TY - GEN
T1 - Effects of high temperature on web crippling strength of lean duplex stainless steel tubular sections
AU - Cai, Yancheng
AU - Lee, Chi Chung
AU - Mak, Shu Lun
N1 - Publisher Copyright:
© 2023 The Author(s).
PY - 2023
Y1 - 2023
N2 - In this paper, non-linear finite element models were developed for the web crippling of cold-formed lean duplex stainless steel (CFLDSS) square and rectangular hollow sections under the concentrated interior bearing loads at elevated temperatures (up to 950 °C). The interior bearing loads cover the loading conditions of Interior-One-Flange (IOF) and Interior-TwoFlange (ITF). The web crippling design rules in the current international specifications were examined. It was found that the predictions by the North American Specification were generally unconservative and not reliable, while the European Code provided reliable but very conservative predictions. New design method, the Direct Strength Method, was proposed for the web crippling strength of CFLDSS tubular sections at elevated temperatures under the loading conditions of IOF and ITF. The assessments indicate that the new method provides better strength predictions than the codified design rules. The new predictions are overall conservative and reliable.
AB - In this paper, non-linear finite element models were developed for the web crippling of cold-formed lean duplex stainless steel (CFLDSS) square and rectangular hollow sections under the concentrated interior bearing loads at elevated temperatures (up to 950 °C). The interior bearing loads cover the loading conditions of Interior-One-Flange (IOF) and Interior-TwoFlange (ITF). The web crippling design rules in the current international specifications were examined. It was found that the predictions by the North American Specification were generally unconservative and not reliable, while the European Code provided reliable but very conservative predictions. New design method, the Direct Strength Method, was proposed for the web crippling strength of CFLDSS tubular sections at elevated temperatures under the loading conditions of IOF and ITF. The assessments indicate that the new method provides better strength predictions than the codified design rules. The new predictions are overall conservative and reliable.
UR - http://www.scopus.com/inward/record.url?scp=85186733834&partnerID=8YFLogxK
U2 - 10.1201/9781003323020-241
DO - 10.1201/9781003323020-241
M3 - Conference contribution
AN - SCOPUS:85186733834
SN - 9781003323020
T3 - Life-Cycle of Structures and Infrastructure Systems - Proceedings of the 8th International Symposium on Life-Cycle Civil Engineering, IALCCE 2023
SP - 1967
EP - 1974
BT - Life-Cycle of Structures and Infrastructure Systems - Proceedings of the 8th International Symposium on Life-Cycle Civil Engineering, IALCCE 2023
A2 - Biondini, Fabio
A2 - Frangopol, Dan M.
T2 - 8th International Symposium on Life-Cycle Civil Engineering, IALCCE 2023
Y2 - 2 July 2023 through 6 July 2023
ER -