MODEL OF ACTUAL CONTACT AREA OF RYE AND WHEAT GRAINS WITH FLAT SURFACE.

The objective of the research presented was to create a mode determining the relationship between the actual contact area of cereal grains, pressure force and humidity, with the application of artificial neural networks (ANN). As an additional factor describing the grain material, the unit contact area of grain with a flat surface, for a specified pressure force and humidity, was considered. The analysis results proved that the unit contact area determined for the pressure force Nj = 100 N and water content W = 15 kg.kg-1 dry mass should be assumed as a variable characterising the grain material. It was found that the phenomenon studied is best modelled by the three-layer ANN with: three neurons in the first hidden layer, eight neurons in the second hidden layer and one neuron in the output layer [ABSTRACT FROM AUTHOR]