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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Metal Spatial Structures

Finite element analysis on the stability behavior of 7A04 high-strength aluminum alloy angle columns under axial compression

< Table of Contents for Metal Spatial Structures
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Metal Spatial Structures
  • Pages: 10
  • Title: Finite element analysis on the stability behavior of 7A04 high-strength aluminum alloy angle columns under axial compression
  • Author(s): Zhongxing Wang, Yuanqing Wang, Xiaoguang Hu, Haijun Xing
  • Keywords: high-strength aluminum alloy (HSAA), column, finite element analysis, parametric analysis, overall stability, spatial structure
Abstract
In order to investigate the stability behavior of 7A04 high-strength aluminum alloy angle column under axial compression, a finite element (FE) mode was presented in the current paper. Results of the FE model are verified by experimental results. By the verified FE model, a parametric analysis of more than one hundred columns has been conducted to study the effects of initial imperfections, material strength and width-to-thickness ratio. It is found from the FE model that, there are three kinds of failure modes of the specimens including local buckling (lambda<30), flexural-torsional buckling (lambda=30~60) and flexural buckling (lambda=80~100). It is shown from the parametric analysis, when the slenderness ratio is about 80, the influence of imperfection on stability resistance is the greatest; the nominal yield stress doesn't make visible effects on the thin-walled columns and long columns; with slenderness ratio increases, the effect of width-to-thickness ratio becomes insignificant.

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