Nonlinear Numerical Study of Cold-Formed Lipped Channel Beam-Columns

2014 ◽  
Vol 919-921 ◽  
pp. 183-187
Author(s):  
Ming Chen ◽  
Zhi Bin Feng ◽  
Zhou Zhou ◽  
Ya Long Wang ◽  
Qiang Zhang
Keyword(s):  
Finite Element ◽  
Numerical Study ◽  
Engineering Practice ◽  
Time Saving ◽  
Finite Element Program ◽  
Beam Columns ◽  
Load Carrying ◽  
Element Program ◽  
Channel Beam ◽  
Overall Buckling

Cold-formed lipped channel sections may fail in local, distortional and overall buckling under compression. With the development of computer technology, finite element analyses of these sections play increasing important roles in engineering practice for economic design and time-saving purpose. A kind of typical cold-formed lipped channel beam-column with varying load eccentricity was analyzed in this paper by using the finite element program of ANSYS to observe the buckling modes and load carrying capacities of the columns. All the results can be the reference for further studies.

An Experimental and Numerical Study to Analysis and Design of Sheet Hydroforming Process for an Automobile Fender Shell

2006 ◽  
Author(s):  
Mohammad Habibi Parsa ◽  
Payam Darbandi
Keyword(s):  
Finite Element ◽  
Numerical Study ◽  
Fluid Pressure ◽  
Finite Element Program ◽  
New Approach ◽  
Explicit Finite Element ◽  
Sheet Hydroforming ◽  
Analysis And Design ◽  
Hydroforming Process ◽  
Element Program

A new approach for manufacturing of shell fender is proposed and has been examined numerically and experimentally. The new suggested method is based on sheet hydroforming process, which has a lot of advantages over conventional deep drawing process. After defining the shape of initial blank using an inverse finite element program, numerical evaluation of the proposed sheet hydroforming process for production of shell fender has been carried out using an explicit finite element code considering fluid pressure, boundary conditions and tools. Then experimental evaluation has been carried out using down sized specimen and the results have been compared with results of previous simulations. It has been shown that there are similar trends between finite element and experimental results.

The Effect of Viscous and Hysteretic Damping on Rotor Stability

2000 ◽  
Author(s):  
Anthony M. Cerminaro ◽  
Frederick C. Nelson
Keyword(s):  
Finite Element ◽  
Numerical Study ◽  
Rotor System ◽  
Viscous Damping ◽  
Finite Element Program ◽  
Hysteretic Damping ◽  
Element Program

A rotordynamic finite element program has been modified to include internal viscous and hysteretic damping. A numerical study has been done on a rotor system with variable external damping to predict the effect of various amounts of internal viscous and hysteretic damping on rotor stability. Three cases are considered: (1) external viscous damping with internal viscous damping; (2) external hysteretic damping with internal hysteretic damping; and (3) external viscous damping with internal hysteretic damping.

Behavior of slab-stiffened culvert structures

1988 ◽  
Vol 15 (4) ◽  
pp. 726-731 ◽  
Author(s):  
David K. Playdon ◽  
Sidney H. Simmonds
Keyword(s):  
Finite Element ◽  
Soil Cover ◽  
Element Analysis ◽  
Finite Element Program ◽  
Load Carrying ◽  
Element Program ◽  
Adjacent Soil ◽  
Construction Loads ◽  
Flat Arch ◽  
Lateral Deformations

Large span elliptical culverts stiffened over the upper portion with a concrete cap can be used economically in highway construction at locations where only a small soil cover is possible. The behavior of such structures based on analyses obtained using the finite element program ADINA is presented. Primary variables are the thickness of the concrete cap and the depth of the soil. The effects of both the construction sequence and highway loading are considered.The load-carrying mechanism for the composite structure is dependent primarily on the amount of lateral deformation permitted by the adjacent soil and the thickness of the concrete cap. It is concluded that the behavior of the structure is that of a flat arch; but, with the lateral deformations likely to occur, the concrete section should be proportioned as a simple beam. Key words: concrete cap, culverts, construction loads, deformations, finite element analysis, stresses.

