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Materials 2013, 6(9), 3978-3988; doi:10.3390/ma6093978
Article

Constitutive Behavior and Finite Element Analysis of FRP Composite and Concrete Members

1
 and
2,*
1 Department of Civil and Environmental Engineering, Ansan 426, Korea 2 School of Architecture, Chosun University, Gwangju 501, Korea
* Author to whom correspondence should be addressed.
Received: 23 July 2013 / Revised: 19 August 2013 / Accepted: 3 September 2013 / Published: 10 September 2013
(This article belongs to the Special Issue Constitutive Behavior of Composite Materials)
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Abstract

The present study concerns compressive and flexural constitutive models incorporated into an isoparametric beam finite element scheme for fiber reinforced polymer (FRP) and concrete composites, using their multi-axial constitutive behavior. The constitutive behavior of concrete was treated in triaxial stress states as an orthotropic hypoelasticity-based formulation to determine the confinement effect of concrete from a three-dimensional failure surface in triaxial stress states. The constitutive behavior of the FRP composite was formulated from the two-dimensional classical lamination theory. To predict the flexural behavior of circular cross-section with FRP sheet and concrete composite, a layered discretization of cross-sections was incorporated into nonlinear isoparametric beam finite elements. The predicted constitutive behavior was validated by a comparison to available experimental results in the compressive and flexural beam loading test.
Keywords: FRP and concrete composite; constitutive behavior; compressive test; bending test; mixed finite element FRP and concrete composite; constitutive behavior; compressive test; bending test; mixed finite element
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Ann, K.Y.; Cho, C.-G. Constitutive Behavior and Finite Element Analysis of FRP Composite and Concrete Members. Materials 2013, 6, 3978-3988.

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