Effects of ultrasonic vibration-assisted cutting on tillage blade performance and soil fragmentation characteristics under different soil moisture contents

IF 6.1 1区农林科学 Q1 SOIL SCIENCE

Soil & Tillage Research Pub Date : 2025-04-08 DOI:10.1016/j.still.2025.106575

Jian Cheng , Kan Zheng , Junfang Xia , Beihai Zhang , Yang Ni , Jun Ma

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引用次数: 0

Abstract

In response to the challenge of high cutting resistance experienced by the blade during tillage operations, this study proposes a resistance reduction method based on ultrasonic vibration-assisted cutting. Five types of soil with different moisture contents were selected as the research objects, and a dynamic model of the blade and soil particles under ultrasonic vibration was constructed. The simulations employed the discrete element method (DEM) coupled with a contact model to calibrate soil models with different moisture contents. The cutting force and cutting energy in both the ultrasonic vibration-assisted cutting (UVAC) and conventional cutting (CC) modes were analyzed. Least significant difference and regression analysis were used to determine the differences between the two modes. Additionally, the force and velocity of soil particles under both cutting modes were examined to quantitatively and intuitively assess the fragmentation between particles. The results demonstrated that the simulation results were largely consistent with the bench experiment results. The simulation analysis effectively captured the trends in cutting force and cutting energy observed in the actual cutting process and revealed the microscopic changes in soil fragmentation. For all five moisture contents, the cutting force in both modes gradually increased with cutting depth, while the cutting force in UVAC mode was significantly reduced. As moisture content increased from 10 % to 30 %, the cutting energy for both modes decreased, with higher moisture content corresponding to lower energy requirements during cutting. Notably, the cutting energy in UVAC mode was reduced by more than 60 % across all moisture contents. Furthermore, UVAC mode enhanced the force and velocity of soil particles, facilitating the fragmentation of interparticle bonds. However, the electrical energy in UVAC mode was consistently higher than that in CC mode. In conclusion, this study demonstrates that using ultrasonic vibration-assisted blade for soil cutting effectively reduces cutting force and cutting energy while enhancing the fragmentation of soil particles. These findings provide a new research direction for the development of resistance reduction equipment in agricultural tillage operations.

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不同土壤含水量下超声振动辅助切割对耕作叶片性能及土壤破碎化特性的影响

针对耕作过程中叶片切割阻力大的挑战，本研究提出了一种基于超声振动辅助切割的减阻方法。选取5种不同含水率的土壤作为研究对象，建立了叶片与土壤颗粒在超声振动作用下的动态模型。模拟采用离散元法（DEM）结合接触模型对不同含水率的土壤模型进行标定。分析了超声振动辅助切削（UVAC）和常规切削（CC）两种切削模式下的切削力和切削能量。采用最小显著差异和回归分析确定两种模式之间的差异。此外，研究了两种切割方式下土壤颗粒的力和速度，定量、直观地评价了颗粒之间的破碎程度。结果表明，模拟结果与台架实验结果基本一致。模拟分析有效地捕捉了实际切削过程中观察到的切削力和切削能的变化趋势，揭示了土壤破碎化的微观变化。对于5种含水率，两种模式下的切削力都随着切削深度的增加而逐渐增加，而UVAC模式下的切削力则显著降低。当含水率从10 %增加到30 %时，两种模式的切割能量都降低了，含水率越高，切割过程中的能量需求越低。值得注意的是，在UVAC模式下，所有水分含量的切割能量都减少了60% %以上。此外，UVAC模式增强了土壤颗粒的力和速度，促进了颗粒间键的断裂。然而，UVAC模式下的电能始终高于CC模式下的电能。综上所述，本研究表明，使用超声振动辅助刀片进行土壤切割，有效降低了切割力和切割能量，同时增强了土壤颗粒的破碎性。这些研究结果为农业耕作作业中减阻设备的研制提供了新的研究方向。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Soil & Tillage Research 农林科学-土壤科学

CiteScore

13.00

自引率

6.20%

发文量

266

审稿时长

5 months

期刊介绍： Soil & Tillage Research examines the physical, chemical and biological changes in the soil caused by tillage and field traffic. Manuscripts will be considered on aspects of soil science, physics, technology, mechanization and applied engineering for a sustainable balance among productivity, environmental quality and profitability. The following are examples of suitable topics within the scope of the journal of Soil and Tillage Research: The agricultural and biosystems engineering associated with tillage (including no-tillage, reduced-tillage and direct drilling), irrigation and drainage, crops and crop rotations, fertilization, rehabilitation of mine spoils and processes used to modify soils. Soil change effects on establishment and yield of crops, growth of plants and roots, structure and erosion of soil, cycling of carbon and nutrients, greenhouse gas emissions, leaching, runoff and other processes that affect environmental quality. Characterization or modeling of tillage and field traffic responses, soil, climate, or topographic effects, soil deformation processes, tillage tools, traction devices, energy requirements, economics, surface and subsurface water quality effects, tillage effects on weed, pest and disease control, and their interactions.