Numerical Solution and Parameter Analysis of Structure with Different Modulus

2010 ◽  
Vol 146-147 ◽  
pp. 724-728
Author(s):  
Wen Juan Yao ◽  
Bao Lin Hu ◽  
Ting Chen Fang
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Compression Modulus ◽  
Parameter Analysis ◽  
Engineering Practice ◽  
Structural Stress ◽  
Finite Element Program ◽  
Dimensionless Equation ◽  
Tension And Compression ◽  
Element Program

Materials with different modulus in tension and compression have a wide application in engineering practice, especially the composite materials developed in recent years, which have properties of different tension-compression modulus. To exploring the general features of mechanical properties of structures with different modulus, the dimensionless equation of finite element was deduced for structure with different modulus, and corresponding finite element program was developed .the stresses of the cantilever beam by program of the theory with different modulus. The impacts on member stresses resulted from the change of structure size, external load and the ratio of different modulus are compared and analyzed. Finally, we have drawn a conclusion that the property of different modulus of the material is very important to its stress, and have given out suggestions on the optimization of state of structural stress.

Distortional Buckling Control of Cold-Formed Lipped Channel Columns with Web Stiffener

2013 ◽  
Vol 838-841 ◽  
pp. 308-313
Author(s):  
Ming Chen ◽  
Zi Qi He ◽  
Zhan Ke Liu
Keyword(s):  
Experimental Study ◽  
Local Buckling ◽  
Distortional Buckling ◽  
Finite Element Program ◽  
Buckling Stress ◽  
Buckling Behavior ◽  
Load Carrying ◽  
Element Program ◽  
Varying Length ◽  
Overall Buckling

For cold-formed lipped channel columns with web stiffener, the distortional buckling stress may be lower than the local buckling and overall buckling stress, and thus it may control the design. A countermeasure to prevent the distortional buckling of such sections form happening by setting batten plates between two lips of the section was analyzed using the finite element program of ANSYS. Varying length and one way axial force eccentricity were concerned to observe the effect of the batten plates to the buckling behavior, load carrying capacities of the section in different cases. All the results can be the reference for later experimental study.

Finite Element Analysis of Cold-Formed Lipped Channel Columns with Web Stiffener

2013 ◽  
Vol 351-352 ◽  
pp. 264-269 ◽  
Author(s):  
Ming Chen ◽  
Zhan Ke Liu ◽  
Zi Qi He
Keyword(s):  
Finite Element Analysis ◽  
Experimental Study ◽  
Finite Element ◽  
Element Analysis ◽  
Finite Element Program ◽  
Buckling Modes ◽  
Channel Section ◽  
Load Carrying ◽  
Element Program ◽  
Varying Length

A total of 18 cold-formed lipped channel columns with web stiffener were analyzed by using the finite element program of ANSYS. Varying length and axial force eccentricity were concerned to observe the buckling modes, load carrying capacities and deformability of the channel section columns.All the results can be the reference for later experimental study.

Investigation on Opening Sizes and Influencing Factors of the Connection with Opening on Beam Web of Steel Frames

2014 ◽  
Vol 8 (1) ◽  
pp. 9-13
Author(s):  
Li Bin
Keyword(s):  
Finite Element ◽  
Theoretical Basis ◽  
Static Load ◽  
Plastic Hinge ◽  
Steel Frames ◽  
Engineering Practice ◽  
Static Loads ◽  
Finite Element Program ◽  
Element Program ◽  
The Web

The connection with opening on beam web is analyzed by Finite Element Program ABAQOUS. The optimal opening sizes and location are determined under the static loads. The factors to influence the formation of plastic hinge in beams and columns withstand static load are considered. Conclusions are drawn that the formation position is not only related with the web height h, but also with flange width b. The result provides us with a theoretical basis for specific engineering practice.

Computational Technique of the Sliding Interface in Numerical Simulations of 3D Penetration

2013 ◽  
Vol 477-478 ◽  
pp. 295-298
Author(s):  
Jun Yan ◽  
Feng Wang ◽  
Jian Hua Shen ◽  
Lin Sha
Keyword(s):  
Finite Element ◽  
Numerical Study ◽  
Computational Technique ◽  
Analog Computation ◽  
Finite Element Program ◽  
3D Finite Element ◽  
Aluminum Target ◽  
Sliding Interface ◽  
Element Program ◽  
Lagrange Finite Element

Based on the Lagrange finite element method, a simplified computational technique for sliding interface in oblique penetration is proposed in the paper. By applying the 3D finite element program developed on this technique to numerical analog computation of ogive-noded steel rod penetrating in the aluminum target, a result which is consistent with that of A.J.Piekutowskis experiment can be reached. Hence it proves the rationality and validity of the program and method discussed in this paper and that the method is useful in the numerical study of penetration and perforation.

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