Interactive Resource icon  Axial Force Resistance of Members in Compression

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Description: The lower modulus of elasticity E of aluminium means that a member in axial compression is more sensitive to flexural buckling than for a corresponding member of steel. To compensate for the low value of E the second moment of area I of the cross section should be increased as much as possible to get the best stiffness EI. In this example the resistance of members with different cross sections are calculated to find the most efficient one. To optimise the cross section there is a balance between increasing the stiffness EI and reducing the effective cross secction area A.
Keywords: cross section • compression • resistance
Categories: Materials > Metals & alloys > Aluminium & alloys
Applications > Construction
Properties > Mechanical & thermal
Other topics > Design
Created by: MATTER, The University of Liverpool
Frans Soetens, TNO
Torsten Höglund, KTH Royal Institute of Technology, Stockholm
Contributions: Jürgen Hirsch, Hydro Aluminium Deutschland GmbH
Jan Rothe, Rio Tinto Alcan
Steinar Lundberg, Hydro Aluminium Structures, Karmoy
Marc Ryckeboer, Sapa
Published by: European Aluminium Association, Brussels
License: This resource is released under the Creative Commons Attribution Non-Commercial No Derivatives license (2.0 UK: England & Wales).
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Date created: 28 March 2009
Date added: 17 December 2009
Resource ID: 2569