The effects of end conditions on the load capacity of cold-formed steel column members of lipped channel cross-section with perforations subjected to compression loading

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Abstract

The effects of end boundary conditions on the compressive load carrying capacity of cold-formed lipped channel sections with perforations are investigated and discussed. Most structural cold-formed steel members are typically manufactured with perforations. These perforations are pre-cut to accommodate electrical, plumbing, and heating services and so on. Due to the size, shape, and position of perforations and end conditions, ultimate strength and elastic stiffness of a structural member can be varied. This paper describes the ultimate strength results obtained from numerical, experimental, and theoretical investigations for two types of end conditions namely, flat-end and fixed-fixed. The numerical results given have been obtained using the ANSYS FEA software package. An experimental study of the buckling behaviour of lipped channel columns of same cross-section, but with different perforation shapes and end conditions is reported and the findings from this are used to validate numerical results; good correlation was obtained both with ultimate strength and failure modes. Further, the study showed that there are similar ultimate load values for corresponding compression members under flat-end and fixed-fixed end conditions, and in general, more conservative estimates of design rule predictions: AISI Specification, British Standard - BS 5950 Part 5, and Eurocode 3.
Original languageEnglish
Pages129-142
Number of pages15
Publication statusPublished - 5 Nov 2014

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Plumbing
Structural members
Load limits
Software packages
Failure modes
Buckling
Stiffness
Boundary conditions
Specifications
Finite element method
Heating
Steel

Keywords

  • cold formed steel
  • FEA
  • load capacity
  • compression loading
  • perforations

Cite this

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title = "The effects of end conditions on the load capacity of cold-formed steel column members of lipped channel cross-section with perforations subjected to compression loading",
abstract = "The effects of end boundary conditions on the compressive load carrying capacity of cold-formed lipped channel sections with perforations are investigated and discussed. Most structural cold-formed steel members are typically manufactured with perforations. These perforations are pre-cut to accommodate electrical, plumbing, and heating services and so on. Due to the size, shape, and position of perforations and end conditions, ultimate strength and elastic stiffness of a structural member can be varied. This paper describes the ultimate strength results obtained from numerical, experimental, and theoretical investigations for two types of end conditions namely, flat-end and fixed-fixed. The numerical results given have been obtained using the ANSYS FEA software package. An experimental study of the buckling behaviour of lipped channel columns of same cross-section, but with different perforation shapes and end conditions is reported and the findings from this are used to validate numerical results; good correlation was obtained both with ultimate strength and failure modes. Further, the study showed that there are similar ultimate load values for corresponding compression members under flat-end and fixed-fixed end conditions, and in general, more conservative estimates of design rule predictions: AISI Specification, British Standard - BS 5950 Part 5, and Eurocode 3.",
keywords = "cold formed steel, FEA, load capacity, compression loading, perforations",
author = "Martin MacDonald and Kulatunga, {Muditha P.}",
year = "2014",
month = "11",
day = "5",
language = "English",
pages = "129--142",

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TY - CONF

T1 - The effects of end conditions on the load capacity of cold-formed steel column members of lipped channel cross-section with perforations subjected to compression loading

AU - MacDonald, Martin

AU - Kulatunga, Muditha P.

PY - 2014/11/5

Y1 - 2014/11/5

N2 - The effects of end boundary conditions on the compressive load carrying capacity of cold-formed lipped channel sections with perforations are investigated and discussed. Most structural cold-formed steel members are typically manufactured with perforations. These perforations are pre-cut to accommodate electrical, plumbing, and heating services and so on. Due to the size, shape, and position of perforations and end conditions, ultimate strength and elastic stiffness of a structural member can be varied. This paper describes the ultimate strength results obtained from numerical, experimental, and theoretical investigations for two types of end conditions namely, flat-end and fixed-fixed. The numerical results given have been obtained using the ANSYS FEA software package. An experimental study of the buckling behaviour of lipped channel columns of same cross-section, but with different perforation shapes and end conditions is reported and the findings from this are used to validate numerical results; good correlation was obtained both with ultimate strength and failure modes. Further, the study showed that there are similar ultimate load values for corresponding compression members under flat-end and fixed-fixed end conditions, and in general, more conservative estimates of design rule predictions: AISI Specification, British Standard - BS 5950 Part 5, and Eurocode 3.

AB - The effects of end boundary conditions on the compressive load carrying capacity of cold-formed lipped channel sections with perforations are investigated and discussed. Most structural cold-formed steel members are typically manufactured with perforations. These perforations are pre-cut to accommodate electrical, plumbing, and heating services and so on. Due to the size, shape, and position of perforations and end conditions, ultimate strength and elastic stiffness of a structural member can be varied. This paper describes the ultimate strength results obtained from numerical, experimental, and theoretical investigations for two types of end conditions namely, flat-end and fixed-fixed. The numerical results given have been obtained using the ANSYS FEA software package. An experimental study of the buckling behaviour of lipped channel columns of same cross-section, but with different perforation shapes and end conditions is reported and the findings from this are used to validate numerical results; good correlation was obtained both with ultimate strength and failure modes. Further, the study showed that there are similar ultimate load values for corresponding compression members under flat-end and fixed-fixed end conditions, and in general, more conservative estimates of design rule predictions: AISI Specification, British Standard - BS 5950 Part 5, and Eurocode 3.

KW - cold formed steel

KW - FEA

KW - load capacity

KW - compression loading

KW - perforations

M3 - Paper

SP - 129

EP - 142

ER -