Investigation of the predictability of mouldboard plough draught from soil mechanical strength (cone index vs. shear strength) using finite element modelling

IF 2.4 3区 工程技术 Q3 ENGINEERING, ENVIRONMENTAL Journal of Terramechanics Pub Date : 2023-01-01 DOI:10.1016/j.jterra.2023.04.001
Mojtaba Naderi-Boldaji , Seyed Hossein Karparvarfard , Hadi Azimi-Nejadian
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利用有限元模型研究土壤机械强度(锥体指数与剪切强度)对模板犁吃水的可预测性
使用土壤变量的耕作机具吃水预测模型是农业机械管理中的重要工具,这些土壤变量可以很容易地在现场测量。在我们之前的研究中,使用有限元(FEM)模型建立了圆柱形模板犁吃水深度与土壤含水量、容重、犁深和速度的回归模型。本研究旨在研究土壤物理性质是否可以用土壤强度变量代替,包括分别用圆锥贯入仪和剪切叶片测量的圆锥指数(CI)或剪切强度(SS)。采用有限元法模拟了土壤中的圆锥贯入试验和剪切叶片试验,并从模板-犁土相互作用模型中获得了模板-犁吃水深度。对0.3米的犁耕层进行了均质或非均质模拟。CI和SS在耕作层上的平均值被用作土壤强度变量。获得了作为SS、犁耕深度和速度的函数的模板吃水的最佳模型,R2=0.87,RMSE=0.79kN。用文献中报道的一组实验数据验证该模型表明,预测的吃水力在测量值的±18%范围内,R2=0.84。该模型可与剪切叶片或组合叶片圆锥仪一起用于预测犁板犁的吃水深度。
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来源期刊
Journal of Terramechanics
Journal of Terramechanics 工程技术-工程:环境
CiteScore
5.90
自引率
8.30%
发文量
33
审稿时长
15.3 weeks
期刊介绍: The Journal of Terramechanics is primarily devoted to scientific articles concerned with research, design, and equipment utilization in the field of terramechanics. The Journal of Terramechanics is the leading international journal serving the multidisciplinary global off-road vehicle and soil working machinery industries, and related user community, governmental agencies and universities. The Journal of Terramechanics provides a forum for those involved in research, development, design, innovation, testing, application and utilization of off-road vehicles and soil working machinery, and their sub-systems and components. The Journal presents a cross-section of technical papers, reviews, comments and discussions, and serves as a medium for recording recent progress in the field.
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