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Inelastic analysis of composite sections

Thanoon, Waleed Abdulmalik and M. Hamed, Ahmed M. and Noorzaei, Jamaloddin and Jaafar, Mohd Saleh and Al-Silayvani, Bayar J. (2004) Inelastic analysis of composite sections. Computers and Structures, 82 (20-21). pp. 1649-1656. ISSN 0045-7949

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This paper describes the development of a numerical algorithm used for the inelastic analysis of composite sections subjected to combined axial force and bending moment. The algorithm is based on finding the strain distribution across the section for a given applied loads and mechanical properties of the materials. The application of algorithm is illustrated by analysing a reinforced concrete section. The stress–strain relationship adopted for the concrete is based on a non-linear monotonic model, which is capable of predicting both ascending and descending (softening) parts of the stress–strain curve. For the reinforcing steel, the relation assumed to be bi-linear elasto-plastic in tension and compression. The developed algorithm predicts the exact mode of strain distribution for elastic, plastic and elasto-plastic stages of behaviour. Newton–Raphson concept has been implemented to determine the strain distribution across the section. The algorithm can be used to analyse both regular and irregular cross-section geometry, different materials with single or multi-layered steel bars.

Item Type:Article
Keyword:Composite section, Inelastic analysis, Non-linear stress–strain model for concrete, Strain distribution
Faculty or Institute:Faculty of Engineering
DOI Number:10.1016/j.compstruc.2004.05.001
ID Code:8489
Deposited By: Nor Asmalisa Osman
Deposited On:24 Nov 2010 18:11
Last Modified:21 Jan 2016 11:49

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