F. E.-assisted design of the eaves bracket of a cold-formed steel portal frame

J.B.P. Lim, D.A. Nethercot

Research output: Contribution to journalArticle

Abstract

Non-linear large-displacement elasto-plastic finite element analyses are used to propose design recommendations for the eaves bracket of a cold-formed steel portal frame. Owing to the thinness of the sheet steel used for the brackets, such a structural design problem is not trivial as the brackets need to be designed against failure through buckling; without availability of the finite element method, expensive laboratory testing would therefore be required. In this paper, the finite element method is firstly used to predict the plastic moment capacity of the eaves bracket. Parametric studies are then used to propose design recommendations for the eaves bracket against two potential buckling modes of failure: (1) buckling of the stiffened free-edge into one-half sine wave, (2) local plate buckling of the exposed triangular bracket area. The results of full-scale laboratory tests on selected geometries of eaves bracket demonstrate that the proposed design recommendations are conservative. The use of the finite element method in this way exploits modern computational techniques for an otherwise difficult structural design problem.
LanguageEnglish
Pages411-428
Number of pages17
JournalSteel and Composite Structures
Volume2
Issue number6
Publication statusPublished - Dec 2002

Fingerprint

Steel
Buckling
Structural design
Finite element method
Plastics
Steel sheet
Availability
Geometry
Testing

Keywords

  • cold-formed steel
  • structural design
  • testing

Cite this

Lim, J.B.P. ; Nethercot, D.A. / F. E.-assisted design of the eaves bracket of a cold-formed steel portal frame. In: Steel and Composite Structures. 2002 ; Vol. 2, No. 6. pp. 411-428.
@article{a612420983054c2ab5a498a07f619440,
title = "F. E.-assisted design of the eaves bracket of a cold-formed steel portal frame",
abstract = "Non-linear large-displacement elasto-plastic finite element analyses are used to propose design recommendations for the eaves bracket of a cold-formed steel portal frame. Owing to the thinness of the sheet steel used for the brackets, such a structural design problem is not trivial as the brackets need to be designed against failure through buckling; without availability of the finite element method, expensive laboratory testing would therefore be required. In this paper, the finite element method is firstly used to predict the plastic moment capacity of the eaves bracket. Parametric studies are then used to propose design recommendations for the eaves bracket against two potential buckling modes of failure: (1) buckling of the stiffened free-edge into one-half sine wave, (2) local plate buckling of the exposed triangular bracket area. The results of full-scale laboratory tests on selected geometries of eaves bracket demonstrate that the proposed design recommendations are conservative. The use of the finite element method in this way exploits modern computational techniques for an otherwise difficult structural design problem.",
keywords = "cold-formed steel, structural design, testing",
author = "J.B.P. Lim and D.A. Nethercot",
year = "2002",
month = "12",
language = "English",
volume = "2",
pages = "411--428",
journal = "Steel and Composite Structures",
issn = "1229-9367",
publisher = "Techno Press",
number = "6",

}

F. E.-assisted design of the eaves bracket of a cold-formed steel portal frame. / Lim, J.B.P.; Nethercot, D.A.

In: Steel and Composite Structures, Vol. 2, No. 6, 12.2002, p. 411-428.

Research output: Contribution to journalArticle

TY - JOUR

T1 - F. E.-assisted design of the eaves bracket of a cold-formed steel portal frame

AU - Lim, J.B.P.

AU - Nethercot, D.A.

PY - 2002/12

Y1 - 2002/12

N2 - Non-linear large-displacement elasto-plastic finite element analyses are used to propose design recommendations for the eaves bracket of a cold-formed steel portal frame. Owing to the thinness of the sheet steel used for the brackets, such a structural design problem is not trivial as the brackets need to be designed against failure through buckling; without availability of the finite element method, expensive laboratory testing would therefore be required. In this paper, the finite element method is firstly used to predict the plastic moment capacity of the eaves bracket. Parametric studies are then used to propose design recommendations for the eaves bracket against two potential buckling modes of failure: (1) buckling of the stiffened free-edge into one-half sine wave, (2) local plate buckling of the exposed triangular bracket area. The results of full-scale laboratory tests on selected geometries of eaves bracket demonstrate that the proposed design recommendations are conservative. The use of the finite element method in this way exploits modern computational techniques for an otherwise difficult structural design problem.

AB - Non-linear large-displacement elasto-plastic finite element analyses are used to propose design recommendations for the eaves bracket of a cold-formed steel portal frame. Owing to the thinness of the sheet steel used for the brackets, such a structural design problem is not trivial as the brackets need to be designed against failure through buckling; without availability of the finite element method, expensive laboratory testing would therefore be required. In this paper, the finite element method is firstly used to predict the plastic moment capacity of the eaves bracket. Parametric studies are then used to propose design recommendations for the eaves bracket against two potential buckling modes of failure: (1) buckling of the stiffened free-edge into one-half sine wave, (2) local plate buckling of the exposed triangular bracket area. The results of full-scale laboratory tests on selected geometries of eaves bracket demonstrate that the proposed design recommendations are conservative. The use of the finite element method in this way exploits modern computational techniques for an otherwise difficult structural design problem.

KW - cold-formed steel

KW - structural design

KW - testing

UR - http://technopress.kaist.ac.kr/journal/container/sacs/sacs2_6_container.jsp?order=0

M3 - Article

VL - 2

SP - 411

EP - 428

JO - Steel and Composite Structures

T2 - Steel and Composite Structures

JF - Steel and Composite Structures

SN - 1229-9367

IS - 6

ER -