scholarly journals Nonlinear Finite Element Analysis of RCMD Beams with Large Circular Opening Strengthened with CFRP Material

2020 ◽  
Vol 26 (11) ◽  
pp. 170-183
Author(s):  
Aya Waleed Naqi ◽  
Alaa H. Al-zuhairi
Keyword(s):  
Finite Element ◽  
Ultimate Load ◽  
Approximate Solutions ◽  
Point Load ◽  
Nonlinear Finite Element ◽  
Experimental Results ◽  
Element Analysis ◽  
Linear Finite Element ◽  
Strengthening Technique ◽  
Good Agreement

This paper presents the non-linear finite element method to study the behavior of four reinforced rectangular concrete MD beams with web circular openings tested under two-point load. The numerical finite elements methods have been used in a much more practical way to achieve approximate solutions for more complex problems.  The ABAQUS /CAE is chosen to explore the behavior of MD beams. This paper also studies, the effect of both size and shape of the circular apertures of MD beams. The strengthening technique that used in this paper is externally strengthening using CFRP around the opening in the MD beams. The numerical results were compared to the experimental results in terms of ultimate load failure and displacement. The FE results showed a good agreement with experimental results.

A study on finite element analysis for simplification of curvature extrusion method

2018 ◽  
Vol 32 (19) ◽  
pp. 1840043
Author(s):  
J. O. Yu ◽  
Y. H. Kim ◽  
Nagamachi Takuo
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Friction Coefficient ◽  
Extrusion Process ◽  
Experimental Results ◽  
Element Analysis ◽  
Extrusion Method ◽  
Good Agreement

To eliminate the complexity of curvature extrusion process, a new extrusion method was proposed. In this study, a finite element analysis for curvature extrusion was studied to commercialize this extrusion method that creates curvature in a tilting method. When simulating an extrusion process, it is important to fix the appropriate friction coefficient and fillet value to avoid peel-out problems such that the finite element disappears. Therefore, the actual extrusion results and the simulated results were compared to find conditions that the element would not disappear. There was a good agreement between the simulation and experimental results when the coefficient friction was 0.4 and the fillet was 0.4 mm.

scholarly journals Nonlinear finite element analysis of profiled steel deck composite slab system under monotonic loading.

2021 ◽  
Author(s):  
Shubhangi Attarde
Keyword(s):  
Finite Element ◽  
Mesh Size ◽  
Monotonic Loading ◽  
Nonlinear Finite Element ◽  
Experimental Results ◽  
Model Parameters ◽  
Element Analysis ◽  
Composite Slab ◽  
Composite Slabs ◽  
Steel Deck

This research concentrated on the nonlinear finite element (FE) modeling of one-way composite floor slab system comprising of profiled steel deck and two types of concrete namely, Engineered Cementitious Composites (ECC) and Self-Consolidating Concrete (SCC). Two FE models were developed based experimental results of composite slabs subjected to in-plane monotonic loading. The simulated load-deflection response, moment resistance, and shear bond capacity using two FE models were in reasonable good agreement with experimental results. The FE models were used in a comprehensive parametric study to investigate the effect of numerical model parameters such as mesh size, dilation angle, steel sheet-concrete interaction contact, material properties and composite slab span. In addition, FE models were used to determine shear bond parameters of ECC and SCC composite slabs that can be used for design purposes.

scholarly journals FINITE ELEMENT ANALYSIS OF T-SECTION RC BEAMS STRENGTHENED BY WIRE ROPE IN THE NEGATIVE MOMENT REGION WITH AN ADDITION OF STEEL REBAR AT THE COMPRESSION BLOCK

2019 ◽  
Vol 81 (4) ◽  
Author(s):  
Yanuar Haryanto ◽  
Hsuan-Teh Hu ◽  
Han Ay Lie ◽  
Anggun Tri Atmajayanti ◽  
Dimas Langga Chandra Galuh ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Nonlinear Finite Element ◽  
Experimental Results ◽  
Reinforced Concrete Beams ◽  
Element Analysis ◽  
Wire Ropes ◽  
Negative Moment ◽  
Story Building ◽  
Steel Rebars

