Justification of the soil dem-model parameters for predicting the plow body resistance forces during plowing

IF 2.4 3区 工程技术 Q3 ENGINEERING, ENVIRONMENTAL
Salavat Mudarisov , Yakov Lobachevsky , Ildar Farkhutdinov , Eduard Khasanov , Ildar Rakhimov
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引用次数: 0

Abstract

The discrete element method has recently become a popular tool for developing soil models to be used for modelling the tillage process, which involves using working tools. The research aims to evaluate the parameters of the contact model particles when modelling tillage with large–sized working tools using the discrete element method. The paper presents the results of calibration of the physico-mechanical parameters of the particles of the soil environment model described using the discrete element method. The model is used for modelling the tillage process using moldboard plow. The parameters of the simulated particles to be studied are the Poisson's ratio, coefficients of static and dynamic friction of particles, Young's modulus, surface energy, particles' diameter, coefficients of static and dynamic metal friction of particles. Calibration was carried out according to the horizontal, vertical and transverse components of the traction resistance of the plow body. The obtained dependences of the components of the plow body traction resistance on soil moisture and surface energy help select parameters for the Hertz-Mindlin contact model while modelling the behavior of the soil environment when interacting with the working tools of tillage and sowing machines.

土壤dem模型参数预测犁体阻力的合理性
离散元法最近成为一种流行的工具,用于开发用于模拟耕作过程的土壤模型,这涉及到使用工作工具。研究目的是利用离散元法对大型工具耕作建模时接触模型颗粒的参数进行评估。本文介绍了用离散元法对土壤环境模型中粒子的物理力学参数进行标定的结果。该模型用于对犁式耕作过程进行建模。所要研究的模拟颗粒的参数为泊松比、颗粒的静摩擦和动摩擦系数、杨氏模量、表面能、颗粒直径、颗粒的静摩擦和动金属摩擦系数。根据犁体牵引阻力的水平、垂直和横向分量进行标定。所获得的犁体牵引阻力各组成部分对土壤水分和表面能的依赖关系有助于选择Hertz-Mindlin接触模型的参数,同时对土壤环境与耕作和播种机械工作工具相互作用时的行为进行建模。
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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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