基于有限元法的深耕机旋耕刀辊切削土壤仿真  

Simulation of Deep Tiller Rotary Blade Cutting Soil Based on Finite Element Method

作　　者：余大霜 杨永发[1] 袁成彪 任方旭 赵国钦 YU Da-shuang;YANG Yong-fa;YUAN Cheng-biao;REN Fang-xu;ZHAO Guo-qin(School of Machinery and Transportation,Southwest Forestry University,Kunming Yunnan 650244,China)

机构地区：[1]西南林业大学机械与交通学院,云南昆明650224

出　　处：《林业机械与木工设备》2024年第7期25-29,共5页Forestry Machinery & Woodworking Equipment

摘　　要：针对于土壤重耕、漏耕和缠草等问题,设计了一种创新的深耕机旋耕刀辊,并利用有限元方法和LS-DYNA显示动力学分析程序进行仿真分析。通过仿真模拟,得到了切削土壤时的等效应力分布情况。结果表明浅层土壤受到的扰动位移最大,中层土壤次之,深层土壤的扰动位移最小。模拟情况与实际的种植情况相吻合。设计的深耕机旋耕刀辊在切削土壤时能够发挥最大的作用,达到了切土、松土和抛土的设计目标。这将改善土壤质量,满足作物种植的需求。此外,设计的旋耕刀部件还为深耕机的耕种部件提供了新的思路和方法,有效解决了切土时的重耕和漏耕问题。Soil leakage and heavy tillage and straw wrapping,an innovative rotary knife roller for deep tillage machine was designed.The equivalent stress distribution of cutting soil is obtained by simulation.It is found that the disturbance displacement of shallow soil is the biggest,next is middle soil and deep soil.The simulation results are consistent with the actual planting conditions.The rotary tiller roller designed for deep tiller can play the greatest role in cutting soil,reaching the design goal of cutting,loosening and throwing soil.This will improve soil quality to meet the needs of crop cultivation.In addition,the designed rotary tiller also provides a new idea and method for the tillage parts of deep tiller,and effectively solves the problem of heavy tillage and leakage tillage.

关 键 词：深耕机 旋耕刀 刀辊 有限元 

分 类 号：S22[农业科学—农业机械化工程]