The continuous strength method for the design of aluminium alloy structural elements

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Title: The continuous strength method for the design of aluminium alloy structural elements
Authors: Su, M-N
Young, B
Gardner, L
Item Type: Journal Article
Abstract: Aluminium alloys are nonlinear metallic materials with rounded stress–strain curves that are not well represented by the simplified elastic-perfectly plastic material model used in most existing design specifications. Departing from current practice, the continuous strength method (CSM) is a recently developed design approach for aluminium alloy structures, which gives consideration to strain hardening for non-slender sections. The CSM is a deformation-based method and employs a base curve to define the continuous relationship between cross-section slenderness and deformation capacity. This paper explains the background and the two key components of the CSM: (1) the base curve, which is extended herein such that the method covers both non-slender and slender sections and (2) the strain hardening material model. Three international design specifications from America, Australia/New Zealand and Europe, as well as the CSM are compared with approximately 900 aluminium alloy experimental and numerical results. Reliability analyses have been carried out to assess the reliability level of different design methods according to both the American Institute of Steel Construction (AISC) and European Standard (EN 1990) approaches. Finally, worked examples of the CSM for aluminium alloy stub columns and continuous beams are illustrated in this paper.
Issue Date: 9-Jun-2016
Date of Acceptance: 19-Apr-2016
ISSN: 1873-7323
Publisher: Elsevier
Start Page: 338
End Page: 348
Journal / Book Title: Engineering Structures
Volume: 122
Copyright Statement: © 2016 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Keywords: Science & Technology
Engineering, Civil
Aluminium alloys
Base curve
Continuous beams
Continuous strength method (CSM)
Reliability analyses
Simply supported beams
Strain hardening
Structural design
Civil Engineering
0905 Civil Engineering
Publication Status: Accepted
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering

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