(Grant No.XK-XJJC002);the Project of Talent Introduction of Anhui Science and Technology University:Research on Dynamic Characteristics of Double Disc Cutter and Analysis of Stalk Breaking Mechanisms(Grant No.JXYJ202201).

摘　　要：Cutting the roots of sugarcane using cutters is a critical part of sugarcane harvesting,and the degree of breakage of the roots after cutting affects the germination and growth of sugarcane to a certain extent in the following year.However,the intricate interactions between the cutter and the stalk remain unclear.In order to fill this gap,this study first analyzed the conditions for no missed cuts during the operation of a double-disk cutter.Secondly,the research established a model of sugarcane stalk with anisotropy using the User-defined Material Mechanical Behavior(UMAT)subroutine based on the secondary development module of ABAQUS/Explicit.The cutting force curves obtained from simulation and test show a high correlation coefficient(R^(2)=0.9621),indicating the reliability of the model of sugarcane stalk in mechanical transfer.Subsequently,the simulation test of the blade rotating cutting characteristics in this study indicates that at a blade tilt angle of 11.3°,a blade rotating speed of 659.3 r/min,and a forward speed of 1.5 km/h,the maximum shear force on the blade is the largest,while the maximum cutting force is the smallest.Finally,based on the simulation results,this paper discussed the internal factors affecting the breakage rate of sugarcane stalks and predicted the damage location and damage force of the stalks by studying the stress wave transmission effect.Additionally,it analyzed the effects of single-knife cutting and multi-cutting on stalk incisions.The results indicated that multi-cutting causes more damage to the stalks and increases the breakage rate of sugarcane.The results of this study can provide a theoretical basis and technical reference for exploring the reduction of sugarcane residual cutting rate.

关 键 词：sugarcane harvesting UMAT mechanical transfer characterization CUTTER simulation modeling 

分 类 号：S225.5[农业科学—农业机械化工程]