Copyright © 2026 Authors retain the copyright of this article. This article is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

@article{187534,
        author = {Roopesh K M and Dr Sridhar R},
        title = {Thermal and distortional buckling analysis of z section on cold-formed steel member},
        journal = {International Journal of Innovative Research in Technology},
        year = {2025},
        volume = {12},
        number = {6},
        pages = {5590-5594},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=187534},
        abstract = {Cold-formed steel (CFS) sections are extensively used in light-weight structural applications due to their high strength-to-weight ratio and ease of fabrication. However, when subjected to elevated temperatures such as in fire conditions, their mechanical performance deteriorates significantly. This study investigates the thermal and distortional buckling behavior of Z-section members with and without lips under a uniform temperature field using ANSYS Workbench 2023 R1. Transient thermal and eigenvalue buckling analyses were performed to evaluate the temperature distribution, deformation patterns, and critical buckling temperatures for different member lengths (1 m, 1.5 m, and 2 m). The results show that temperature rise causes rapid stiffness reduction and that longer members exhibit lower critical buckling temperatures, indicating higher susceptibility to thermal instability. The Z-section with lip demonstrates improved resistance to thermal buckling compared to the section without a  lip, emphasizing the importance of stiffening elements in maintaining structural integrity under elevated temperature conditions.},
        keywords = {Cold-formed steel, distortional buckling, thermal analysis, critical buckling temperature, Z-section.},
        month = {November},
        }