Simple Three-Coefficient Equation for Temperature-Dependent Mechanical Properties of Cold-Formed Steels
Publication: Journal of Structural Engineering
Volume 147, Issue 4
Abstract
The objective of this paper is to propose relationships for the reduction in mechanical properties of cold-formed steels at elevated temperature. Predicting the degradation of strength and modulus of cold-formed steels with temperature is critical to enable fire design of cold-formed steel members. Here, the properties of elastic modulus, 0.2% proof stress, 2% stress, and ultimate stress are studied for grades up to and including 550 MPa. Data are collected from the literature as well as from recent tests conducted by the authors at Johns Hopkins University. Steady-state and transient test results in the range of 20°C–1,000°C are analyzed. Retention factors are then proposed for the mechanical properties adopting a standardized format developed through committee work with the American Iron and Steel Institute.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
References
AISI (American Iron and Steel Institute). 2015. North American standard for cold-formed steel structural framing. Washington, DC: AISI.
Ariyanayagam, A. D., and M. Mahendran. 2014. “Numerical modelling of load bearing light gauge steel frame wall systems exposed to realistic design fires.” Thin-Walled Struct. 78 (May): 148–170. https://doi.org/10.1016/j.tws.2014.01.003.
Arrais, F., N. Lopes, and P. V. Real. 2016. “Behaviour and resistance of cold-formed steel beams with lipped channel sections under fire conditions.” J. Struct. Fire Eng. 7 (4): 365–387. https://doi.org/10.1108/JSFE-12-2016-025.
AS (Standards Australia). 2011. Continuous hot-dip metallic coated steel sheet and strip—Coatings of zinc and zinc alloyed with aluminium and magnesium. AS 1397-2011. Sydney, Australia: AS.
ASTM. 2009. Standard test methods for elevated temperature tension tests of metallic materials. ASTM E21. West Conshohocken, PA: ASTM.
ASTM. 2015a. Standard specification for steel sheet, carbon, metallic- and nonmetallic-coated for cold-formed framing members. ASTM A1003/A1003M-15. West Conshohocken, PA: ASTM.
ASTM. 2015b. Standard specification for steel sheet, zinc-coated (galvanized) or zinc-iron alloy-coated (galvannealed) by the hot-dip process. ASTM A653/A653M-20. West Conshohocken, PA: ASTM.
ASTM. 2016. Standard test methods for tension testing of metallic materials. ASTM E8/E8M-16. West Conshohocken, PA: ASTM.
Baleshan, B., and M. Mahendran. 2016. “Numerical study of high strength LSF floor systems in fire.” Thin-Walled Struct. 101 (Apr): 85–99. https://doi.org/10.1016/j.tws.2015.12.018.
Batista Abreu, J. C. 2015. “Fire performance of cold-formed steel walls.” Ph.D. dissertation, Dept. of Civil Engineering, Johns Hopkins Univ.
CEN (European Committee for Standardization). 2005. Eurocode 3: Design of steel structures. Part 1–2: General rules—Structural fire design. EN 1993-1-2. Brussels, Belgium: CEN.
CEN (European Committee for Standardization). 2007. Eurocode 3—Design of steel structures. Part 1–2: General rules—Structural fire design—National Annex to NF EN 1993-1-2:2005. NF EN 1993-1-2/NA. Brussels, Belgium: CEN.
Chen, J., and B. Young. 2007. “Experimental investigation of cold-formed steel material at elevated temperatures.” Thin-Walled Struct. 45 (1): 96–110. https://doi.org/10.1016/j.tws.2006.11.003.
Couto, C., P. V. Real, N. Lopes, and B. Zhao. 2014. “Effective width method to account for the local buckling of steel thin plates at elevated temperatures.” Thin-Walled Struct. 84 (Nov): 134–149. https://doi.org/10.1016/j.tws.2014.06.003.
Craveiro, H. D., J. P. C. Rodrigues, A. Santiago, and L. Laím. 2016. “Review of the high temperature mechanical and thermal properties of the steels used in cold formed steel structures—The case of the S280 Gd+Z steel.” Thin-Walled Struct. 98 (Jan): 154–168. https://doi.org/10.1016/j.tws.2015.06.002.
