Simulation of clay soil de-compaction using discrete element method

Main Article Content

Elvis López-Bravo

Abstract

Draft force prediction and soil mechanical behavior during soil de-compaction was implemented by the Discrete Element Method. The model parameters were defined basic on the clay soil mechanical properties previously obtained by laboratory tests. The properties used by the model are: cohesion, adhesion, internal friction, external friction, Young’s modulus and Poisson’s coefficient. The effects of the subsoiler shapes variation were simulated under dry-compacted soil conditions, showing clear variations in forces related with tool geometry. Increasing in complexity of the tool geometry the simulation shows advantageous in terms of demanded pressure and volume of soil disrupted. The soil de-compaction with hardpan formation was also simulated by introducing two different compacted soil sections in the virtual block. The compaction level was defined by two set of micro-particles with different density resulting from modify the soil dry bulk density at the model macro-parameter. The simulation shows the feasibility of modelling separately the forces demanded for the different part of the tillage tool and the soil particle pattern of movement during the operation.

Article Details

How to Cite
López-Bravo, E. (2019). Simulation of clay soil de-compaction using discrete element method. Revista Ciencias Técnicas Agropecuarias, 28(2). Retrieved from https://revistas.unah.edu.cu/index.php/rcta/article/view/1113
Section
Original Articles

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