Flexural analysis of reinforced fibrous concrete members using the finite element method

Al-Ta'an, Saad Ali; Ezzadeen, N.A.

doi:10.1016/0045-7949(95)93124-8

Cited by 14 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Steel fibers have been used to improve the flexural and shear resistance of reinforced concrete slabs [5][6][7][8][9][10][11]. Nonlinear finite element (FE) analysis is used extensively for the analysis of fiber reinforced concrete (FRC) members [12][13][14]. Geometrical and material nonlinearity due to tensile cracking, bond-slip between the tension reinforcement bars and the surrounding concrete, nonlinear behavior of concrete in compression have been considered.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Finite Element Analysis of Fiber Reinforced Concrete Slabs

Al-Ta'an¹,

Abdul-Razzak²

2021

ETJ

View full text Add to dashboard Cite

This paper presents a study on the behavior of fiber reinforced concrete slabsusing finite element analysis. A previously published finite element program is used for the nonlinear analysis by including the steel fiber concrete properties. Concrete is represented by degenerated quadratic thick shell element, which is the general shear deformable eight node serendipity element, and the thickness is divided into layers. An elastic perfectly plastic and strain hardening plasticity approach are used to model the compression behavior of concrete.The reinforcing bars were smeared within the concrete layers and assumed as either an elastic perfectly plastic material or as an elastic-plastic material with linear strain hardening. Cracks initiation is predicted using a tensile strength criterion. The tension stiffening effect of the steel fibers is simulated using a descending parabolic stress degradation function, which is based on the fracture energy concept. The effect of cracking in reducing the shear modulus and the compressive strength of concrete parallel to the crack direction is considered. The numerical results showedgood agreement with published experimental results for two fibrous reinforced concrete slabs.

show abstract

Section: Introductionmentioning

confidence: 99%

Nonlinear Finite Element Analysis of Fiber Reinforced Concrete Slabs

Al-Ta'an¹,

Abdul-Razzak²

2021

ETJ

View full text Add to dashboard Cite

show abstract

“…K f = surface shape factor for the steel fibres = 1.0 for smooth fibres, 1.25 for hooked fibres and 1.5 for crimped fibres [16].…”

mentioning

confidence: 99%

Softened Truss Model Theory for the Analysis of Fibre Reinforced Concrete Deep Beams and Corbels - E

Al-Ta'an¹,

Al-Husaini²

2014

(AREJ)

View full text Add to dashboard Cite

Reinforced concrete members may be subjected to axial load, bending moment, shear and torsion. However the behaviour of these members under shear or combined shear and torsion is a complex phenomenon. In this study the softened truss model theory is applied for the analysis of fibre reinforced concrete deep beams and corbels. The theory is more promising than the strut and tie model which satisfies the equilibrium conditions and to some extent materials constitutive relationships. While this theory, considers the equilibrium, compatibility, materials constitutive relationships and the degrading effect of the diagonal tension cracks on the compressive strength of cracked reinforced concrete element when subjected to biaxial compression-tension stresses. The previously developed algorithms for the analysis were modified by incorporating the effect of short discrete steel fibres on the behaviour and strength of concrete subjected to shear. Fibre reinforced concrete deep beams and corbels were analyzed using the adopted algorithm and materials constitutive relationships. The predicted effects of the shear span / depth ratio, volume fraction of steel fibres and the longitudinal steel ratio on the shear strength of fibre reinforced concrete deep beams and corbels showed good agreement with published experimental results.

show abstract

“…In order to include the effect of fiber shape a so-called (shape factor) k f 10 . [14][15][16] is incorporated into Eq. (30), then G f = Fracture energy as derived in Ref.…”

mentioning

confidence: 99%