STRUCTURAL ANALYSIS OF CORN SILO BY COMPUTING VERTICAL AND LATERAL FORCES

Ismail BOGREKCI, Hilmi Saygin SUCUOGLU, Pinar DEMIRCIOGLU, Ogulcan TURHANLAR

Abstract


Grainy products cause to pressures at horizontal and vertical directions in bottom floor and the walls of silos. The forces applied to silos from the grains depend upon the mostly moisture content, frictions and thermal expansions. This study focuses on the fact that the product formed by the stored granular products has semi fluid property for the calculation of the pressures. The loads act on a corn silo; lateral design pressures, static vertical pressure and vertical frictional forces were calculated. The structural strength of the designed corn silo was analyzed with FEA (Finite Element Analysis) methods using Ansys Workbench Static Structural Tool. Janssen’s equations were used for lateral design pressures and vertical forces since the height of the designed silo was more than the diameter of that. The calculated loads and fixed surfaces were defined in the analysis environment. The mechanical safety of the design and appropriateness of the selected material for the structure (S 235 Steel) were checked. The occurred maximum stress, strain, deflection and safety factor were obtained as 123.6MPa, 0.089 %, 0.47mm and 1.9, respectively for critical regions. The results from the analysis showed that the designed system was mechanically safe enough to store 15 tones corn within the volume of 46.2m3


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References


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