Journal of Terramechanics最新文献_第5页

Plowing drag-adaptive operation control method based on motor temperature compensation for electric tractor 基于电动拖拉机电机温度补偿的耕作阻力自适应运行控制方法

IF 2.4 3区工程技术

Journal of Terramechanics Pub Date : 2024-01-18 DOI: 10.1016/j.jterra.2024.01.002

Qi Wang , Xudong Wang , Wei Wang , Yongjie Cui , Yuling Song

{"title":"Plowing drag-adaptive operation control method based on motor temperature compensation for electric tractor","authors":"Qi Wang , Xudong Wang , Wei Wang , Yongjie Cui , Yuling Song","doi":"10.1016/j.jterra.2024.01.002","DOIUrl":"https://doi.org/10.1016/j.jterra.2024.01.002","url":null,"abstract":"<div><p>Traditional plowing efficiency control methods are difficult to balance the tillage efficiency and uniform plowing depth, and the impact of the motor temperature rise on the control accuracy cannot be ignored during electric tractor operations. Therefore, a plowing drag-adaptive operation control method considering the motor temperature rise was proposed for an electric tractor equipped with a sliding battery pack. Firstly, a field-oriented control model with temperature compensation for the PMSM was developed based on the obtained winding resistances and flux links at different temperatures. Then, the driving torque and battery displacement were regulated to adapt the drag variation by the fuzzy neural network algorithm, allowing joint control of the speed and slip rate, and the simulation analysis was performed. Finally, a field plowing test was conducted. The results showed that the traction efficiency is increased by 23.33 % compared with those without control, and when the motor temperature rises, it can be compensated for temperature to output the required torque accurately, and the average relative errors in both speed and slip rate are reduced. The proposed method can improve the slip and greatly enhance the plowing operational stability, which provided technical support for the automatic precision operation of electric tractors.</p></div>","PeriodicalId":50023,"journal":{"name":"Journal of Terramechanics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139487662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Co-simulation for optimal working parameter selection during soil vibratory compaction process 土壤振动压实过程中优化工作参数选择的协同模拟

IF 2.4 3区工程技术

Journal of Terramechanics Pub Date : 2024-01-12 DOI: 10.1016/j.jterra.2023.12.002

Jianjun Shen, Zheng Tang, Feng Jia, Zhen Liu, Jingru Hou

引用次数: 0

Study of passive steering mechanism for small Mars surface exploration rovers 小型火星表面探测车被动转向机制研究

IF 2.4 3区工程技术

Journal of Terramechanics Pub Date : 2023-12-19 DOI: 10.1016/j.jterra.2023.12.001

Asahi Oe, Shin-Ichiro Nishida, Shintaro Nakatani

引用次数: 0

Effects of vertical load and inflation pressure on tire-soil interaction on artificial soil 垂直荷载和充气压力对人工土壤上轮胎与土壤相互作用的影响

IF 2.4 3区工程技术

Journal of Terramechanics Pub Date : 2023-12-15 DOI: 10.1016/j.jterra.2023.11.002

Nisreen Alkhalifa , Mehari Z. Tekeste , Pius Jjagwe , Thomas R. Way

{"title":"Effects of vertical load and inflation pressure on tire-soil interaction on artificial soil","authors":"Nisreen Alkhalifa , Mehari Z. Tekeste , Pius Jjagwe , Thomas R. Way","doi":"10.1016/j.jterra.2023.11.002","DOIUrl":"10.1016/j.jterra.2023.11.002","url":null,"abstract":"<div><p><span>Instrumented single tire soil bin testing was conducted on a rigid surface and artificial soil by vertically loading a radial tire (LT235/75R15) to two tire vertical loads (6 kN and 8 kN) inflated to three levels of tire inflation pressure (179, 241, and 283 kPa). Lowering the tire inflation pressure by 37 % resulted in 26 % (6 kN vertical load) and 39 % (8 kN vertical load) greater contact lengths (P < 0.05). The 2-D contact area on artificial soil (initial bulk density of 1.51 Mg/m</span><sup>3</sup><span>) was significantly affected (P < 0.05) by tire inflation pressure for each load case. Increasing the load significantly affected the tire’s contact length on soil (P = 0.0010); however, tire inflation pressure did not significantly affect the contact length on soil (P = 0.0609). Soil rut depth and tire-soil deformed volume were not significantly affected by vertical load and tire inflation pressure. Measured tire contact area on soil surface was 3.3 times the contact area on the rigid surface, suggesting tire-soil interaction interface properties on deformable soil are better than using the gross flat plate for evaluating low ground pressure tire technology effects on traction and reducing soil compaction.</span></p></div>","PeriodicalId":50023,"journal":{"name":"Journal of Terramechanics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138688402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The running gear construction impact on overcoming obstacles by light high-mobility tracked UGV 行走装置结构对轻型高机动性履带式无人潜航器克服障碍的影响

