Developing Reinforced Concrete Elastic-Plastic Beam Element Model

2006 ◽  
Vol 306-308 ◽  
pp. 535-540 ◽  
Author(s):  
Li Zhang ◽  
Zhan Li Liu ◽  
Zhuo Zhuang ◽  
T. Kanayama
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beam ◽  
Conceptual Models ◽  
Element Model ◽  
Reinforced Concrete Beam ◽  
Beam Element ◽  
Response Analysis ◽  
Linear Section ◽  
Rc Structures ◽  
Elastic Plastic

The response analysis of reinforced concrete (RC) structures subjected to strong earthquake motions require realistic conceptual models. The special models, such as Clough and Takeda, which describe the non-linear section characteristic of reinforced concrete beam and column. In the earthquake motions, the deforming is sensitive to the response of structures intensively. The traditional lumped plastic model inevitably induces inaccuracy. Hence, meshing the members or distributing stiffness along the whole member is employed to simulate the seismic response of the structures. In this paper, Takeda elastic-plastic beam element model has been developed, which is based on general FEM code ABAQUS in order to simulate the response of RC. The influence is discussed due to the different lengths of plastic zone and element sizes.

Uniform loading on the reinforced concrete beam produced by the specific cylinder-shaped rubber bags fully filled with air or water

2020 ◽  
Vol 23 (9) ◽  
pp. 1934-1947
Author(s):  
Dapeng Chen ◽  
Li Chen ◽  
Qin Fang ◽  
Yuzhou Zheng ◽  
Teng Pan
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Finite Element Model ◽  
Concrete Beam ◽  
Concrete Beams ◽  
Element Model ◽  
Reinforced Concrete Beam ◽  
Reinforced Concrete Beams ◽  
Uniform Loading ◽  
Air Bag

The bending behavior of reinforced concrete beams under uniform pressure is critical for the research of the blast-resistance performance of structural components under explosive loads. In this study, a bending test of five reinforced concrete beams with the dimensions of 200 mm (width) × 200 mm (depth) × 2500 mm (length) under uniform load produced by a specific cylinder-shaped rubber bag filled with air or water was conducted to investigate their flexural performances. An air bag load was applied to three of the reinforced concrete beams, a water bag load was applied to one reinforced concrete beam, and the remainder beam was subjected to the 4-point bending load. The experimental results highlighted that the air bag and water bag loading methods can be used to effectively apply uniform loads to reinforced concrete beams. Moreover, the stiffness of the air bag was improved by 123% in accordance with the initial pressure increases from 0.15 to 0.45 MPa. In addition, a finite element model of the test loading system was established using ABAQUS/Standard software. Moreover, the critical factors of the air bag loading method were analyzed using the numerical model. The calculated results were found to be in good agreement with the test data. The established finite element model can therefore be used to accurately simulate the action performances of the uniform loading technique using rubber bags filled with air or water.

Modeling bond-slip deformations in reinforced concrete beam-column joints

2000 ◽  
Vol 27 (3) ◽  
pp. 490-505 ◽  
Author(s):  
Mostafa Elmorsi ◽  
M Reza Kianoush ◽  
W K Tso
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Concrete Beam ◽  
Element Model ◽  
Reinforced Concrete Beam ◽  
Experimental Results ◽  
Reinforcing Bars ◽  
Bond Slip ◽  
Joint Element ◽  
Column Joint

A new finite element model for reinforced concrete beam-column joints is proposed. The model considers the effects of bond-slip and shear deformations in the joint panel region. The problems associated with modeling bond-slip of anchored reinforcing bars are discussed. The proposed bond-slip model is examined at the element level by comparing its predictions with other analytical and experimental results. The ability of the model to simulate bond deterioration and eventual pullout of anchored reinforcing bars under severe cyclic excitation is demonstrated. This model is incorporated into the global beam-column joint element. Further comparisons are made between the predictions of the proposed beam-column joint model and other analytical and experimental results under reversed cyclic loading to show the validity of the model to describe the bond-slip behavior of the joints.Key words: bond, bond-slip, finite element, beam-column, reinforced concrete, cyclic.

Numerical Analysis on Steel Reinforced Concrete Beam-Concrete Filled Steel Tubular Column under Cyclic Loading

2012 ◽  
Vol 588-589 ◽  
pp. 203-207
Author(s):  
Chi Yun Zhao ◽  
Hua Li ◽  
Li Yun Li
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Numerical Analysis ◽  
Concrete Beam ◽  
Element Model ◽  
Simulation Method ◽  
Reinforced Concrete Beam ◽  
Steel Reinforced Concrete ◽  
Finite Element Software ◽  
Composite Joint

The nonlinear behavior of the full scale test of the composite joint between steel reinforced concrete beam and concrete filled steel tubular column under low cyclic reversed loading are simulated by using finite element software ANSYS. A separated model was used, element concrete solid 65, element shell 181 and element link 8 were used to model concrete material, steel members and steel bars respectively. The numerical analysis results are compared with the data of the experimental research. The advantages and shortcoming of the finite element model are given. A better numerical simulation method and a use for reference to the similar case are expected to be afforded.

scholarly journals Scrutiny of a RCC Beam by Ansys with Non-Identical Collapsed Mechanisms under Assorted Loading Conditions

2019 ◽  
Vol 9 (1) ◽  
pp. 6577-6585
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Experimental Work ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Beam Element ◽  
Loading Conditions ◽  
Data Source ◽  
Numerical Examination

Scrutiny of reinforced concrete beam by Ansys with non-identical collapsed mechanisms under assorted conditions. As per is code: IS: 456-2000. to evaluation for finite element examination a beam element various kinds of authors are done their research by using software’s like Ansys, abacus, civil FEM, mat-lab from this one they are studied based on various types of work flows regarding fracture proliferation patterns, in this journal i would like to do numerical examination by FEA software as well as experimental work repercussion analogy from data source. Potential of work is based on the design conditions of design of singly reinforced beam doubly reinforced concrete beam.

Analysis of Reinforced Concrete Column Using a Beam-Column Element with a Meshed Section

2011 ◽  
Vol 255-260 ◽  
pp. 1954-1958
Author(s):  
Ling Yuan Zhou ◽  
Qiao Li
Keyword(s):  
Reinforced Concrete ◽  
Stiffness Matrix ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Beam Element ◽  
Reinforced Concrete Column ◽  
Flexibility Matrix ◽  
Stiffness Matrices ◽  
Column Element ◽  
Interpolation Functions

A efficient 3D reinforced-concrete beam element based on the flexibility method and distributed nonlinearity theory is proposed, The sections of the beam element are divided into the plane isoparametric elements in this formulation, the section stiffness matrices are calculated through the integration of stress-strain relations of concrete including reinforcing steel effect in the section. The flexibility matrices of the sections are calculated by inverting the stiffness matrices, and the element flexibility matrix is formed through the force interpolation functions. The element stiffness matrix is evaluated through the element flexibility matrix. Finally, the buckling behaviors of a reinforced concrete beam under various eccentric loads are analyzed with the proposed formulation to illustrate its accuracy and computational efficiency.

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