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Elevated-temperature Material Properties and Constitutive Model of Fire Resistant Steel for Thermo-mechanical Simulation
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내화구조 시뮬레이션을 위한 FR355 내화강의 고온특성 및 구성모델

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Type
Academic journal
Author
Cho, Yong-Hyun (한국건설기술연구원) Park, Min-Jae (부경대학교) Ahn, Jae-Kwon (한국건설기술연구원) Ryu, Eun-Mi (한국건설기술연구원)
Journal
Korean Society Of Steel Construction Journal of Korean Society of Steel Construction Vol.36 No.1 KCI Accredited Journals
Published
2024.2
Pages
91 - 102 (12page)
DOI
10.7781/kjoss.2024.36.1.091

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Elevated-temperature Material Properties and Constitutive Model of Fire Resistant Steel for Thermo-mechanical Simulation
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Elevated-temperature material properties of fire resistant steel reported in the literature have an observable scatter. They differ from material model codified in the existing design codes that are mainly based on the results of mild carbon steel. This paper investigates the elevated-temperature material properties of FR355 through steady-state tensile tests. Ductile fracture in steel structural components in a fire has been widely observed. However, its inclusion in numerical simulation has been limited due to lack of experimental data on fracture response and true stress-strain data. This paper also addresses an integrated experimental-FE analysis to calibrate ductile fracture parameters and to determine full-range true stress-strain curves. The developed material constitutive model and ductile fracture model were validated through extensive simulations of tensile coupons at elevated temperatures.
#Fire resistant steel #Elevated-temperature material properties #Ductile fracture #Constitutive model #Fire #내화강 #고온 기계적 특성 #연성파괴 #재료구성방정식 #화재

Contents

Abstract
1. 서론
2. 연구의 중요성
3. 고온 인장재료시험
4. 장범위 진응력-진변형률 선도
5. 결론
참고문헌(References)
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