Advances in Structural Engineering Research

Single Abstract

343597 - Structural stability of cold-formed steel channel members with functionally graded material as a thermal barrier during fire

Friday, April 20
3:30 PM - 5:00 PM
Location: 202CD

The objective of this paper is to investigate the structural stability of cold-formed steel (CFS) channel members using functionally graded material (FGM) as a thermal barrier during fire. Functionally graded materials are advanced materials characterized by non-homogenous material system with gradual gradation of material property within a given dimension. The composition of the FGM sheathing is defined by using the volume fractions of the constituents materials distributed across the thickness direction. The general rule of mixtures is used to predict the material property of the FGM. The 2-D heat transfer analysis is completed using ABAQUS to obtain the time-dependent temperature distribution on the CFS cross-sections. The stability analysis is performed to characterize how local, distortional, and global buckling of the members evolve under elevated temperature, in which mechanical properties are considered temperature dependent. Finally, the influence of sheathing material on the response of the members is compared with stability of same sections with gypsum board as a thermal barrier.
Key words: Cold-Formed Steel, Functionally graded materials, elevated temperature

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Yared Shifferaw

Assistant Professor
Drexel University

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Kermelos Woldeyes

PhD Student
Drexel University

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343597 - Structural stability of cold-formed steel channel members with functionally graded material as a thermal barrier during fire



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