Journal
ENGINEERING STRUCTURES
Volume 151, Issue -, Pages 724-744Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.engstruct.2017.08.027
Keywords
Structural aluminium; Inelastic response; Two-surface hardening model; Generalized stress plasticity; Shakedown analysis; Collapse safety factor
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In the present work a novel approach is proposed for determining the safety factor of spatial aluminium frarhe structures against elastoplastic collapse. For the purposes of the study, a two-surface shakedown based technique is developed, exploiting material's hardening features, tailored to the stress resultant plasticity discipline using linearized forms of codified criteria. This way, the classical advantages of direct methods of plasticity, such as robustness, mono-parametric safety assessment and load history independence are also enabled in the field of aluminium plastic design. Results demonstrate the effectiveness of the applied technique, providing a reliable alternative path for analysing inelastic performance of aluminium structures. (C) 2017 Elsevier Ltd. All rights reserved.
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