Journal
THIN-WALLED STRUCTURES
Volume 122, Issue -, Pages 585-596Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.tws.2017.11.003
Keywords
Aluminum alloy; Large-section; Experimental investigation; Parametric analysis; Finite element analysis
Categories
Funding
- National Natural Science Foundation of China [51038006]
- Special Research Fund for the Doctoral Program of Higher Education [20110002130002]
- Tsinghua Fudaoyuan Research Fund
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Experimental investigation was conducted on large-section extruded aluminum alloy columns of I-section and rectangular hollow section (RHS). Altogether seven columns with different slenderness ratios were comprised. The failure modes and stability resistance as well as load-displacement responses were identified. It was found that all tested specimens failed in flexural buckling. An extensive parametric analysis on 180 specimens was carried out with general FEA software ANSYS to evaluate the reliability level of the current design specifications including American aluminum design manual, Eurocode 9 and Chinese code GB 50429. The design stability resistance advised by Eurocode 9 and Chinese code GB 50429 is conservative, while that of American aluminum design manual slightly overestimates the practical stability resistance. Based on the parametric analysis results, a new design method was proposed to improve the design accuracy.
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