Finite Element Simulation and Parametric Study of Anchored Fiber-Reinforced Polymer Sheets

2018 ◽  
Vol 115 (2) ◽  
Author(s):  
Alaa T. Al-Sammari ◽  
Sergio F. Breña
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Parametric Study ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Element Simulation ◽  
Polymer Sheets

Finite Element Simulation of RC Beam Strengthened with FRP

2012 ◽  
Vol 446-449 ◽  
pp. 3229-3232
Author(s):  
Chao Jiang Fu
Keyword(s):  
Experimental Data ◽  
Finite Element Method ◽  
Finite Element ◽  
Numerical Analysis ◽  
Finite Element Simulation ◽  
Fiber Reinforced Polymer ◽  
Rc Beam ◽  
The Finite Element Method ◽  
Reinforced Polymer ◽  
Element Simulation

The finite element modeling is established for reinforced concrete(RC) beam reinforced with fiber reinforced polymer (FRP) using the serial/parallel mixing theory. The mixture algorithm of serial/parallel rule is studied based on the finite element method. The results obtained from the finite element simulation are compared with the experimental data. The comparisons are made for load-deflection curves at mid-span. The numerical analysis results agree well with the experimental results. Numerical results indicate that the proposed procedure is validity.

A concentric tube anchor system for fiber-reinforced polymer retrofit of reinforced concrete structural walls under extreme loads

2017 ◽  
Vol 9 (1) ◽  
pp. 77-98 ◽  
Author(s):  
David T Lau ◽  
Joshua E Woods
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Shear Walls ◽  
Fiber Reinforced Polymer ◽  
Experimental Program ◽  
Design Parameters ◽  
Fiber Reinforced ◽  
Anchor System ◽  
Reinforced Polymer ◽  
Polymer Sheets

In reinforced concrete elements strengthened with fiber-reinforced polymer sheets, premature debonding of the fiber-reinforced polymer from the concrete substrate occurs due to lack of anchorage, which reduces the efficiency of the retrofitting system. This article reviews several common anchor systems and describes the development, optimization, and testing of a steel tube anchor in retrofit of reinforced concrete structural elements using externally bonded fiber-reinforced polymer sheets suitable for application to improve resistance against extreme load conditions (e.g. blast, impact, or an earthquake). A detailed review of common anchor designs including the proposed tube anchor based on previous studies on flexure-dominated fiber-reinforced polymer-strengthened reinforced concrete shear walls is presented. In this study, finite element analysis is conducted to verify the observed behavior and better understand the deformation mechanisms of the tube anchor. Finite element modeling is then used to evaluate the influence of different design parameters on its performance and propose a design methodology that can be used to optimize the tube anchor design. To verify the performance of the optimized tube anchor, it is tested in an experimental program on the in-plane seismic strengthening of two shear-dominated squat walls strengthened using fiber-reinforced polymer sheets. Experimental results reveal that the optimized tube anchor performs well in preventing premature debonding and allows the fiber-reinforced polymer composite to achieve a higher level of strain when compared to an alternative anchor system. Finally, a set of design steps for the implementation of the tube anchor in fiber-reinforced polymer retrofit applications for reinforced concrete shear walls are presented.

Interface Bonding Property Finite Element Simulation of Mo Fiber-Reinforced Polymer Concrete

2015 ◽  
Vol 1120-1121 ◽  
pp. 1501-1505
Author(s):  
Xiu Hua Ren ◽  
Jian Hua Zhang ◽  
Wen Qiang Wang ◽  
Ji Cai Yin
Keyword(s):  
Finite Element ◽  
Fiber Reinforced Polymer ◽  
Polymer Concrete ◽  
Interface Bonding ◽  
Fiber Reinforced ◽  
Bonding State ◽  
Reinforced Polymer ◽  
Element Simulation ◽  
Bonding Property ◽  
Fiber Number

Interface bonding property of Mo-fiber reinforced polymer concrete not only depends on its material properties of components but also on microstructure characteristics of fibers including surface state, fiber content, fiber shape, bonding state between fiber and matrix, and so on. Interface bonding mechanism was firstly analyzed in the paper, and finite element simulation was employed to study the influence of fiber surface state, fiber number, bonding state between fiber and resin on interface property respectively. Research results show that the addition of Mo fibers can effectively restrain deformation of matrix, and scrap Mo fibers used as tool electrode material in Wire Electrical Discharge Machining before can improve interface bonding strength better than new smooth Mo fibers. With the increase of fiber number, deformation of the composite is decreasing. When fiber number is identical, maximum deformation of new and scrap Mo fiber-reinforced matrix in complete bonding state is respectively decreased by 12.6% and 14.5% on average compared with in complete debonding state.

Evaluation and prediction of carbon fiber–reinforced polymer cable anchorage for large capacity

2019 ◽  
Vol 22 (8) ◽  
pp. 1952-1964 ◽  
Author(s):  
Bo Feng ◽  
Xin Wang ◽  
Zhishen Wu
Keyword(s):  
Finite Element ◽  
Stress Concentration ◽  
Carbon Fiber ◽  
Load Transfer ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Anchorage System ◽  
Element Simulation

Aiming to address the problems of stress concentration on conical wedge anchorage, a fiber-reinforced polymer cable anchorage with segmental variable stiffness of the load transfer medium was proposed. The key parameters that affect the anchorage behavior were investigated. The mechanical properties of the carbon fiber–reinforced polymer tendon and load transfer medium were tested. The failure mode, anchoring efficiency, stress, and displacement in the anchor zone were studied. The parameter optimization was performed using an experimentally verified finite element simulation. The parameters of the anchorage system with large capacity were evaluated. The results demonstrate that the compressive strength of the load transfer medium is the designed stress limit for the anchorage system. The cable does not slip or become damaged in the anchor zone, and the anchoring efficiency reaches 91%. The distribution of the shear and radial stress on the cable surface is smooth, and the stress concentration is greatly relieved. The result of the finite element simulation is consistent with the experimental values when the friction coefficient is 0.15, and the material and geometric parameters of the anchorage system with cable forces of 5000, 10,000, 15,000, and 20,000 kN are suggested. The geometric parameters of the anchor system with diverse cable capacity can be preliminarily designed based on the fitting equations.

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