A building whose functions are converted in which their volumes are improved, for example, a four-story building transformed into a five-story building, resulting in a dead load improvement of its structural self-weight, obviously requires strengthening in order to avoid the possibility of structural failures. This paper focuses on a nonlinear finite element analysis conducted using the ATENA program on T-section reinforced concrete beams strengthened in the negative moment region with wire ropes and an addition of steel rebars at the compression block. The results are then compared with the results of the previously conducted experiments. The specimen models consist of control beams (BK), strengthened beams with wire ropes at the tension block (BP1), and strengthened beams with wire ropes at the tension block and steel rebars at the compression block (BP2). The results show that the ratios of the load-carrying capacity against those of the experimental results are 1.25, 1.23, and 0.89 respectively for BK, BP1 and BP2. The effective stiffness ratios to those of the experimental results are 1.45, 1.15, and 1.86, while the ductility index ratios against the experimental results are 1.11, 0.63, and 1.01 respectively for BK, BP1, and BP2. The crack patterns of the nonlinear finite element analytical results revealed that all specimen models experience flexural failure.

scholarly journals Nonlinear finite element analysis of profiled steel deck composite slab system under monotonic loading.

2021 ◽  
Author(s):  
Shubhangi Attarde
Keyword(s):  
Finite Element ◽  
Mesh Size ◽  
Monotonic Loading ◽  
Nonlinear Finite Element ◽  
Experimental Results ◽  
Model Parameters ◽  
Element Analysis ◽  
Composite Slab ◽  
Composite Slabs ◽  
Steel Deck

This research concentrated on the nonlinear finite element (FE) modeling of one-way composite floor slab system comprising of profiled steel deck and two types of concrete namely, Engineered Cementitious Composites (ECC) and Self-Consolidating Concrete (SCC). Two FE models were developed based experimental results of composite slabs subjected to in-plane monotonic loading. The simulated load-deflection response, moment resistance, and shear bond capacity using two FE models were in reasonable good agreement with experimental results. The FE models were used in a comprehensive parametric study to investigate the effect of numerical model parameters such as mesh size, dilation angle, steel sheet-concrete interaction contact, material properties and composite slab span. In addition, FE models were used to determine shear bond parameters of ECC and SCC composite slabs that can be used for design purposes.

Residual Strength of Tubular Columns With Localized Thickness Loss

2021 ◽  
Author(s):  
Mostafa Atteya ◽  
Ove Mikkelsen ◽  
Narve Oma ◽  
Gerhard Ersdal
Keyword(s):  
Finite Element ◽  
Numerical Model ◽  
Experimental Work ◽  
Nonlinear Finite Element ◽  
Ultimate Capacity ◽  
Axial Loads ◽  
Element Analysis ◽  
Tubular Columns ◽  
Nonlinear Finite Element Methods ◽  
Good Agreement

Abstract This paper provides a comprehensive finite element analysis to investigate the ultimate capacity of corroded members under concentric axial loads. The paper investigates previous experimental work on stocky and slender tubular columns with simulated patch corrosion and provides a numerical model that can estimate the columns capacities. Further, a parametric study is performed to investigate the effect of geometric parameters such as location, height, and width of corrosion patch on the ultimate capacity of corroded columns. Finally, the paper presents a comparison between laboratory tests to the formulae of superseded standards and numerical analysis using nonlinear finite element methods. The numerical model proposed in this paper show good agreement with the results from the experimental work.

Tests and Numerical Simulation on Short Composite-Sectioned Concrete Filled Steel Tubular Columns Subjected to Axial Compressive Loading

2011 ◽  
Vol 374-377 ◽  
pp. 2265-2270
Author(s):  
Yang Zhang ◽  
Jia Ru Qian ◽  
Xiao Dong Ji ◽  
Wan Lin Cao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Compressive Strength ◽  
Compressive Loading ◽  
Steel Tube ◽  
Test Results ◽  
Element Analysis ◽  
Linear Finite Element ◽  
Axial Compressive Strength ◽  
Good Agreement

In this paper, axial compressive loading test and non-linear finite element analysis of 10 short composite-sectioned concrete filled steel tubular column specimens are introduced. The test results indicate that the failure modes of all the specimens are similar, the specimens have high axial compressive strength and large deformation capacity. The calculated axial compressive strength of the specimens, assuming that the circle steel tube provides the lateral confinement to the core concrete and the square steel tube provides compressive strength without contributing lateral confinement to the concrete, has good agreement with the measured strength. The vertical load-strain curves, the axial compressive strength and the failure mode obtained by the non-linear finite element analysis of specimens have good agreement with the test results.