IF 2.4 3区工程技术

Journal of Terramechanics Pub Date : 2023-12-11 DOI: 10.1016/j.jterra.2023.11.003

Daniela Szpaczyńska, Marian Łopatka, Piotr Krogul

{"title":"The running gear construction impact on overcoming obstacles by light high-mobility tracked UGV","authors":"Daniela Szpaczyńska, Marian Łopatka, Piotr Krogul","doi":"10.1016/j.jterra.2023.11.003","DOIUrl":"https://doi.org/10.1016/j.jterra.2023.11.003","url":null,"abstract":"<div><p>Rubber tracked running gears are widely used in high-mobility Unmanned Ground Vehicles (UGV) to increase obstacle negotiation possibility in urban and rural terrain. The paper proposes a method of assessing the mobility level of the light UGV‘s tracked running gears in terms of their ability to overcome terrain obstacles. A model of rubber track system was created in the MSC ADAMS environment. A track-ground contact was also modeled, defining the traction force based on the Wong equations. For four different chassis models (rigid construction, bogies solution – rigid and elastically mounted to the frame and rocker-bogie construction), with two track tension variants, the ability to overcome five terrain obstacles was checked, taking into account three different types of soil. The solutions were accessed on the basis of parameters of general efficiency of overcoming obstacles, driving force and slip values, as well as the distribution of track pressures on the ground. The best solutions for each criterion were indicated. The simulation results showed an improvement in the driving properties with the use of elastically suspended elements. The results also emphasized the negative impact of increased track tension on overcoming obstacles and the impact of ground characteristics on the slip values of the running gear.</p></div>","PeriodicalId":50023,"journal":{"name":"Journal of Terramechanics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138564319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machine learning approach for predicting soil penetration resistance under different moisture conditions 不同湿度条件下土壤渗透阻力预测的机器学习方法

IF 2.4 3区工程技术

Journal of Terramechanics Pub Date : 2023-12-01 DOI: 10.1016/j.jterra.2023.08.002

Anis Elaoud , Hanen Ben Hassen , Rim Jalel , Nahla Ben Salah , Afif Masmoudi , Atef Masmoudi

引用次数: 0

Design and implementation of a novel apparatus for terramechanics studies of helical scrolls 一种用于螺旋涡旋地力学研究的新型仪器的设计与实现

IF 2.4 3区工程技术

Journal of Terramechanics Pub Date : 2023-11-20 DOI: 10.1016/j.jterra.2023.11.001

Manmeet Brar, Jorge Villacrés, Shayan Meschian, Martin Barczyk, Michael Lipsett

{"title":"Design and implementation of a novel apparatus for terramechanics studies of helical scrolls","authors":"Manmeet Brar, Jorge Villacrés, Shayan Meschian, Martin Barczyk, Michael Lipsett","doi":"10.1016/j.jterra.2023.11.001","DOIUrl":"https://doi.org/10.1016/j.jterra.2023.11.001","url":null,"abstract":"<div><p>Modeling the force interaction between a wheel and the ground is necessary when evaluating the effectiveness of a vehicle’s mobility on challenging terrain. Soft soils with low bearing strength are a particularly difficult medium for wheeled vehicles. Helical scrolls have shown promise as an alternative to wheels which can work across a range of terrains, warranting a detailed terramechanics study to model their capabilities. Most of the existing terramechanics literature is limited to wheels and often employs an apparatus to study single wheels in a fixed geometry.</p><p>This paper describes the design and implementation of a novel apparatus capable of housing a range of scroll geometries and configurations. The apparatus is comprised of a soil container, carriage to drive the scroll in two operating configurations, and a surrounding frame that enables both vertical and horizontal motions of the carriage. The carriage is outfitted with a drive system and instrumentation to measure the sinkage, stress, and drawbar pull values required for a terramechanics characterization. Initial stress-sinkage curves for three different scroll configurations align with expected results and provide a proof of concept that the proposed apparatus can successfully measure differing geometric parameters and can be used for further terramechanics characterizations.</p></div>","PeriodicalId":50023,"journal":{"name":"Journal of Terramechanics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0022489823000885/pdfft?md5=933ea986684083e2a2ff4cc5142422bc&pid=1-s2.0-S0022489823000885-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138355310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A review of soil modeling for numerical simulations of soil-tire/agricultural tools interaction 土壤-轮胎/农具相互作用数值模拟研究进展

IF 2.4 3区工程技术

Journal of Terramechanics Pub Date : 2023-10-13 DOI: 10.1016/j.jterra.2023.09.003

