A thermo-mechanical analysis of stainless steel structures in fire. (1st May 2020)

• Record Type: Journal Article
• Authors: Zhou, Mian; Cardoso, Rui P.R.; Bahai, Hamid; Usmani, Asif
• Is Part Of: Engineering structures. Volume 210(2020)
• Publication Date: 2020-05-01
• Subjects: Stainless steel structures in fire -- Combined isotropic-kinematic hardening material model -- Thermo-mechanical analysis -- OpenSEES; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2019.110091
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: Validation of a new combined isotropic kinematic hardening model. Temperature development within stainless steel I-sections. Performance of stainless steel structural systems in fire. Strain reversals of steel materials in fire. Abstract: A novel multi-dimensional combined isotropic-kinematic plasticity material model was recently developed by the authors for thermo-mechanical analysis of steels at elevated temperatures. In this paper, the capability of the new material model was further validated for transient loading conditions during heating and cooling using recent experimental data. The multi-dimensional material model was adapted to a 1D J2 plasticity model and implemented in the open source software OpenSEES for studying the structural performance of stainless steel beam and frame structures in fire using finite element analysis (FEA). This paper presents the findings of the studies, with a focus on the behavioural comparisons between the carbon steel and the stainless steel structures. Using the FEA method, the studies provided results that filled the research gap in understanding the global structural fire performance of stainless steel structural systems. The significant impact of stainless steels' high material non-linearity and high thermal expansion on their structural fire performance is highlighted.