Three-dimensional discrete element modelling of tillage: Determination of a suitable contact model and parameters for a cohesionless soil

M Ucgul, JM Fielke, C Saunders - Biosystems Engineering, 2014‏ - Elsevier
Highlights•The plastic deformation of soil must be considered in DEM of soil–tool
interaction.•DEM parameters can be determined using angle of repose and penetration …

3D DEM tillage simulation: Validation of a hysteretic spring (plastic) contact model for a sweep tool operating in a cohesionless soil

M Ucgul, JM Fielke, C Saunders - Soil and Tillage Research, 2014‏ - Elsevier
Discrete element modelling (DEM) is a numerical method for examining the dynamic
behaviour of granular media. To enable an accurate DEM simulation to be run appropriate …

Discrete element modelling of tillage forces and soil movement of a one-third scale mouldboard plough

M Ucgul, C Saunders, JM Fielke - Biosystems Engineering, 2017‏ - Elsevier
Highlights•DEM has the potential to predict top soil burial of inversion tillage tools.•Soil bin
tested and DEM predicted forward soil movement show a consistent trend.•DEM simulated …

A review of the tractive performance of wheeled tractors and soil management in lowland intensive rice production

A Keen, N Hall, P Soni, MD Gholkar, S Cooper… - Journal of …, 2013‏ - Elsevier
This paper reviews the cultivation practices and tractive performance using wheeled tractors,
and how these interact with soil management, in lowland intensive rice production. The …

Simulation of tillage forces and furrow profile during soil-mouldboard plough interaction using discrete element modelling

M Ucgul, C Saunders - Biosystems Engineering, 2020‏ - Elsevier
Highlights•DEM can be used to model mouldboard plough interaction.•DEM can predict
draught forces better than analytical methods.•Furrow profile can be predicted using …

Discrete element method (DEM) simulation to improve performance of a mouldboard skimmer

C Saunders, M Ucgul, RJ Godwin - Soil and Tillage Research, 2021‏ - Elsevier
Historically, most mouldboard plough research has been focused on improving the
performance of the mouldboard itself, with very little focus on other plough components such …

Comparison of the discrete element and finite element methods to model the interaction of soil and tool cutting edge

M Ucgul, C Saunders, JM Fielke - Biosystems Engineering, 2018‏ - Elsevier
Highlights•Effect of soil cutting edge geometry on tillage forces was modelled using
DEM.•Effect of soil cutting edge geometry on soil movement was modelled using DEM.•DEM …

Prediction of draft forces in cohesionless soil with the Discrete Element Method

M Obermayr, K Dressler, C Vrettos… - Journal of Terramechanics, 2011‏ - Elsevier
The Discrete Element Method (DEM) is applied to predict draft forces of a simple implement
in cohesionless granular material. Results are compared with small-scale laboratory tests in …

Strategic tillage in Australian conservation agricultural systems to address soil constraints: How does it impact weed management?

MS Mia, G Azam, S Nouraei, C Borger - Weed Research, 2023‏ - Wiley Online Library
In the conservation agricultural systems practised in Australia, cultivation is not commonly
utilised for the purpose of weed control. However, occasional use of tillage (strategic tillage) …

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

M Naderi-Boldaji, SH Karparvarfard… - Journal of …, 2023‏ - Elsevier
Prediction models for draught of tillage implements using soil variables which can be readily
measured in the field are important tools in agricultural machinery management. In our …