Hancock, G. 2016. “Cold-formed steel structures: Research review 2013–2014.” Adv. Struct. Eng. 19 (3): 393–408. https://doi.org/10.1177/1369433216630145.
Imran, M., M. Mahendran, and P. Keerthan. 2018. “Mechanical properties of cold-formed steel tubular sections at elevated temperatures.” J. Constr. Steel Res. 143 (Apr): 131–147. https://doi.org/10.1016/j.jcsr.2017.12.003.
Kankanamge, N. D., and M. Mahendran. 2011. “Mechanical properties of cold-formed steels at elevated temperatures.” Thin-Walled Struct. 49 (1): 26–44. https://doi.org/10.1016/j.tws.2010.08.004.
Laím, L., and J. P. C. Rodrigues. 2018. “Fire design methodologies for cold-formed steel beams made with open and closed cross-sections.” Eng. Struct. 171 (Sep): 759–778. https://doi.org/10.1016/j.engstruct.2018.06.030.
Landesmann, A., F. C. M. D. Silva, and E. D. M. Batista. 2014. “Experimental investigation of the mechanical properties of ZAR-345 cold-formed steel at elevated temperatures.” Mater. Res. 17 (4): 1082–1091. https://doi.org/10.1590/1516-1439.297014.
Lee, J. H., M. Mahendran, and P. Makelainen. 2003. “Prediction of mechanical properties of light gauge steels at elevated temperatures.” J. Constr. Steel Res. 59 (12): 1517–1532. https://doi.org/10.1016/S0143-974X(03)00087-7.
Li, H. T., and B. Young. 2017. “Material properties of cold-formed high strength steel at elevated temperatures.” Thin-Walled Struct. 115 (Jun): 289–299. https://doi.org/10.1016/j.tws.2017.02.019.
McCann, F., L. Gardner, and S. Kirk. 2015. “Elevated temperature material properties of cold-formed steel hollow sections.” Thin-Walled Struct. 90 (May): 84–94. https://doi.org/10.1016/j.tws.2015.01.007.
Outinen, J., and P. Mäkeläinen. 2004. “Mechanical properties of structural steel at elevated temperatures and after cooling down.” Fire Mater. 28 (24): 237–251. https://doi.org/10.1002/fam.849.
Ranawaka, T., and M. Mahendran. 2009. “Experimental study of the mechanical properties of light gauge cold-formed steels at elevated temperatures.” Fire Saf. J. 44 (2): 219–229. https://doi.org/10.1016/j.firesaf.2008.06.006.
Rokilan, M., and M. Mahendran. 2019. “Elevated temperature mechanical properties of cold-rolled steel sheets and cold-formed steel sections.” J. Constr. Steel Res. 167 (Apr): 105851. https://doi.org/10.1016/j.jcsr.2019.105851.
Seif, M., J. Main, J. Weigand, F. Sadek, L. Choe, C. Zhang, J. Gross, W. Luecke, and D. McColskey. 2016. Temperature-dependent material modeling for structural steels: Formulation and application. Gaithersburg, MD: US Dept. of Commerce, National Institute of Standards and Technology.
Shakil, S., W. Lu, and J. Puttonen. 2020. “Experimental studies on mechanical properties of S700 MC steel at elevated temperatures.” Fire Saf. J. 116 (Sep): 103157. https://doi.org/10.1016/j.firesaf.2020.103157.
Standards Australia. 2005. Cold-formed steel structures. AS/NZS 4600. Sydney, Australia: Standards Australia.
Yan, X., Y. Xia, H. B. Blum, and T. Gernay. 2020. “Elevated temperature material properties of advanced high strength steel alloys.” J. Constr. Steel Res. 174 (Nov): 106299. https://doi.org/10.1016/j.jcsr.2020.106299.
Ye, J., and W. Chen. 2012. “Elevated temperature material degradation of cold-formed steels under steady- and transient-state conditions.” J. Mater. Civ. Eng. 25 (8): 947–957. https://doi.org/10.1061/(ASCE)MT.1943-5533.0000640.
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Published In
Journal of Structural Engineering
Volume 147 • Issue 4 • April 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Apr 28, 2020
Accepted: Dec 11, 2020
Published online: Feb 10, 2021
Published in print: Apr 1, 2021
Discussion open until: Jul 10, 2021
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