Web crippling strength of cold-formed ferritic stainless steel unlipped channels with web openings

Amir M Yousefi, Nariman Saeed, Bijan Samali

Research output: Book chapter/Published conference paperConference paperpeer-review


Stainless steels are classified into the five main categories of austenitic, ferritic, martensitic, duplex and precipitation-hardening material grades. They are highly durable, ductile, corrosion resistant, aesthetically appealing materials. Among available stainless steel grades, ferritics are the most competitive economically due to its lower nickel content, and so have the widespread structural applications. Web crippling strength of cold-formed ferritic stainless steel channels subject to concentrated transverse loads is described in this paper. The channel flanges are unfastened with offset web openings, due to ease in service integration and loaded under one-flange load scenarios. Experimental results as well numerical results are presented. For the numerical investigations, the finite element models were developed using quasi-static analysis with implicit integration scheme. A complementary parametric investigations were then conducted to determine the web crippling strength reduction factor equations in terms of various channel sizes and position of openings in the web. Strength reduction factors recommended in previous research for lipped stainless steel channels are then compared to reduction factors determined from current study. It is found that the suggested reduction factors for such channels are unreliable to use and un-conservative to apply for unlipped ferritic stainless steel channels as much as 17%.
Original languageEnglish
Title of host publicationAustralian Structural Engineering Conference: ASEC 2020
Place of PublicationBarton, ACT
PublisherEngineers Australia
Number of pages15
ISBN (Print)9781925627350
Publication statusPublished - Jan 2020
EventAustralasian Structural Engineering Conference (ASEC) 2020 - Online
Duration: 11 Nov 202013 Nov 2020
https://web.archive.org/web/20200926225556/https://aseconference.org.au/sites/default/files/ASEC%202020%20Poster%20Listing%2020200915.pdf (Poster listing)
https://web.archive.org/web/20210223025745/https://aseconference.org.au/sites/default/files/ASEC%202020%20Program%20FINAL%2020201203.pdf (Program)


ConferenceAustralasian Structural Engineering Conference (ASEC) 2020
OtherRepresentatives from the HKA team are looking forward to participating in ASEC 2020 this week. Organised by Engineers Australia the conference will showcase a range of high calibre papers and presenters in the field of structural engineering.

This years conference committee included Nicolette Cumbo, who has helped to curate an exciting line up of industry leaders. Nicolette will be co-chairing a number of sessions over the course of the first 2 days. This years program will explore innovation and drivers of change in relation to sustainability, resilience, digital design and forensic engineering.
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