Structural Steel Tensile Fracture-Inception Prevention Limit State and Ductility Criteria

This paper proposes using the tensile-fracture-inception-prevention (TFIP) limit state and ductility parameter/criterion for a safer fracture-resistant design of the tension members of steel structures. Finite element (FE) analysis revealed that the tensile band localization strain (TBLS) is signifi...

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Bibliographic Details
Published in:Civil and environmental engineering (Berlin) 2020-06, Vol.16 (1), p.148-156
Main Authors: Adewole, Kazeem Kayode, de Dieu Mutabaruka, Jean
Format: Article
Language:English
Subjects:
Ductility parameter
Finite element
Fracture-resistant design criterion
Structural steel
Tensile band localization
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Summary:This paper proposes using the tensile-fracture-inception-prevention (TFIP) limit state and ductility parameter/criterion for a safer fracture-resistant design of the tension members of steel structures. Finite element (FE) analysis revealed that the tensile band localization strain (TBLS) is significantly lower than the fracture strain currently employed as the structural steel elongation-based ductility parameter/criterion. The TBLS is thus, a safer fracture-resistant parameter/criterion than the fracture strain. FE analysis reveals that the TBLS at the center of tension specimens (mid-thickness and mid-width) is lower, and is thus a safer TFIP elongation-based ductility criteria/parameter than the TBLS at the surface of tension specimens.
ISSN:1336-5835
2199-6512
DOI:10.2478/cee-2020-0015