Mechanical properties of structural steel at elevated temperatures

Outinen, Jyri; Maekelaeinen, P

doi:10.1016/b978-008044017-0/50129-3

Cited by 17 publications

(32 citation statements)

References 1 publication

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“…Hence, their results were not used in this comparison. Outinen [4] provided reduction factors for 2 mm S350GD+Z (minimum yield strength of 350 MPa) steels, while Chen and Young [6] gave the factors for 1 mm G550 steels. Fig.…”

Section: Comparison Of Results With Available Research Resultsmentioning

confidence: 99%

“…In this study, the steady-state test method was used to determine the mechanical properties of light gauge cold-formed steels due to its simplicity and accurate data acquisition. Many other researchers have also used the steady-state test method for the same reasons [4,9]. Outinen [4] and Lee et al [5] carried out both steady-state and transient-state tests of cold-formed steels and showed that the difference between steady-state and transient-state test results was negligible.…”

Section: Test Methodsmentioning

confidence: 96%

“…However, Outinen's [4] research was limited to thicker (2 and 4 mm) and lower grade cold-formed steels while Chen and Young's [6] research was limited to 1 mm G500 and 1.9 mm G500 steels. Mecozzi and Zhao's [7] tests were undertaken on 0.6 mm S280 and 1.2 and 2.5 mm S350 steels (lower strength steels).…”

Section: Introductionmentioning

confidence: 98%

“…In order to address the lack of reliable mechanical property data at elevated temperatures, Outinen [4], Lee et al [5], Chen and Young [6] and Mecozzi and Zhao [7] undertook experimental research based on tensile coupon tests at elevated temperatures for cold-formed steels. However, Outinen's [4] research was limited to thicker (2 and 4 mm) and lower grade cold-formed steels while Chen and Young's [6] research was limited to 1 mm G500 and 1.9 mm G500 steels.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of the mechanical properties of light gauge cold-formed steels at elevated temperatures

Ranawaka

Mahendran

2009

Fire Safety Journal

123

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a b s t r a c tIn recent times, light gauge cold-formed steel sections have been used extensively as primary loadbearing structural members in many applications in the building industry. Fire safety design of structures using such sections has, therefore, become more important. Deterioration of mechanical properties of yield stress and elasticity modulus is considered the most important factor affecting the performance of steel structures in fires. Hence, there is a need to fully understand the mechanical properties of light gauge cold-formed steels at elevated temperatures. A research project based on experimental studies was, therefore, undertaken to investigate the deterioration of mechanical properties of light gauge cold-formed steels. Tensile coupon tests were undertaken to determine the mechanical properties of these steels made of both low-and high-strength steels and thicknesses of 0.60, 0.80 and 0.95 mm at temperatures ranging from 20 to 800 1C. Test results showed that the currently available reduction factors are unsafe to use in the fire safety design of cold-formed steel structures. Therefore, new predictive equations were developed for the mechanical properties of yield strength and elasticity modulus at elevated temperatures. This paper presents the details of the experimental study, and the results including the developed equations. It also includes details of a stress-strain model for light gauge cold-formed steels at elevated temperatures.

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Section: Comparison Of Results With Available Research Resultsmentioning

confidence: 99%

Section: Test Methodsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental study of the mechanical properties of light gauge cold-formed steels at elevated temperatures

Ranawaka

Mahendran

2009

Fire Safety Journal

123

View full text Add to dashboard Cite

show abstract

“…Due to its simplicity and accurate data acquisition, many other researchers have also used the steady-state test method [7][8][9][10] . Outinen 7 and Lee et al 9 carried out both steady-state and transient-state tests of cold-formed steels and showed that the difference between steady-state and transient-state test results was negligible.…”

Section: Methodsmentioning

confidence: 99%

Experimental investigation of the mechanical properties of ZAR-345 cold-formed steel at elevated temperatures

2014

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Considering the technical-scientific advances of recent years in the steel construction industry, there is a strong trend for the increasing use of cold-formed steel members in civil construction, due to several advantages such as cost and versatility of fabrication and erection. However, there is need for further study concerning the behavior of this type of steel when subjected to fire conditions. This work deals with the experimental characterization of cold-formed steel at high temperatures. It is recognized that the reduction factors of the mechanical properties applicable to hot-rolled steel members do not remain valid for cold-formed ones. In the case of the European Code, cold-formed members are treated in the same way of hot-rolled or welded thin-walled sections (i.e., class 4), the only differences in relation to the other (class 1, 2 or 3) consisting (i) the definition of the yield strength and (ii) the corresponding reduction factors (shown in Table E

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An improved flexural design procedure of steel plate I‐girders considering elastic lateral torsional buckling at elevated temperatures

Rasoulnia,

Broujerdian,

Ghamari

2024

Structural Design Tall Build

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In the present study, an improved design method is proposed for the flexural design of steel plate I‐girders at elevated temperatures. The proposed method accounts for two important phenomena accompanying the temperature increase in steel I‐girders: (1) alteration of the failure mode and (2) degradation of the material properties. The main strategy of the proposed procedure is to find the ambient‐temperature‐equivalent design parameters of steel I‐girders at elevated temperatures. The basic design relationships are adopted from the flexural design provisions of AISC 360‐16 and then modified to accommodate the elevated temperatures and instability conditions of I‐girders. To evaluate the accuracy and efficiency of the proposed method, a comprehensive finite element study is conducted using ABAQUS. To this aim, 54 numerical models of steel plate I‐girders with different cross‐section slenderness parameters were investigated. All the simulated I‐girders were prone to fail in elastic lateral‐torsional buckling mode at both ambient temperature and elevated temperatures. To corroborate the numerical modeling and analysis process at ambient and elevated temperatures, the results were verified against the available experimental data. Based on the results, the maximum absolute deviation of the ultimate flexural strength obtained from the proposed method from the finite element predictions was 9%.

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Mechanical properties of structural steel at elevated temperatures

Cited by 17 publications

References 1 publication

Experimental study of the mechanical properties of light gauge cold-formed steels at elevated temperatures

Experimental study of the mechanical properties of light gauge cold-formed steels at elevated temperatures

Experimental investigation of the mechanical properties of ZAR-345 cold-formed steel at elevated temperatures

An improved flexural design procedure of steel plate I‐girders considering elastic lateral torsional buckling at elevated temperatures

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