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首页> 外文期刊>Thin-Walled Structures >Determination of buckling strength of silos composed of corrugated walls and thin-walled columns using simplified wall segment models
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Determination of buckling strength of silos composed of corrugated walls and thin-walled columns using simplified wall segment models

机译：使用简化的壁段模型确定由波纹壁和薄壁柱组成的筒仓的屈曲强度

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摘要

The paper deals with buckling of metal cylindrical silos composed of corrugated sheets and thin-walled open-sectional columns. A simplified silo wall segment model with a few columns was proposed for calculations of the global buckling strength of silos instead of comprehensive 3D computations of the entire silo structure. Calculations were carried out for three real silos with a different geometry (two slender silos and one intermediate slender silo). Comprehensive linear bifurcation/buckling analyses and geometrically non-linear stability analyses for both imperfect and perfect silos were applied. Silos and silo wall segments were mainly modelled both with an equivalent orthotropic shell for walls and 1D beam elements for thin-walled columns and with shell elements for walls and columns. The silo walls were loaded by tangential wall pressure, horizontal wall pressure and patch load according to Eurocode 1. The simplified silo wall segment models fully proved their efficiency in FE calculations of the buckling strength of silos.
机译：本文涉及由波纹板和薄壁开放截面柱组成的金属圆柱筒仓的屈曲。提出了一种简化的具有几列的筒仓墙段模型，用于计算筒仓的整体屈曲强度，而不是用于整个筒仓结构的全面3D计算。对具有不同几何形状的三个真实筒仓（两个细长筒仓和一个中间细长筒仓）进行了计算。对不完善和完善的筒仓进行了综合的线性分叉/屈曲分析和几何非线性稳定性分析。筒仓和筒仓墙段的建模主要是用等效的正交各向异性壳壁和薄壁柱的一维梁单元以及用壳单元壁和柱建模。根据欧洲规范1，通过切向壁压力，水平壁压力和贴片载荷对筒仓壁进行加载。简化的筒仓壁段模型充分证明了它们在有限元计算筒仓屈曲强度时的效率。

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