Interaction between local and distortional buckling modes in cold-formed steel members subjected to pure bending

2011 ◽  
Vol 42 (4) ◽  
pp. 279
Author(s):  
Jing Yin ◽  
Xiao Xiong Zha ◽  
Long Yuan Li
Keyword(s):  
Distortional Buckling ◽  
Pure Bending ◽  
Buckling Modes ◽  
Steel Members ◽  
Cold Formed Steel

Simulation of Cold-Formed Steel Beams in Global and Distortional Buckling

2014 ◽  
Vol 633-634 ◽  
pp. 1037-1041 ◽  
Author(s):  
Nikolay Vatin ◽  
Aleksei Sinelnikov ◽  
Marsel Garifullin ◽  
Darya Trubina
Keyword(s):  
Fe Simulation ◽  
Critical Force ◽  
Steel Beams ◽  
Elastic Buckling ◽  
Distortional Buckling ◽  
Pure Bending ◽  
Buckling Modes ◽  
New Type ◽  
Cold Formed Steel ◽  
Computing Simulation

This article provides the numerical elastic buckling analysis of simply supported cold-formed lipped channels subjected to pure bending. A methodology for computing simulation of a new type of thin-walled thermo-profile (reticular-stretched) is developed. For flexural elements buckling modes and values of critical force are calculated. FE simulation evaluates the influence of web height and span on the critical load and buckling modes for cold formed beams of different lengths.

scholarly journals Behaviour of Cold Formed Built - Up Steel Compression Member

2019 ◽  
Vol 8 (4) ◽  
pp. 8409-8413
Keyword(s):  
Slenderness Ratio ◽  
Distortional Buckling ◽  
Cross Sectional ◽  
Buckling Modes ◽  
Steel Columns ◽  
Steel Members ◽  
Load Carrying ◽  
Cold Formed Steel ◽  
Ultimate Load Carrying Capacity ◽  
Sectional Shape

The use of cold-formed thin-walled steel structural members has increased in recent years. Especially, Cold-formed steel columns are widely used in the construction industry due to their lightweight, easy installation, erection and economy. The strength and efficiency of cold-formed steel profiles depends on the cross-sectional shape, which controls the three fundamental buckling modes: local, distortional and global. As most of their sections are open with only one symmetrical axis, they would likely fail by twisting and interacted with the other buckling modes such as local and distortional buckling. In order to improve the ultimate strength of columns, a built-up column section with distinct shape was selected from the detailed study of Literatures and three specimens of thickness 1.6mm were fabricated with different lengths 500mm, 600mm and 700mm. Consequently, buckling behaviour of built up steel members was investigated theoretically with Direct Strength Method (with the help of CuFSM) as well as experimentally and the results were compared with the buckling modes obtained numerically using ANSYS software and it is found that the ultimate load carrying capacity of the column increases with the decrease of slenderness ratio and finally a new innovative and economical column element was presented.

A Study on the Behaviour of Cold Formed Built - Up Steel Compression Member

2019 ◽  
Vol 1 (6) ◽  
pp. 225-234
Author(s):  
Thiyagu K ◽  
Elanchezhiyan R ◽  
Kanaka P ◽  
Ganamanikarnika N
Keyword(s):  
Slenderness Ratio ◽  
Distortional Buckling ◽  
Cross Sectional ◽  
Buckling Modes ◽  
Steel Columns ◽  
Steel Members ◽  
Load Carrying ◽  
Cold Formed Steel ◽  
Ultimate Load Carrying Capacity ◽  
Sectional Shape

The use of cold-formed thin-walled steel structural members has increased in recent years. Especially, Cold-formed steel columns are widely used in the construction industry due to their lightweight, easy installation, erection and economy. The strength and efficiency of cold-formed steel profiles depends on the cross-sectional shape, which controls the three fundamental buckling modes: local, distortional and global. As most of their sections are open with only one symmetrical axis, they would likely fail by twisting and interacted with the other buckling modes such as local and distortional buckling. In order to improve the ultimate strength of columns, a built-up column section with distinct shape was selected from the detailed study of Literatures and three specimens of thickness 1.6mm were fabricated with different lengths 500mm, 600mm and 700mm. Consequently, buckling behaviour of built up steel members was investigated theoretically with Direct Strength Method (with the help of CuFSM) as well as experimentally and the results were compared with the buckling modes obtained numerically using ANSYS software and it is found that the ultimate load carrying capacity of the column increases with the decrease of slenderness ratio and finally a new innovative and economical column element was presented.

Local Buckling of Cold-Formed Steel Members with Edge Stiffened Holes

2015 ◽  
Vol 725-726 ◽  
pp. 697-702 ◽  
Author(s):  
Marsel Garifullin ◽  
Darya Trubina ◽  
Nikolai Vatin
Keyword(s):  
Local Buckling ◽  
Buckling Analysis ◽  
Numerical Results ◽  
Building Industry ◽  
Elastic Buckling ◽  
Distortional Buckling ◽  
Steel Members ◽  
Cold Formed Steel ◽  
New Generation

Cold formed steel members with edge stiffened holes are a new generation of cold formed members recently developed by the building industry. Very little research has been performed on such sections to determine their local and distortional buckling capacity. This article provides the numerical results of elastic local buckling analysis of cold-formed lipped channels with edge stiffened holes. For flexural elements values of critical buckling moments are calculated and the influence of hole spacing and diameter on elastic buckling capacity is determined.

Review: Interactive behaviour, failure and DSM design of cold-formed steel members prone to distortional buckling

2018 ◽  
Vol 128 ◽  
pp. 12-42 ◽  
Author(s):  
Dinar Camotim ◽  
Pedro B. Dinis ◽  
André D. Martins ◽  
Ben Young
Keyword(s):  
Distortional Buckling ◽  
Steel Members ◽  
Cold Formed Steel ◽  
Interactive Behaviour
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