www.old.international-agrophysics.org / issues


International Agrophysics
publisher:Institute of Agrophysics
Polish Academy of Sciences
Lublin, Poland
ISSN: 0236-8722


vol. 25, nr. 1 (2011)

previous paper back to paper's list next paper
Moisture-dependent physical properties of rapeseed – experimental and DEM modeling
(get PDF)
J. Wiącek, M. Molenda

vol. 25 (2011), nr. 1, pp. 59-65
abstract A series of tests were conducted to study the influence of moisture content of rapeseed on the physical properties of grain bedding. The load response of a grain assembly poured into a cubical test chamber and subjected to uniaxial confined compression was studied. Tests were conducted for the rapeseed of moisture contents of 7.5, 9, and 12%. It was determined that the load distribution varied considerably with the moisture content of the seeds. The lowest effective elastic modulus was obtained for a grain assembly composed of rapeseeds at moisture content of 12%. Comparison between experimental data and numerical modeling using the discrete element method (DEM) showed both, quantitative and qualitative agreement.
keywords moisture content, grain bedding, uniaxial confined compression, discrete element method