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Research on the Stability of a Large-diameter Ground-supported Flat-bottomed Cylindrical Steel Silo Load of Alumina Powder

Author: SiAiLi
Tutor: YangYingHua
School: Xi'an University of Architecture and Technology
Course: Structural Engineering
Keywords: large-diameter ground-supported flat-bottomed cylindrical steel silo finite element analysis buckling analysis ANSYS software Mises stress
CLC: TU391
Type: Master's thesis
Year: 2009
Downloads: 82
Quote: 1
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Abstract


Soils are widely used for the storage of bulk solids in industry and agriculture.At present,the majority of alumina factory use large-diameter ground-supported flat-bottomed cylindrical steel silo for storaging alumina.These silos’ geometry and characteristics of storage beyond the relevant codes for design of silo. The study used ANSYS which is finite element analysis software to analysis silos’ stability.Steel silos’ wall is a cylindrical shell structure, the main impact factors of cylindrical shell structural’s stability include vertical pressure from soil’s covered and radial pressure and vertical friction caused by storage. The silo’s covered is calculated by a actual value of projects.The pressure caused by storage are calculated according to Chinese code for design of grain steel silos, international code ISO11697 and German code DIN1055. Finally, all the forces are imposed on the silo’s finite element model, research silos’ stability.This paper studies silos’ stability by two models.the one is the load from silos’ covered remains unchanged, so that changes the storage load to achieve silo buckling. The other is storage load remains unchanged, so that changes the load from silos’ covered to achieve silo buckling.The buckling analytical methods include linear buckling analysis and non-linear buckling analysis, nonlinear buckling analysis as follows: geometric non-linear buckling analysis of perfect/imperfect silo, geometrically and materially non-linear buckling analysis of the perfect/imperfect silo. Finally,this paper compares the results of linear buckling analysis and non-linear buckling analysis.

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CLC: > Industrial Technology > Building Science > Building structure > Metal structures > Steel
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