Vol.22, No.2, 2022, pp. 253–256


Khalefa Alnagasa1, Radovan Petrović1*, Andrzej Banaszek2, Maja Anđelković1, Radoje Cvejić1, Slavica Mihajlović3, Igor Martić4

1) University ‘Union-Nikola Tesla’, Faculty of Information Technology and Engineering, Belgrade, SERBIA

*email: radovan4700@yahoo.com

2) West Pomeranian University of Technology, Marine Research and Transport Faculty, Szczecin, POLAND

3) Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, SERBIA

4) University of Belgrade, Innovation Centre of the Faculty of Mechanical Engineering, Belgrade, SERBIA



The paper presents the design of a spherical tank using a combination of analytical procedure with FEM analysis and experimental testing in order to minimize design time and verify the design strength. The analytical procedure for calculating the tank strength in the initial stages of the design process is briefly presented. Based on analytical results, the tank is designed and by created FEM model. FEM analysis is used to identify areas of high stress concentration. FEM results show that the equivalent value of stress at the points of spherical tank support exceeds the values of yield stress, but not significantly and in a very small area, so the overall design is deemed worthy. Experimental measurements verify FEM results that show it is not necessary to reinforce the spherical tank at the points of support. After 8 months, experiments are repeated giving the same results as the original measurements, thus justifying the decision not to reinforce tank supports.

Keywords: analytical stress assessment, experimental testing, finite element method (FEM), spherical tank

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