Nonlinear Finite Element Analysis of Concrete Continuous Beams with External CFRP Prestressed Tendons

2011 ◽  
Vol 250-253 ◽  
pp. 1433-1439
Author(s):  
Xiao Qing Zeng ◽  
Xin Ding Wang ◽  
Qiu Hua Tang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Relevant Information ◽  
Nonlinear Finite Element ◽  
Experimental Results ◽  
Bending Properties ◽  
Element Analysis ◽  
Bending Performance ◽  
Continuous Beams

The article makes a simulation on the external CFRP prestressed reinforced concrete continuous beams with ANSYS, the beams which had made analysis by Kiang Hwee Tan and Robert A. Tjandra. There is a little difference between the results of simulation and experimental results. It shows the reliability of simulation on concrete continuous beams with ANSYS. Then it makes a finite element analysis about parameters of the bending properties of continuous beams. It could provide relevant information about bending performance of concrete continuous beams with external CFRP prestressed tendons.

Ultimate strength of three reinforced concrete highway bridges

1985 ◽  
Vol 12 (1) ◽  
pp. 63-72 ◽  
Author(s):  
I. G. Buckle ◽  
A. R. Dickson ◽  
M. H. Phillips
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Ultimate Strength ◽  
Ultimate Load ◽  
Load Capacity ◽  
Highway Bridges ◽  
Nonlinear Finite Element ◽  
Membrane Action ◽  
Element Analysis ◽  
Compressive Membrane Action

The destructive testing of three reinforced concrete highway bridges, recently made redundant by road realignment, is summarized. The procedure used to test the bridges to ultimate conditions is described and load capacities of about 20 times class 1 axle loads are reported for all structures. Analyses based on conventional ultimate strength theory can account for only two-thirds of these ultimate loads and then only if second order effects are included. A nonlinear finite element computer program has been developed and used to analyze one of these structures. Excellent prediction of the ultimate load is made by the program. It is therefore suggested that compressive membrane action, which is automatically modelled in the finite element solution, plays a significant role in the enhancement of load capacity.The paper concludes that a more sophisticated approach to the assessment of bridge load capacity is necessary if realistic estimates of actual strength are to be made. Limited experience with a nonlinear finite element program suggests one such approach. If used with care, some relief to the bridge replacement program can be expected. Key words: highway bridges, ultimate load capacity, finite element analysis, reinforced concrete, field testing, compressive membrane action.

scholarly journals Nonlinear finite-element analysis of embedment behavior of metal washer in bolted timber joints

2021 ◽  
Vol 67 (1) ◽  
Author(s):  
Masaki Teranishi ◽  
Doppo Matsubara ◽  
Yoshiaki Wakashima ◽  
Hidemaru Shimizu ◽  
Akihisa Kitamori
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Nonlinear Finite Element Analysis ◽  
Quantitative Agreement ◽  
Nonlinear Finite Element ◽  
Experimental Results ◽  
Bolted Joints ◽  
Initial Stiffness ◽  
Element Analysis ◽  
Yield Load

AbstractThe pretensioning force in bolted joints enhances the lateral strength of the connections, and causes the embedment of metal washers into wood. Despite the significance of embedment behavior in the design of bolted joints, its mechanism has yet to be fully understood. In this study, the mechanism of the embedment of a metal washer into wood along the radial direction was examined through three-dimensional nonlinear finite-element analysis (FEA). The FEA results were validated by comparing them with experimental results for nine metal washers with different geometries. Moreover, the sensitivity of embedment stiffness and yield load to wooden material constants was also investigated. The numerical results showed good qualitative and quantitative agreement with the experimental results. In addition, the embedment stiffness and yield load were sensitive to the yield stress and Young’s modulus of wood in the radial and tangential directions. The determination of these mechanical properties of wood through material testing is important for reproducing the behavior of the embedment of a metal washer into wood and accurately estimating the yield load and initial stiffness using FEA. This will play a significant role in designing bolted joints.

Finite Element Analysis for Static Cushion Performance of (EPE) and Honeycomb Paperboard Combination

2018 ◽  
Vol 777 ◽  
pp. 457-461
Author(s):  
Ya Jun Wang ◽  
Xiao Ping Fan ◽  
Hong Xiang ◽  
Fang Ying Wu ◽  
Zhuo Jiang
Keyword(s):  
Finite Element Method ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Yield Stress ◽  
Experimental Results ◽  
Deformation Characteristics ◽  
Element Analysis ◽  
Static Compression ◽  
Good Agreement

The solid modeling method for Expandable Polyethylene (EPE) and honeycomb paperboard combination structure was studied. The static compression of the structure was simulated by finite element method (FEM). The effect of the thickness of the EPE on the structure was analyzed, and the stress distribution and deformation characteristics were obtained. The results showed that the thickness of EPE had no significant effect on the yield stress of the structure, but the corresponding strain was increased with the increase of the thickness of EPE. The EPE could protect honeycomb paperboard from damage. The results of finite element analysis were in good agreement with the experimental results.

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