Application of Drucker-Prager plasticity model for stress-strain modeling of FRP confined concrete columns

Jiang, J, Wu, Y and Zhao, X 2011, 'Application of Drucker-Prager plasticity model for stress-strain modeling of FRP confined concrete columns', in Heung Fai Lam (ed.) The Proceedings of the Twelfth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC12), Hong Kong SAR, China, 26-28 Janaury 2011, pp. 687-694.


Document type: Conference Paper
Collection: Conference Papers

Title Application of Drucker-Prager plasticity model for stress-strain modeling of FRP confined concrete columns
Author(s) Jiang, J
Wu, Y
Zhao, X
Year 2011
Conference name EASEC12
Conference location Hong Kong SAR, China
Conference dates 26-28 Janaury 2011
Proceedings title The Proceedings of the Twelfth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC12)
Editor(s) Heung Fai Lam
Publisher Elsevier
Place of publication United Kingdom
Start page 687
End page 694
Total pages 8
Abstract Existing research works have identified that Drucker-Prager (DP) plasticity model is capable of modeling the stressstrain behavior of confined concrete. However, the accuracy of the model largely depends on the adequate evaluation of its parameters that determine the yield criterion, hardening/softening rule and flow rule. Up to date, most research works mainly focus on the first two criteria. The plastic dilation angle is the major parameter that governs the DP flow rule. This paper addresses the plastic dilation properties of concrete for FRP confined circular concrete columns under the theoretical framework of DP model in the commercial software ABAQUS. Through careful analyses of test results for FRP confined concrete columns, it is found that the plastic dilation angle is a function of axial plastic strain and the lateral stiffness ratio. A simple model for the plastic dilation angle is subsequently developed. With the implementation of this model, the finite element analysis results fit well with the experimental stress-strain curves for columns with both low and high confinement.
Subjects Structural Engineering
Keyword(s) Drucker-Prager
Plasticity model
FRP confined concrete
Plastic dilation
ABAQUS
DOI - identifier 10.1016/j.proeng.2011.07.088
Copyright notice © by Elsevier B.V. All rights reserved.
ISBN 9781627485630
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