TY - JOUR
T1 - Web crippling behaviour of slotted perforated cold-formed steel channels
T2 - IOF load case
AU - Gatheeshgar, Perampalam
AU - Alsanat, Husam
AU - Poologanathan, Keerthan
AU - Gunalan, Shanmuganathan
AU - Degtyareva, Natalia
AU - Hajirasouliha, Iman
N1 - Funding Information:
The authors gratefully acknowledge the Northumbria University for financial support and providing necessary research facilities to conduct this research project.
PY - 2022/1/1
Y1 - 2022/1/1
N2 - This paper focuses on the web crippling performance of staggered slotted perforated Cold-Formed Steel (CFS) channels under Interior-One-Flange (IOF) load case, highlights the web crippling strength reduction, and provides reliable design guidelines. Finite Element (FE) analysis was employed to represent the IOF load case web crippling behaviour of staggered slotted perforated CFS channels. The developed FE models were then validated against laboratory tests on web crippling of CFS channels with both solid web and web openings under IOF load case. A parametric study (288 models) was conducted using the validated models to assess the effect of staggered slotted configurations and the corresponding degree of reduction in web crippling strength. It is shown that staggered slotted perforations play an important role in defining performance and may lead to a considerable reduction (up to 49%) in web crippling strength. Based on the results of the parametric study, new web crippling design equations were developed for IOF load case accounting the staggered slotted perforations. The web crippling strength predictions using the proposed equations yielded at a much higher level of accuracy, enhancing the commercial aspects of slotted perforated channels.
AB - This paper focuses on the web crippling performance of staggered slotted perforated Cold-Formed Steel (CFS) channels under Interior-One-Flange (IOF) load case, highlights the web crippling strength reduction, and provides reliable design guidelines. Finite Element (FE) analysis was employed to represent the IOF load case web crippling behaviour of staggered slotted perforated CFS channels. The developed FE models were then validated against laboratory tests on web crippling of CFS channels with both solid web and web openings under IOF load case. A parametric study (288 models) was conducted using the validated models to assess the effect of staggered slotted configurations and the corresponding degree of reduction in web crippling strength. It is shown that staggered slotted perforations play an important role in defining performance and may lead to a considerable reduction (up to 49%) in web crippling strength. Based on the results of the parametric study, new web crippling design equations were developed for IOF load case accounting the staggered slotted perforations. The web crippling strength predictions using the proposed equations yielded at a much higher level of accuracy, enhancing the commercial aspects of slotted perforated channels.
KW - Cold-formed steel beams
KW - Finite element analysis
KW - Interior-one-flange load case
KW - New design equations
KW - Staggered slotted perforations
KW - Web crippling strength
UR - http://www.scopus.com/inward/record.url?scp=85117771335&partnerID=8YFLogxK
U2 - 10.1016/j.jcsr.2021.106974
DO - 10.1016/j.jcsr.2021.106974
M3 - Article
AN - SCOPUS:85117771335
VL - 188
JO - Journal of Constructional Steel Research
JF - Journal of Constructional Steel Research
SN - 0143-974X
M1 - 106974
ER -