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Numerical Analysis of the Stress Distribution in Tube Structures with Multiple Internal Tubes

机译：多种内部管管结构应力分布的数值分析

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摘要

A simple numerical modelling technique is proposed for estimating the stress distribution in columns of framed tube structures with multiple internal tubes. The structures are analysed using a continuum approach in which each tube is individually modelled by a tube beam that accounts for the flexural and shear deformations, as well as the shear lag effects. The method idealises the discrete tubes-in-tube structures as an assemblage of equivalent multiple tubes each composed of orthotropic plate panels [1]. By simplifying assumptions regarding the form of strain distributions in external and internal tubes, the structural behaviour is reduced to the solution of a single second order linear differential equation. The simplicity and accuracy of the proposed method are demonstrated through the solutions of three numerical examples.
机译：提出了一种简单的数值建模技术，用于估计具有多个内部管的框架管结构列中的应力分布。使用连续的方法进行分析结构，其中每个管通过占弯曲和剪切变形的管梁单独建模，以及剪切滞后效果。该方法理想地理想离散管结构作为当量多个管的组合，每个多管由正向板板组成[1]。通过简化关于外部和内部管中的应变分布形式的假设，结构行为降低到单个二阶线性微分方程的解决方案。通过三个数值例子的溶解度证明了所提出的方法的简单性和准确性。

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