Strength analysis of subsoiler tooth
2024
Caban, Jacek | Nieoczym, Aleksander | Krzywonos, Leszek
Working with a subsoiler is an agro-amelioration procedure consisting in loosening the soil without turning it over, at a depth greater than the depth of ploughing with a traditional plough. Subsoiling is intended to loosen excessively compacted layers of the soil profile in order to rebuild its porous structure ensuring proper circulation of water and air in the soil. The operation of agricultural machines for field tasks, including soil loosening and ploughing, involves wear and tear of the main working elements. The wear mechanism depends on the loads, the working environment, including the type of soil and possible contamination, e.g. in the form of stones. The article presents solid models and strength analyses using the finite element method. The aim was to compare the influence of the tooth shape: an arched tooth shape and an intermediate tooth shape combining the features of an arched tooth with a flat tooth. Simulations of the working environment concerned loads when loosening light and heavy soil and when hitting a non-deformable element. The issue of the influence of the tooth shape on its strength was solved during the simulation of the operation of the subsoiler. In an arched tooth and a tooth with the characteristics of an arched and straight tooth, stresses of similar values are generated. Differences appear on surfaces with geometric notch features. The greatest differences were noted when simulating a tooth hitting a stone, in which case the arch tooth would be damaged.
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Editeur Latvia University of Life Sciences and Technologies
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