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ICTWS = International Conference on Thin-Walled Structures
The 2018 conference was held in Lisbon, Portugal.
Many papers on buckling of thin-walled columns, plates and shells.
See Article 106477
https://doi.org/10.1016/j.tws.2019.106477
Cris Moen wrote:
“Hello from beautiful Lisbon! Instituto Superior Técnico is hosting a wonderful conference, the International Conference on Thin-Walled Structures (ICTWS) and I am here along with NBM engineer Ben Schafer presenting and learning and mingling and spending time with our ‘thin-walled’ friends.
“Ben gave the first keynote lecture of the conference, which focused on the evolution and growth of the Direct Strength Method as the ‘go to’ method for designing thin-walled metallic structures, including cold-formed steel framing and metal building systems. Typical with a Schafer presentation, he started from history, discussing how Euler and Von Karman and Winter and Pekoz and Hancock all studied and extended the idea of slenderness from columns to beam to plates to members. Ben told the ‘story of slenderness’, highlighting that structural capacity almost always follows the slenderness parameter. This slenderness, represented commonly as the Greek letter LAMBDA, has many different flavors including kL/R, sqrt(Py/Pcr), sqrt (Fy/Fcr), and they all lead to an amazingly general predictor of structural capacity considering the tendency of the structure to buckle. Ben drove home his point about the growing popularity of the Direct Strength Method, which uses cross-sectional slenderness as a parameter to predict cold-formed steel capacity, with a plot of exponential publication citation growth over the past few years. He concluded with a summary of recent DSM advances, including its extension to beam-columns. The presentation and paper were warmly received, and there was even a comment from members of the conference committee sitting in the front of the room that the Eurocode should consider adopting DSM. Let’s see if this happens someday!
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