Application of linear buckling sensitivity analysis to economic design of cylindrical steel silos composed of corrugated sheets and columns. (December 2016)

• Record Type: Journal Article
• Authors: Iwicki, P.; Sondej, M.; Tejchman, J.
• Is Part Of: Engineering failure analysis. Volume 70(2016:Dec.)
• Page Start: 105
• Page End: 121
• Publication Date: 2016-12
• Subjects: Columns -- Corrugated walls -- Finite element method -- Linear buckling analysis -- Metal silo -- Sensitivity analysis; System failures (Engineering) -- Periodicals; Fracture mechanics -- Periodicals; Reliability (Engineering) -- Periodicals; Pannes -- Périodiques; Rupture, Mécanique de la -- Périodiques; Fiabilité -- Périodiques; Fracture mechanics; Reliability (Engineering); System failures (Engineering); Periodicals; Electronic journals; 620.112
• DOI: 10.1016/j.engfailanal.2016.07.013
• Languages: English
• ISSNs: 1350-6307

Abstract

Abstract: The paper deals with global stability of steel cylindrical silos composed of corrugated walls and vertical columns with loads imposed by a bulk solid following Eurocode 1. The optimum silo design with respect to the steel weight was based on a sensitivity analysis method. The changes of silo column profiles at each design step were performed by means of influence lines for the buckling load factor due to the unit column bending stiffness variation. The corrugated walls were simulated as an equivalent orthotropic shell and vertical thin-walled columns as beam elements. The results were compared with the Eurocode 3 approach and verified by FE results of linear buckling and non-linear analyses with geometric non-linearity carried out with the commercial finite element code ABAQUS for a 3D shell model of a perfect silo. The proposed procedure allowed for a rational silo design with an economic material use. Some recommendations for the silo optimum design were elaborated. Graphical abstract: Silo weight against column number n with prescribed buckling load factor λ req = 4 ( H = 17.62 m): a) sensitivity design analysis and b) common design procedure based on permissible vertical normal compressive stress The paper deals with global stability of steel cylindrical silos composed of corrugated walls and vertical columns with loads imposed by a bulk solid following Eurocode 1. The optimum silo design with respect to the steel weight was based on a sensitivity analysis method. The corrugated walls were simulated as an equivalent orthotropic shell and vertical thin-walled columns as beam elements. The results were compared with the Eurocode 3 approach and verified by FE results of linear buckling and non-linear analyses with geometric and material non-linearity carried out with the commercial finite element code ABAQUS for a 3D shell model of a perfect silo. Highlights: We deal with global stability of cylindrical metal silos composed of corrugated sheets. The optimum silo design is based on a sensitivity analysis method. FE stability calculations with the finite element method are performed. We compare our results with the Eurocode approach.