Dhruvin Jasoliya , Alexandrina Untaroiu , Costin Untaroiu

{"title":"A review of soil modeling for numerical simulations of soil-tire/agricultural tools interaction","authors":"Dhruvin Jasoliya , Alexandrina Untaroiu , Costin Untaroiu","doi":"10.1016/j.jterra.2023.09.003","DOIUrl":"https://doi.org/10.1016/j.jterra.2023.09.003","url":null,"abstract":"<div><p>The study of deformable soils is one of the key factors in determining the tire, vehicle and/or agricultural tool design parameters. This literature review provides a brief overview of soil classification, soil testing, soil constitutive models, and numerical approaches utilized to model soil-tire/tool interaction. In the past, empirical, semi-empirical, and analytical soil models were used in these studies. However, some limitations occurred in terms of characterization of soil-tire/tool interaction in detail due to a large number of variables such as cohesion, moisture content, etc. In the last few decades, the finite element (FE) method was used with different formulations such as Lagrangian, Eulerian, and Arbitrary Lagrangian Eulerian to simulate the soil-tire/tool interaction. Recently, particle-based methods based on continuum mechanics and discrete mechanics started to be employed and showed good capability in terms of modeling of soil deformation and separation. Overall, this literature review provides simulation researchers insights into soil interaction modeling with tires and agricultural tools.</p></div>","PeriodicalId":50023,"journal":{"name":"Journal of Terramechanics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49876190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Discrete element contact model and parameter calibration for clayey soil particles in the Southwest hill and mountain region 西南丘陵山区粘性土颗粒离散元接触模型及参数定标

IF 2.4 3区工程技术

Journal of Terramechanics Pub Date : 2023-10-13 DOI: 10.1016/j.jterra.2023.10.002

Le Yang , Junwei Li , Qinghui Lai , Liangliang Zhao , Jianjian Li , Ronghao Zeng , Zhihong Zhang

{"title":"Discrete element contact model and parameter calibration for clayey soil particles in the Southwest hill and mountain region","authors":"Le Yang , Junwei Li , Qinghui Lai , Liangliang Zhao , Jianjian Li , Ronghao Zeng , Zhihong Zhang","doi":"10.1016/j.jterra.2023.10.002","DOIUrl":"https://doi.org/10.1016/j.jterra.2023.10.002","url":null,"abstract":"<div><p>Distinct physical properties of red clay soil in hilly and mountainous regions of southwest China, including high adhesiveness and density, challenge the operation of agricultural machinery. A scarcity of accurate discrete element simulation parameters for this soil type restricts computational modeling. The study was focused on red clay soil with a moisture content of 12.50% ± 1% and a measured repose angle of 35.54°. The soil's inherent physical properties were identified through experimental assessments. Soil contact mechanical parameters were obtained from the GEMM database, and optimal contact parameter ranges were determined using Steepest Ascent Experiments, with the simulated soil particle repose angle serving as the response value. A second-order regression model was developed using a quadratic regression rotation orthogonal combination test. By taking the actual repose angle as the optimization criterion, parameters were optimized. The optimal contact mechanical parameters in EDEM simulations were identified as: JKR surface energy at 8.981 J/m<sup>2</sup>, recovery coefficient at 0.474, dynamic friction coefficient at 0.196, and static friction coefficient at 0.45. The model yielded a repose angle of 36.21°, closely corresponding with the observed value, with a relative error of 1.80%. The parameters calibrated in this study offer a valuable reference for future soil-tool interaction studies and tillage implement optimization in these regions.</p></div>","PeriodicalId":50023,"journal":{"name":"Journal of Terramechanics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49876189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep learning-based soil compaction monitoring: A proof-of-concept study 基于深度学习的土壤压实监测:概念验证研究

IF 2.4 3区工程技术

Journal of Terramechanics Pub Date : 2023-10-11 DOI: 10.1016/j.jterra.2023.10.001

Shota Teramoto , Shinichi Ito , Taizo Kobayashi

{"title":"Deep learning-based soil compaction monitoring: A proof-of-concept study","authors":"Shota Teramoto , Shinichi Ito , Taizo Kobayashi","doi":"10.1016/j.jterra.2023.10.001","DOIUrl":"https://doi.org/10.1016/j.jterra.2023.10.001","url":null,"abstract":"<div><p>The dynamic behavior of the vibratory drum of a soil compactor for earthworks is known to be affected by soil stiffness. Real-time monitoring techniques measuring the acceleration of vibratory drums have been widely used for soil compaction quality control; however, their accuracy can be affected by soil type and conditions. To resolve this problem, a novel deep learning-based technique is developed. The method allows the regression estimation of soil stiffness from vibration drum acceleration responses. By expanding the range of applicability and improving accuracy, the proposed method provides a more reliable and robust approach to evaluate soil compaction quality. To train the estimation model, numerous datasets of noise-free waveform data are numerically generated by solving the equations of motion of the mass–spring–damper system of a vibratory roller. To validate the effectiveness of the proposed technique, a field experiment is conducted. A good correlation between the estimated and measured values is demonstrated by the experimental results. The correlation coefficient is 0.790, indicating the high potential of the proposed method as a new real-time monitoring technique for soil compaction quality.</p></div>","PeriodicalId":50023,"journal":{"name":"Journal of Terramechanics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49876188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0