scholarly journals Using ABAQUS Finite Element Analysis to Investigate the Influence of FRP Types and Reinforcement Ratio on Flexural Capacity of Beams Reinforced with FRP Rod

2017 ◽  
Author(s):  
Aboubieda Alamin Ahmed Almansoor ◽  
Jianwei TU
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Reinforcement Ratio ◽  
Flexural Capacity ◽  
Element Analysis

Finite Element Analysis of Dynamic Splitting Tensile Mechanical Properties of Reinforced Concrete

2014 ◽  
Vol 941-944 ◽  
pp. 695-700
Author(s):  
Xiao Yan Song ◽  
Pei Wen Zhang
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Tensile Strength ◽  
Reinforced Concrete ◽  
Strain Rate ◽  
Failure Mode ◽  
Splitting Tensile Strength ◽  
Reinforcement Ratio ◽  
Element Analysis

Finite element analysis is carried out on the dynamic splitting tensile mechanical properties of reinforced concrete with LS-DYNA. The impact of strain rate and reinforcement ratio on the dynamic tensile strength and failure mode of reinforced concrete is considered in the calculation. The result shows that the form of reinforcement and reinforcement ratio has a greater impact on the failure mode and tensile strength of concrete. The dynamic splitting tensile strength of reinforced concrete has a certain strain rate effect and its splitting tensile strength increases with the strain rate; the splitting tensile strength of reinforced concrete also increases with its reinforcement ratio.

scholarly journals Finite Element Analysis and Calculation Method of Residual Flexural Capacity of Post-fire RC Beams

2020 ◽  
Vol 14 (1) ◽  
Author(s):  
Bin Cai ◽  
Bo Li ◽  
Feng Fu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Calculation Method ◽  
Concrete Cover ◽  
Fe Model ◽  
Fire Tests ◽  
Rc Beams ◽  
Fire Exposure ◽  
Flexural Capacity ◽  
Element Analysis

Abstract Fire tests and subsequent bending tests of four reinforced concrete (RC) beams were performed. Based on these tests, the post-fire performance of RC beams was further studied using finite-element simulation through reasonable selection of suitable thermal and thermodynamic parameters of steel and concrete materials. A thermodynamic model of RC beams with three sides under fire was built using finite-element analysis (FEA) software ABAQUS. The FEA model was validated with the results of fire tests. Different factors were taken into account for further parametric studies in fire using the propsed FE model. The results show that the main factors affecting the fire resistance of the beams are the thickness of the concrete cover, reinforcement ratio of longitudinal steel, the fire exposure time and the fire exposure sides. Based on the strength reduction formula at high temperature of steel and concrete and four test results, an improved section method was proposed to develop a calculation formula to calculate the flexural capacity of RC beams after fire. The theoretical calculation method proposed in this paper shows good agreement with FEA results, which can be used to calculate the flexural capacity of RC beams after fire.

Experimental Study and Finite Element Analysis of Concrete Simple Supported Beams Strengthened with Externally Prestressed CFRP Tendons

2013 ◽  
Vol 405-408 ◽  
pp. 1017-1021
Author(s):  
Feng Xu ◽  
Le Huang
Keyword(s):  
Finite Element Analysis ◽  
Experimental Study ◽  
Finite Element ◽  
Engineering Application ◽  
Finite Element Calculation ◽  
Test Results ◽  
Element Calculation ◽  
Flexural Capacity ◽  
Element Analysis ◽  
Stress Changes

The concrete simple supported beams were strengthened by an innovative device mainly includes oblique screws and linear CFRP tendons. A static experimental study and finite element analysis were conducted to research the flexural capacity and stress changes of CFRP tendons of strengthened beams, and the contrastive analysis was explored between finite element calculation results and test results. The results indicate that the strengthen system can significantly improve the flexural capacity of concrete beams, there is basically a linear relationship between the stress increment of CFRP tendon and the deflection of midspan section, and the finite element calculation value is in agreement with the test results. Based on this, the stress of concrete near holes was analysed using finite element method (FEM), which can provide a reference for practical engineering application.

Finite Element Analysis on Creep and Shrinkage of Reinforced Concrete

2013 ◽  
Vol 838-841 ◽  
pp. 53-56
Author(s):  
Yun Tao Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Engineering Application ◽  
Reinforcement Ratio ◽  
Element Analysis ◽  
Finite Element Software ◽  
Steel Bar ◽  
Creep And Shrinkage ◽  
Good Agreement

The finite element software ANSYS/CivilFEM was applied to analyses the influence of steel bar restraint on creep and shrinkage of reinforced concrete. The analysis results are in good agreement with the experiment results. When the reinforcement ratio is low, the steel bar exerts less influence on creep and shrinkage, and the influence of steel bar can be neglected in engineering application. However, the reinforcement can effectively reduce creep and shrinkage development when the reinforcement ratio is high.

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