Study on T-Section Aluminium Beam-Columns with Web in Compression

2011 ◽  
Vol 250-253 ◽  
pp. 1786-1789
Author(s):  
Zheng Zhang ◽  
Gui Yun Yan
Keyword(s):  
Finite Element ◽  
Numerical Methods ◽  
Finite Element Methods ◽  
Geometrical Nonlinearity ◽  
Initial Imperfection ◽  
Material Nonlinearity ◽  
Parameter Analysis ◽  
Beam Columns ◽  
Analysis Methods ◽  
The Web

Parameter analysis based on finite element methods was executed to study the in-plane stability capacity of extruded T-section aluminium beam-columns with the tip of the web in bigger compression. The analysis methods considered the effects of material nonlinearity, geometrical nonlinearity, and initial imperfection. The comparisons of calculate results of three kinds of T-sections of weak hardening alloy and strong hardening alloy between GB 50429, proposed formula and numerical methods were executed. And the analytical results show that GB 50429 is safe and suitable, and the modification formula based on GB 50429 is also safe enough and more exact than the former.

An analytical solution to the problem of seepage into counterfort drains

1984 ◽  
Vol 21 (4) ◽  
pp. 657-662 ◽  
Author(s):  
Edward Nicholas Bromhead
Keyword(s):  
Finite Element ◽  
Numerical Methods ◽  
Analytical Solution ◽  
Finite Element Methods ◽  
Theoretical Approach ◽  
Small Study ◽  
Full Thickness ◽  
Slope Stabilization ◽  
Design Chart ◽  
And Performance

Recently, J. N. Hutchinson has collected data on the design and performance of trench and counterfort drains. This article presents an analytical solution to one of these cases, that of seepage into counterfort drains which penetrate the full thickness of a layer of soil, down to the impermeable base on which it rests. The soil is assumed to have uniform permeability.The findings of a small study, by Hutchinson, of seepage patterns to such drains, made with the use of finite element methods, are found to be validated by the theoretical approach in this article. This solution also provides a convenient benchmark against which approximate numerical methods can be assessed.Finally, a design chart based on the theory is presented, with examples of its application to the design of counterfort drain installations for slope stabilization.

scholarly journals Finite element modelling of rectangular concrete-filled steel tube stub columns incorporating high strength and ultra-high strength materials under concentric axial compression

2021 ◽  
Vol 15 (4) ◽  
pp. 74-87
Author(s):  
Thai Son ◽  
Cuong Ngo-Huu ◽  
Dinh Van Thuat
Keyword(s):  
Finite Element ◽  
Axial Compression ◽  
Geometrical Nonlinearity ◽  
Initial Imperfection ◽  
High Strength ◽  
Element Model ◽  
Steel Tube ◽  
Stress Strain Relation ◽  
Proposed Model ◽  
Stub Columns

This study presents a unified approach to simulate the behavior of rectangular concrete-filled steel stub columns incorporating high strength and ultra-high strength materials subjected to concentric axial compression. The finite element model is developed based on Abaqus software, which is capable of accounting for geometrical nonlinearity, material plasticity, and interaction between multi-physics. The proposed model incorporates the influences of residual stress for welded-box steel sections and initial imperfection. A novel stress-strain relation of confined concrete is proposed to account for the composite action, which might increase the strength and ductility of infilled concrete under multi-axial compressive conditions. Various verification examples are conducted with wide ranges of geometrical and material properties. The simulation results show that the proposed model can accurately predict the ultimate strength, load-deformation relations, and failure mode of the experimental specimens.

