Abstract
The strength properties of grains must be taken into account in the development and modernization of machinery and equipment for the implementation of many technological processes in agricultural production. Known devices and methods for determining the forces of destruction of grains under external influences are considered. A device has been developed for studying the process of deformation and destruction of grains under static compression, which makes it possible to establish the strength properties of various grain materials. The results of studies on the deformation and destruction of wheat grain under static compression are presented. It has been established that, regardless of the spatial orientation of the grain, the dependence of the deformation on the loading force has straight sections, indicating its uniform compaction. An abrupt increase in deformation occurs when the grain of wheat is oriented with the groove up and the load P = 10.37 kgf, after which there is no significant increase in deformation with an increase in P to 11.67 kgf. With further loading within P = 12.04 - 15.18 kgf, the grain deformation increases again with its compaction. At a load P = 15.55 kgf, an abrupt increase in deformation is again observed, after which the grain was destroyed. In the case of grain orientation with a groove down, a characteristic jump-like increase in its deformation occurred at a force of 17.31 kgf, which is 6.94 kgf more than in the opposite placement. After that, the dynamics of deformation increased significantly, and the destruction of the grain occurred at a force of 19.25 kgf, which is only 3.51 kgf higher than the similar value for the grain oriented with the groove up.
Published Version
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