Parametric studies and design recommendations of cold-formed steel sections with web openings subjected to web crippling

Asraf Uzzaman, James Lim, David Nash, James Rhodes, Ben Young

Research output: Contribution to conferencePaper

Abstract

A parametric study of cold-formed steel sections with web openings subjected to web crippling was undertaken using finite element analysis, to investigate the effects of web holes and cross-section sizes on the web crippling strengths of channel sections subjected to web crippling under both interior-two-flange (ITF) and end-two-flange (ETF) loading conditions. In both loading conditions, the openings were located at the mid-depth of the webs. It was demonstrated that the main factors influencing the web crippling strength are the ratio of the hole depth to the flat depth of the web, the ratio of the distance of the hole from the edge of the bearing plates to the flat depth of the web and the ratio of the length of bearing plates to the flat depth of the web. In this paper, design recommendations in the form of web crippling strength reduction factors are proposed; these are shown to be conservative to both the experimental and finite element results.

Conference

Conference6th International Conference on Coupled Instabilities in Metal Structures, CIMS 2012
CountryUnited Kingdom
CityGlasgow
Period3/12/125/12/12

Fingerprint

Bearings (structural)
Steel
Flanges
Finite element method

Keywords

  • cold-formed steel
  • web opening
  • web crippling
  • finite element analysis

Cite this

Uzzaman, A., Lim, J., Nash, D., Rhodes, J., & Young, B. (2012). Parametric studies and design recommendations of cold-formed steel sections with web openings subjected to web crippling. Paper presented at 6th International Conference on Coupled Instabilities in Metal Structures, CIMS 2012, Glasgow, United Kingdom.
Uzzaman, Asraf ; Lim, James ; Nash, David ; Rhodes, James ; Young, Ben. / Parametric studies and design recommendations of cold-formed steel sections with web openings subjected to web crippling. Paper presented at 6th International Conference on Coupled Instabilities in Metal Structures, CIMS 2012, Glasgow, United Kingdom.8 p.
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abstract = "A parametric study of cold-formed steel sections with web openings subjected to web crippling was undertaken using finite element analysis, to investigate the effects of web holes and cross-section sizes on the web crippling strengths of channel sections subjected to web crippling under both interior-two-flange (ITF) and end-two-flange (ETF) loading conditions. In both loading conditions, the openings were located at the mid-depth of the webs. It was demonstrated that the main factors influencing the web crippling strength are the ratio of the hole depth to the flat depth of the web, the ratio of the distance of the hole from the edge of the bearing plates to the flat depth of the web and the ratio of the length of bearing plates to the flat depth of the web. In this paper, design recommendations in the form of web crippling strength reduction factors are proposed; these are shown to be conservative to both the experimental and finite element results.",
keywords = "cold-formed steel, web opening, web crippling, finite element analysis",
author = "Asraf Uzzaman and James Lim and David Nash and James Rhodes and Ben Young",
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note = "6th International Conference on Coupled Instabilities in Metal Structures, CIMS 2012 ; Conference date: 03-12-2012 Through 05-12-2012",

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Uzzaman, A, Lim, J, Nash, D, Rhodes, J & Young, B 2012, 'Parametric studies and design recommendations of cold-formed steel sections with web openings subjected to web crippling' Paper presented at 6th International Conference on Coupled Instabilities in Metal Structures, CIMS 2012, Glasgow, United Kingdom, 3/12/12 - 5/12/12, .

Parametric studies and design recommendations of cold-formed steel sections with web openings subjected to web crippling. / Uzzaman, Asraf; Lim, James; Nash, David; Rhodes, James; Young, Ben.

2012. Paper presented at 6th International Conference on Coupled Instabilities in Metal Structures, CIMS 2012, Glasgow, United Kingdom.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Parametric studies and design recommendations of cold-formed steel sections with web openings subjected to web crippling

AU - Uzzaman, Asraf

AU - Lim, James

AU - Nash, David

AU - Rhodes, James

AU - Young, Ben

PY - 2012/12/3

Y1 - 2012/12/3

N2 - A parametric study of cold-formed steel sections with web openings subjected to web crippling was undertaken using finite element analysis, to investigate the effects of web holes and cross-section sizes on the web crippling strengths of channel sections subjected to web crippling under both interior-two-flange (ITF) and end-two-flange (ETF) loading conditions. In both loading conditions, the openings were located at the mid-depth of the webs. It was demonstrated that the main factors influencing the web crippling strength are the ratio of the hole depth to the flat depth of the web, the ratio of the distance of the hole from the edge of the bearing plates to the flat depth of the web and the ratio of the length of bearing plates to the flat depth of the web. In this paper, design recommendations in the form of web crippling strength reduction factors are proposed; these are shown to be conservative to both the experimental and finite element results.

AB - A parametric study of cold-formed steel sections with web openings subjected to web crippling was undertaken using finite element analysis, to investigate the effects of web holes and cross-section sizes on the web crippling strengths of channel sections subjected to web crippling under both interior-two-flange (ITF) and end-two-flange (ETF) loading conditions. In both loading conditions, the openings were located at the mid-depth of the webs. It was demonstrated that the main factors influencing the web crippling strength are the ratio of the hole depth to the flat depth of the web, the ratio of the distance of the hole from the edge of the bearing plates to the flat depth of the web and the ratio of the length of bearing plates to the flat depth of the web. In this paper, design recommendations in the form of web crippling strength reduction factors are proposed; these are shown to be conservative to both the experimental and finite element results.

KW - cold-formed steel

KW - web opening

KW - web crippling

KW - finite element analysis

UR - http://www.cims2012.org/

M3 - Paper

ER -

Uzzaman A, Lim J, Nash D, Rhodes J, Young B. Parametric studies and design recommendations of cold-formed steel sections with web openings subjected to web crippling. 2012. Paper presented at 6th International Conference on Coupled Instabilities in Metal Structures, CIMS 2012, Glasgow, United Kingdom.