Finite Element Analysis on Hysteretic Behavior of Aluminium Columns under Cyclic Loading

2014 ◽  
Vol 1049-1050 ◽  
pp. 264-267
Author(s):  
Zheng Zhang ◽  
Yong Qian Zheng ◽  
Xue Chao Chen ◽  
Zhi Bin Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cyclic Loading ◽  
Geometrical Nonlinearity ◽  
Initial Imperfection ◽  
Hysteretic Behavior ◽  
Constitutive Relationship ◽  
Low Carbon ◽  
Element Analysis ◽  
Steel Columns

The mechanical properties of axial compression aluminium members under cyclic loading were studied and compared with those of steel columns. In order to proceed to theoretical study on hysteretic behavior of aluminium columns, a method by finite element analysis was proposed. The method was based on FEA software, ANSYS. The analysis methods considered the effects of material nonlinearity, geometrical nonlinearity and initial imperfection. On this basis, hysteretic curves, reversal skeleton curves and stiffness degradation curves of 6061-T6 aluminium columns, 6061-T4 aluminium columns and Q235 steel columns under axial cyclic loading were obtained and compared. Results show that the hysteretic behavior of the aluminium columns is similar with the low carbon steel columns and is significantly influenced by constitutive relationship.

scholarly journals Numerical behavior of singular two-point boundary value problems in a comparative way

2017 ◽  
Vol 7 (3) ◽  
pp. 288-292
Author(s):  
Selmahan Selim ◽  
Gözde Elver ◽  
Murat Sari
Keyword(s):  
Finite Element ◽  
Numerical Methods ◽  
Boundary Value Problems ◽  
Finite Element Methods ◽  
Model Equation ◽  
Boundary Value ◽  
Point Boundary ◽  
Numerical Techniques ◽  
Physical Processes ◽  
Advantages And Disadvantages

This article concentrates on discovering numerical behavior of the singular two-point boundary value problems through various numerical techniques. This is carried out in a comparative way by mainly using differential quadrature and finite element methods. Also a discussion has been done by means of advantages and disadvantages of the numerical methods of interest.To properly understand the behavior of the physical processes represented by the model equation, the calculated solutions have been discussed in detail. 

scholarly journals Mechanical analysis of an auxiliary table with composite structure

2021 ◽  
Vol 11 (1) ◽  
pp. 27-33
Author(s):  
Dániel Kiss ◽  
Attila Szilágyi
Keyword(s):  
Finite Element ◽  
Numerical Methods ◽  
Finite Element Methods ◽  
Composite Structure ◽  
Mechanical Analysis ◽  
Auxiliary Table ◽  
The Given

This paper gives a brief summary on the application on of finite element methods during the design of a component. The solutions of mechanical and thermal problems are demonstrated on the given component. Among the several numerical methods the paper focuses on the FEM. During the article we present the problems, then define mechanical simulations for the possible solution that was designed and the evaluation of the results.

Equilibrium Profile of Modern Belted Radial Ply Tires: Its Determination and Performance Benefits

2013 ◽  
Vol 41 (2) ◽  
pp. 127-151
Author(s):  
Rudolf F. Bauer
Keyword(s):  
Finite Element ◽  
Aspect Ratio ◽  
Finite Element Methods ◽  
Mathematical Analysis ◽  
Internal Stresses ◽  
Stress Concentrations ◽  
Equilibrium Profiles ◽  
Equilibrium Profile ◽  
And Performance ◽  
Beneficial Property

ABSTRACT The benefits of a tire's equilibrium profile have been suggested by several authors in the published literature, and mathematical procedures were developed that represented well the behavior of bias ply tires. However, for modern belted radial ply tires, and particularly those with a lower aspect ratio, the tire constructions are much more complicated and pose new problems for a mathematical analysis. Solutions to these problems are presented in this paper, and for a modern radial touring tire the equilibrium profile was calculated together with the mold profile to produce such tires. Some construction modifications were then applied to these tires to render their profiles “nonequilibrium.” Finite element methods were used to analyze for stress concentrations and deformations within all tires that did or did not conform to equilibrium profiles. Finally, tires were built and tested to verify the predictions of these analyses. From the analysis of internal stresses and deformations on inflation and loading and from the actual tire tests, the superior durability of tires with an equilibrium profile was established, and hence it is concluded that an equilibrium profile is a beneficial property of modern belted radial ply tires.

Finite element methods for internal flow calculations

1983 ◽  
Author(s):  
W. HABASHI ◽  
M. HAFEZ ◽  
P. KOTIUGA
Keyword(s):  
Finite Element ◽  
Finite Element Methods ◽  
Internal Flow
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