Year 2019, Volume 4, Issue 1

Year : 2019
Volume : 4
Issue : 1
Authors : Sorin-Ștefan BIRIȘ, Mariana IONESCU, Neluș-Evelin GHEORGHIȚĂ, Nicoleta UNGUREANU, Nicolae-Valentin VLĂDUȚ
Abstract : It is known that the phenomena that occur during compression of sunflower seeds are very complex. Comprehension of these phenomena is important for increasing the performance of the equipment in the vegetable oil industry, both for the cracking of shells and for the grinding of kernels. Also for the pressing of oilseed materials it is helpful to understand the compression behavior of sunflower seeds. The major objective of this work is to find an easy way of highlighting how the stresses and deformations propagate in sunflower seeds kernels and shells during the compression process, with the aim of optimizing the energy consumption required for the mechanical processing. Therefore, now days there is and we can use the finite element method. This method is the most advanced engineering tool for computing numerical and mathematical modeling of complex phenomena involving the propagation of stress and strain fields in continuous media. In this paper a two-dimensional FEM model for analyzing sunflower seeds subjected at compression by axial and lateral directions is presented. For experimental validation of FEM model we made uniaxial compression tests on sunflower seeds, using a Hounsfield/Tinius Olsen unit for mechanical tests, H1KS model. The models used in this work highlight that the orientation of the seeds is very important. There are situations when it is desirable that the stresses to be higher (at shelling, grinding, pressing, etc.) or situations when it is desirable that the stresses to be smaller (at transport, storage, etc.).
For citation : Biriș, S. S., Ionescu, M., Gheorghiță, N. E., Ungureanu, N., Vlăduț, N. V. (2019). Study of the compression behavior of sunflower seeds using the finite element method. AGROFOR International Journal, Volume 4. Issue No. 1. pp. 128-136. DOI: 10.7251/AGRENG1901128B
Keywords : Finite Element Method, Sunflower seeds, Experimental validation, Oil industry
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