Research on mechanical behavior of L-shaped multi-cell concrete-filled steel tubular stub columns under axial compression

2018 ◽  
Vol 22 (2) ◽  
pp. 427-443 ◽  
Author(s):  
Jiepeng Liu ◽  
Hua Song ◽  
Yuanlong Yang
Keyword(s):  
Finite Element ◽  
Compressive Strength ◽  
Bearing Capacity ◽  
Thickness Ratio ◽  
Steel Plates ◽  
Test Results ◽  
Finite Element Program ◽  
Element Program ◽  
Compressive Strength Of Concrete ◽  
Stub Columns

A total of 11 L-shaped multi-cell concrete-filled steel tubular stub columns were fabricated and researched in axial compression test. The key factors of width-to-thickness ratio D/ t of steel plates in column limb and prism compressive strength of concrete fck were investigated to obtain influence on failure mode, bearing capacity, and ductility of the specimens. The test results show that the constraint effect for concrete provided by multi-cell steel tube cannot be ignored. The ductility decreases with the increase of width-to-thickness ratio D/ t of steel plates in column limb. The bearing capacity increases and the ductility decreases with the increase in prism compressive strength of concrete fck. A finite element program to calculate concentric load–displacement curves of L-shaped multi-cell concrete-filled steel tubular stub columns was proposed and verified by the test results. A parametric analysis with the finite element program was carried out to study the influence of the steel ratio α, steel yield strength fy, prism compressive strength of concrete fck, and width-to-thickness ratio D/ t of steel plates in column limb on the stiffness, bearing capacity and ductility. Furthermore, the design method of bearing capacity was determined based on mainstream concrete-filled steel tubular codes.

Finite Element Analysis on the Bearing Capacity of Tube-Plate Joint with Different Width-Thickness Ratio

2012 ◽  
Vol 204-208 ◽  
pp. 1224-1228
Author(s):  
Jun Fen Yang ◽  
Yi Liang Peng ◽  
Xia Bing Wei ◽  
Jin Bo Cui
Keyword(s):  
Experimental Investigation ◽  
Finite Element ◽  
Bearing Capacity ◽  
Steel Tube ◽  
Thickness Ratio ◽  
Deformation Condition ◽  
Tube Plate ◽  
Element Analysis ◽  
Finite Element Program ◽  
Element Program

Tube-plate joint is a frequently-used joint type in steel-tube tower, but the theoretical analysis and experimental investigation on tube-plate joint are absent both at home and abroad. In this paper, the ANSYS finite element program was used to simulate the bearing capacity and deformation condition of tube-plate joint with 1/2-stiffening ring. Eight calculation models were designed, and the width-thickness ratio was changed by changing the width or thickness of stiffening ring. The results indicate that the influence of different width-thickness ratio on tube-plate joint bearing capability is significant. By increasing the width or increasing the thickness of stiffening rings to improve the bearing capacity of the joint is a very effective way.

scholarly journals PLASTIC CAPACITY OF BOLTED RHS FLANGE-PLATE JOINTS UNDER AXIAL TENSION

2016 ◽  
Vol 8 (3) ◽  
pp. 85-93
Author(s):  
Andrej Mudrov ◽  
Gintas Šaučiuvėnas ◽  
Antanas Sapalas ◽  
Ivar Talvik
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Load Bearing Capacity ◽  
Finite Element Program ◽  
Load Bearing ◽  
Axial Tension ◽  
Flange Thickness ◽  
Element Program ◽  
Two Sides ◽  
Ansys Workbench

This article considers the calculation of load-bearing capacity of flange-plate joints with bolts along two sides of rectangular hollow sections (RHS) under axial tension. It provides a review and comparison of various calculation methodologies for establishing the load-bearing capacity of RHS flange-plate joints, such as suggested in EN 1993-1-8:2005 and STR 2.05.08:2005 as well as those proposed in different countries and by other authors. Common design principles and derived results for load-bearing capacity of flange-plate joints have been analysed and compared. Following the numerical modelling, which has been done using ANSYS Workbench finite element program, the derived results for load-bearing capacity have been compared with analytical load-bearing capacity results for flange-plate joints of the same structure. The analysis has focused on one type of flange-plate joints with bolts – both preloaded and non-preloaded – along two opposite sides of the tube, with the flange thickness of 15 mm and 25 mm.

