Nonlinear behaviour of built-up cold-formed steel section battened columns

Dabaon, Mohamed; Ellobody, Ehab; Ramzy, Khaled

doi:10.1016/j.jcsr.2015.03.007

Cited by 69 publications

(23 citation statements)

References 23 publications

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“…Previous research shows various stress test results on CFS cross section, where web section strength is different from strength flange section and also lip section on cross section especially when receiving axial load. this statement is corroborated by the results of research which states that the effects of cold-formed processes and also the effect of imperfections on the installation, caused the behaviour of coldformed steel to give a non-uniform response [1,2]. So shifting the centre point of the load due to imperfection of the installation and the different strength on the part of section to make cold-formed profile cannot provide definite strength information.…”

Section: Introductionmentioning

confidence: 83%

“…The same is said by Dinis et. al [1][2] & Andre Dias [11] which examines the profile behaviour due to imperfection in the test sample. The unfortunate thing in this case is that the sample does not provide the correct information due to failure immediately which ends the total collapse on the profile when receiving initial pressure.…”

Section: Test Set-up and Test Proceduresmentioning

confidence: 99%

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Profile of cold-formed steel for compression member design a basic combination performance

Septiropa

Osman²,

Rahman³

et al. 2018

IJET

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Experiment previously showed several findings that the strength of cold-formed steel cross-section are not the same, where web strength and flange strength do not give the same response when receiving the axial load. This occurs not only because of a shift in the center point of the force due to deformation of the cross section, but also due to different strengths in cross-section, especially on the web section and flange section. To find out more details of this case, the experiment carried out the tensile test for mechanics property and compression test with an axial load to find which parts are weaknesses, then used as a reference in combining the profile. The compression test results showed significant increase in compression capability between single profile with double profile back to back (Dbb) or double profile flange to flange (Dff) with ratio 1: 2.24 and 1: 2.44 respectively. There is a non-linear increase in the value of Aeff and Ieff when becomes combine profiles (double, quadruple, hexatruple), so this can be the basis for increasing the combine profile capacity to be able to withstand larger loads. This experiment can show a basic performance of CFS, where are weak section parts of a profile can be used as a reference to put combine profile to increase compression capacity. With a numerical analysis approach compared to the experimental results, the combination of Cold-formed steel profile is established as a column for the low-rise building structure.

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Section: Introductionmentioning

confidence: 83%

Section: Test Set-up and Test Proceduresmentioning

confidence: 99%

Profile of cold-formed steel for compression member design a basic combination performance

Septiropa

Osman²,

Rahman³

et al. 2018

IJET

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show abstract

“…The method of solving tasks with the loads application to a building in the process of its construction or the method of up-building has demonstrated sufficient efficacy in the calculation of structures [21]. In solving these tasks it is necessary to take into account both the nonlinear behaviour of the material and the sequence of construction of buildings [22,23].…”

Section: Discussionmentioning

confidence: 99%

The Determination of Stress State of Structures Considering Sequence of Construction and Load Application

et al. 2016

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Abstract. For more accurate calculation of structure it is required to apply loads in the process of its construction instead of load application after structure has taken its final form. This action is necessary in order to observe changes in the stress-strain state of the structure under study. This circumstance is important for the massive hydraulic structures, such as hydroelectric dams. It is required to determine tensions, deformations and displacements in solving the building-up tasks. It is necessary to consider the problem for constructions of linear and nonlinear materials and check the principle of superposition on which the method of solving nonlinear problems is based. Also it is necessary to consider the solution of finite element schemes with the help of various iterative methods, such as the method of additional loads and the method of variable.

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“…Since a cold-formed technology has become popular in steel constructions, many companies patented proprietary element shapes. Experimental laboratory tests of some cold-formed elements are presented in [1][2][3][4][5]. The authors have chosen a cross-section shape of a built-up thin-walled column designed and implemented by an international steel structures manufacturer.…”

Section: Element Descriptionmentioning

confidence: 99%

Influence of nonlinearities on the efficiency and accuracy of FEM calculations on the example of a steel build-up thin-walled column

Deniziak

Winkelmann

2018

MATEC Web Conf.

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Due to the increase of computing capabilities of standard processing units, it is possible to perform complex analyses, considering a number of nonlinearities, such as geometric, material and boundary (contact) even on personal computers. In the paper, the authors have analysed the efficiency and accuracy of standard PC’s FEM calculations performed in Abaqus CAE 2017 software on the example of a critical load assessment of a thin-walled steel column element with selected nonlinearities. A cross-section shape of a built-up column used by an international steel structures manufacturer was adopted. The analysis serves to check the behavior of their product. Several types of FEM analysis, strictly based on the EN standard regulations were performed. In turn, the relation of computational time to the adopted analysis type was obtained. Moreover, the produced load values in different types of independent calculation were compared and analysed. A possible future development in the field, based mainly on full-scale experimental tests, was also highlighted.

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Nonlinear behaviour of built-up cold-formed steel section battened columns

Cited by 69 publications

References 23 publications

Profile of cold-formed steel for compression member design a basic combination performance

Profile of cold-formed steel for compression member design a basic combination performance

The Determination of Stress State of Structures Considering Sequence of Construction and Load Application

Influence of nonlinearities on the efficiency and accuracy of FEM calculations on the example of a steel build-up thin-walled column

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