DEM modeling of wood sawdust compaction and breakage strength of pellets determined in diametral compression test
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Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland
Faculty of Engineering, Slovak University of Agriculture, Trieda A. Hlinku 2, 949 76 Nitra, Slovak Republic
Józef Horabik   

Dept. of Physical Properties of Plant Materials, Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290, Lublin, Poland
Final revision date: 2022-10-24
Acceptance date: 2022-10-26
Publication date: 2023-01-27
Int. Agrophys. 2023, 37(1): 51–58
  • sawdust pellets; diametral compression; tensile strength, DEM
Sawdust from six wood species typical of Eastern Europe: beech (Fagus L.), birch (Betula L.), oak (Quercus L.), pine (Pinus sylvestris L.), poplar (Populus L.) and willow (Salix L.) with a moisture content of 8% were compacted at a compressive pressure of 120 MPa in a laboratory mould with a diameter of 10 mm. Diametral compression tests were performed to determine the mechanical strength of the pellets. Discrete element method simulations were performed to reproduce the compaction process and the mechanical reaction of the pellets to diametral compression. It was found that the difference between the bulk density of the compacted and the relaxed pellets decreased with increases in the breakage strength of a pellet. The DEM simulations reproduced well the experimental data of the diametral compression test.
This work was supported by the Operational Programme–Integrated Infrastructure, Project Drive4SIFood, No. 313011V336 – Demand-Oriented Research for the Sustainable and Innovative Food, co-financed by the European Regional Development Fund (2019-2023).
The Authors declare they have no conflict of interest.
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