Analysis of Composite Beam with Different Web Openings

2014 ◽  
Vol 919-921 ◽  
pp. 15-18
Author(s):  
Wen Yuan Liao ◽  
Dong Hua Zhou ◽  
Long Qi Li
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Composite Beam ◽  
Composite Beams ◽  
Deformation Capacity ◽  
Finite Element Program ◽  
Web Openings ◽  
Web Opening ◽  
Element Program ◽  
Bearing Behavior

In order to investigate the bearing behavior of composite beam with different web openings. Six composite beams were analyzed by using the finite element program ANSYS and the shape of openings was different. The results show that the shape of opening has a significant influence on the bearing capacity and deformation capacity of composite beams with web openings. Because stress concentration is relatively small, the force performance of circular web opening is more reasonable and has the largest bearing capacity and deformation capacity.

scholarly journals The Bearing Capacity of Circular Footings in Sand: Comparison between Model Tests and Numerical Simulations Based on a Nonlinear Mohr Failure Envelope

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Sven Krabbenhoft ◽  
Johan Clausen ◽  
Lars Damkilde
Keyword(s):  
Bearing Capacity ◽  
Yield Criterion ◽  
Friction Angle ◽  
Triaxial Tests ◽  
Test Results ◽  
Finite Element Program ◽  
Model Foundation ◽  
Element Program ◽  
Confining Pressures ◽  
Good Agreement

This paper presents the results of a series of triaxial tests with dry sand at confining pressures varying from 1.5 kPa to 100 kPa at relative densities of 0.20, 0.59, and 0.84. The results, which are in reasonable accordance with an equation given by Bolton, show that the friction angle is strongly dependent on the stress level and on the basis of the test results, a nonlinear Mohr failure criterion has been proposed. This yield criterion has been implemented in a finite element program and an analysis of the bearing capacity of a circular shaped model foundation, diameter 100 mm, has been conducted. Comparisons have been made with results from 1g model scale tests with a foundation of similar size and a good agreement between numerical results and test results has been found.

Residual Compressive Strength of Dented FPSO Side Shell Panel

2014 ◽  
Author(s):  
Diogo do Amaral Amante ◽  
John Alex Chujutalli ◽  
Segen F. Estefen
Keyword(s):  
Finite Element ◽  
Compressive Strength ◽  
Compressive Load ◽  
Stiffened Panel ◽  
Finite Element Program ◽  
Stiffened Panels ◽  
Residual Compressive Strength ◽  
Element Program ◽  
Shell Panel ◽  
Dent Depth

This paper presents a non-linear finite element study to obtain the ultimate compressive strength of dented FPSO side stiffened panels. The finite element program ABAQUS was used to perform numerical analysis. The analysis is carried out in two steps. First the supply collision damage is imposed using the ABAQUS explicit code program. After the indentation, a compressive load is applied and then the panel residual compressive strength is obtained. A parametric study was accomplished to evaluate the influence of the dent depth on the stiffened panel strength. Damages occurring on the stiffener and between the stiffeners are compared.

An experimental and finite element study of the torsional behaviour of T-joints in automotive structures

2001 ◽  
Vol 215 (2) ◽  
pp. 231-240 ◽  
Author(s):  
M M K Lee ◽  
T Pine ◽  
T B Jones
Keyword(s):  
Finite Element ◽  
Laboratory Testing ◽  
Numerical Models ◽  
General Purpose ◽  
Test Results ◽  
T Joints ◽  
Finite Element Program ◽  
Automotive Components ◽  
Element Program ◽  
Torsional Properties

Single box sections and T-joints (two box sections joined together at right angles) are commonly used to represent automotive components, such as pillars and sills, in laboratory testing. In the work presented herein, the torsional properties of T-joints were determined both experimentally and numerically. A factorial-design test programme comparing adhesive-bonded and spot-welded T-joints was carried out. Numerical models, generated using a general-purpose finite element program and validated against the test results, were used to investigate further the behaviour of the connection between the two box sections in a T-joint. The joining technique and the joint eccentricity at the connection (the distance of the join from the vertical box section) were found to influence the torsional properties of T-joints. Finally, an automotive T-component was analysed to examine the applicability of the T-joint results to more complex components.

