Shear behaviour of cold-formed stainless-steel beams with web openings: Numerical studies

Muhammadh Fareedh Muhammadh Ishqy; Somadasa Wanniarachchi; Keerthan Poologanathan; Shanmuganathan Gunalan; Perampalam Gatheeshgar; Thadshajini Suntharalingam; Satheeskumar Navaratnam

doi:10.1016/j.istruc.2021.01.049

Shear behaviour of cold-formed stainless-steel beams with web openings: Numerical studies

Muhammadh Fareedh Muhammadh Ishqy, Somadasa Wanniarachchi, Keerthan Poologanathan, Shanmuganathan Gunalan, Perampalam Gatheeshgar, Thadshajini Suntharalingam, Satheeskumar Navaratnam

SCEDT Engineering

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Cold-formed stainless-steel (CFSS) sections are increasingly popular for architectural and structural applications, especially in the corrosive environment due to its resistance to corrosion and other various benefits. The combination of stainless-steel material properties and the lightweight section properties makes the CFSS section the right choice for offshore steel structures. The demand for the stainless-steel sections in the construction industry is limited to a certain extent due to the higher cost; thus, the optimal use of stainless steel is vital. Openings to the web of CFSS Lipped Channel Beams (LCB) are introduced to facilitate the building services to reduce the floor height. Subsequently, the shear capacity is reduced due to the reduction of the web area. However, only very limited researches have been conducted so far to predict the reduced shear capacity of CFSS LCBs with circular web opening. Hence, this paper addresses a numerical study to investigate the shear behaviour and strength of cold-formed austenitic grade 1.4301 and duplex grade 1.4462 stainless steel LCB sections with unreinforced circular web openings. A detailed parametric study was carried out by developing 180 Finite Element Analyses (FEA) models to establish a wide-ranging shear strength database following the validation process with available shear test results. The analysis of the numerical results showed that the currently available reduction factor equations are either conservative or unsafe to use for the CFSS LCBs with circular openings. Hence, three sets of equations with different approaches to predict the shear capacity of CFSS LCBs with circular web opening are developed and presented in this paper.

Original language	English
Pages (from-to)	127-144
Number of pages	18
Journal	Structures
Volume	31
DOIs	https://doi.org/10.1016/j.istruc.2021.01.049
Publication status	Published - 13 Feb 2021

Bibliographical note

Funding Information:
The authors of this paper would like to appreciate the University of Ruhuna and the Northumbria University for providing necessary research facilities to perform this research.

Publisher Copyright:
© 2021 Institution of Structural Engineers

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title = "Shear behaviour of cold-formed stainless-steel beams with web openings: Numerical studies",

abstract = "Cold-formed stainless-steel (CFSS) sections are increasingly popular for architectural and structural applications, especially in the corrosive environment due to its resistance to corrosion and other various benefits. The combination of stainless-steel material properties and the lightweight section properties makes the CFSS section the right choice for offshore steel structures. The demand for the stainless-steel sections in the construction industry is limited to a certain extent due to the higher cost; thus, the optimal use of stainless steel is vital. Openings to the web of CFSS Lipped Channel Beams (LCB) are introduced to facilitate the building services to reduce the floor height. Subsequently, the shear capacity is reduced due to the reduction of the web area. However, only very limited researches have been conducted so far to predict the reduced shear capacity of CFSS LCBs with circular web opening. Hence, this paper addresses a numerical study to investigate the shear behaviour and strength of cold-formed austenitic grade 1.4301 and duplex grade 1.4462 stainless steel LCB sections with unreinforced circular web openings. A detailed parametric study was carried out by developing 180 Finite Element Analyses (FEA) models to establish a wide-ranging shear strength database following the validation process with available shear test results. The analysis of the numerical results showed that the currently available reduction factor equations are either conservative or unsafe to use for the CFSS LCBs with circular openings. Hence, three sets of equations with different approaches to predict the shear capacity of CFSS LCBs with circular web opening are developed and presented in this paper.",

author = "Ishqy, {Muhammadh Fareedh Muhammadh} and Somadasa Wanniarachchi and Keerthan Poologanathan and Shanmuganathan Gunalan and Perampalam Gatheeshgar and Thadshajini Suntharalingam and Satheeskumar Navaratnam",

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T2 - Numerical studies

AU - Ishqy, Muhammadh Fareedh Muhammadh

AU - Wanniarachchi, Somadasa

AU - Poologanathan, Keerthan

AU - Gunalan, Shanmuganathan

AU - Gatheeshgar, Perampalam

AU - Suntharalingam, Thadshajini

AU - Navaratnam, Satheeskumar

N1 - Funding Information: The authors of this paper would like to appreciate the University of Ruhuna and the Northumbria University for providing necessary research facilities to perform this research. Publisher Copyright: © 2021 Institution of Structural Engineers

PY - 2021/2/13

Y1 - 2021/2/13

N2 - Cold-formed stainless-steel (CFSS) sections are increasingly popular for architectural and structural applications, especially in the corrosive environment due to its resistance to corrosion and other various benefits. The combination of stainless-steel material properties and the lightweight section properties makes the CFSS section the right choice for offshore steel structures. The demand for the stainless-steel sections in the construction industry is limited to a certain extent due to the higher cost; thus, the optimal use of stainless steel is vital. Openings to the web of CFSS Lipped Channel Beams (LCB) are introduced to facilitate the building services to reduce the floor height. Subsequently, the shear capacity is reduced due to the reduction of the web area. However, only very limited researches have been conducted so far to predict the reduced shear capacity of CFSS LCBs with circular web opening. Hence, this paper addresses a numerical study to investigate the shear behaviour and strength of cold-formed austenitic grade 1.4301 and duplex grade 1.4462 stainless steel LCB sections with unreinforced circular web openings. A detailed parametric study was carried out by developing 180 Finite Element Analyses (FEA) models to establish a wide-ranging shear strength database following the validation process with available shear test results. The analysis of the numerical results showed that the currently available reduction factor equations are either conservative or unsafe to use for the CFSS LCBs with circular openings. Hence, three sets of equations with different approaches to predict the shear capacity of CFSS LCBs with circular web opening are developed and presented in this paper.

AB - Cold-formed stainless-steel (CFSS) sections are increasingly popular for architectural and structural applications, especially in the corrosive environment due to its resistance to corrosion and other various benefits. The combination of stainless-steel material properties and the lightweight section properties makes the CFSS section the right choice for offshore steel structures. The demand for the stainless-steel sections in the construction industry is limited to a certain extent due to the higher cost; thus, the optimal use of stainless steel is vital. Openings to the web of CFSS Lipped Channel Beams (LCB) are introduced to facilitate the building services to reduce the floor height. Subsequently, the shear capacity is reduced due to the reduction of the web area. However, only very limited researches have been conducted so far to predict the reduced shear capacity of CFSS LCBs with circular web opening. Hence, this paper addresses a numerical study to investigate the shear behaviour and strength of cold-formed austenitic grade 1.4301 and duplex grade 1.4462 stainless steel LCB sections with unreinforced circular web openings. A detailed parametric study was carried out by developing 180 Finite Element Analyses (FEA) models to establish a wide-ranging shear strength database following the validation process with available shear test results. The analysis of the numerical results showed that the currently available reduction factor equations are either conservative or unsafe to use for the CFSS LCBs with circular openings. Hence, three sets of equations with different approaches to predict the shear capacity of CFSS LCBs with circular web opening are developed and presented in this paper.

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VL - 31

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JO - Structures

JF - Structures

ER -

Shear behaviour of cold-formed stainless-steel beams with web openings: Numerical studies

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