Experiment and ANSYS Finite Element Analysis on Concrete Filled Thin-Walled Steel Tube Joints

2013 ◽  
Vol 321-324 ◽  
pp. 234-238
Author(s):  
Li Jian
Keyword(s):  
Finite Element ◽  
Composite Beam ◽  
Steel Tube ◽  
Test Results ◽  
Element Analysis ◽  
Finite Element Program ◽  
Mechanics Performance ◽  
Calculation Results ◽  
Element Program ◽  
Thin Walled

The experiment on joints of concrete filled thin-walled steel tube and the composite beam is carried out in 8 specimens, and mechanics performance of all type joints is concluded in general. The test results indicate that each joint has higher bearing capacity and better ductility performance. Solid65 and Shell181 Elements of ANSYS finite element program are adopted to simulate concrete and thin-walled steel sheet of composite beams and columns. Calculation results in theories proved conformity with the test in primary.

scholarly journals Non-Linear Analysis of Plated T-Subjected to Negative Bending Moment

2013 ◽  
Vol 6 (1) ◽  
pp. 90-104
Author(s):  
Ahmed Abdullah Mansor
Keyword(s):  
Finite Element ◽  
Constitutive Models ◽  
Bending Moment ◽  
Plain Concrete ◽  
Steel Plates ◽  
Finite Element Models ◽  
Finite Element Program ◽  
Linear Behavior ◽  
Element Program ◽  
Negative Bending

This paper present a numerical analysis using ANSYS finite element program to simulate the reinforced concrete T- beams strengthened with external bonded steel plates when subjected to negative bending. Eight beams with length 2.0m and simply supported were modeled. Nonlinear materials behavior, as it relates to steel reinforcing bars and plain concrete, and linear behavior for plate is simulated using appropriate constitutive models. The results showed that the general behavior of the finite element models represented by the load-deflection curves at midspanappear well agreement with the test data from the previous researches. Also the crack patterns at the final loads from the finite models are discussed . The finite element models represented by this search can be used to carry out parametric study for the strengthening of plated T-beams.

Parallelization Development Method and Realization for a FEM Simulation Program

2013 ◽  
Vol 405-408 ◽  
pp. 3169-3172
Author(s):  
Lei Zhang ◽  
Guo Xin Zhang ◽  
Yi Liu ◽  
Hai Lin Pan
Keyword(s):  
Finite Element ◽  
Krylov Subspace ◽  
High Efficiency ◽  
Fem Simulation ◽  
Test Results ◽  
Element Analysis ◽  
Finite Element Program ◽  
Key Technology ◽  
Program Parallelization ◽  
Element Program

The parallel computation of equation sets solution are crucial for finite element analysis. The paper discussed the key technology of FEM parallelization and the parallelization strategy for the FEM program is given; and then discussed the Data structure of Aztec and how to call Aztec which consists of Krylov subspace iterative methods solvers and preconditioners; finally, the realization and testing of the Aztec-based finite element program parallelization was put forward. Test results show that there are high efficiency of this method which make the SapTis software more powerful, flexible and adaptable.

scholarly journals Finite element modeling of the effect of welding parameters on solidification cracking of Austenitic Stainless Steel 310

10.30544/222 ◽  
2016 ◽  
Vol 22 (4) ◽  
pp. 237-250
Author(s):  
Eslam Ranjbarnodeh ◽  
Yashar Gheisar Anzabi ◽  
Hamed Sabet
Keyword(s):  
Finite Element ◽  
Stainless Steel ◽  
Welding Current ◽  
Butt Joint ◽  
Steel Plates ◽  
Solidification Cracking ◽  
Welding Parameters ◽  
Finite Element Program ◽  
Transverse Tensile ◽  
Element Program

A transient thermo-mechanical model is employed to study the effects of welding parameters on the occurrence of solidification cracking. A finite element program, ANSYS, is employed to solve the thermal and mechanical equations while the different variables such as welding current, speed and sequence are considered in the simulation. The studied geometry was butt joint of two stainless steel plates with the thickness of 2 mm. Then, the samples were welded by TIG method without filler. To verify the numerical results, the model outputs were checked with the experimental observations and good agreement was observed. It was found that the increasing of welding current from 70 A to 100 A resulted in the increase in transverse tensile strain from 1.2 to 2.1 which can facilitate the occurrence of solidification cracking. Furthermore, the application of symmetric welding layout is an effective method to prevent solidification cracking.

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