Strength enhancements in cold-formed structural sections — Part I: Material testing

Predictive models for strength enhancements in cold-formed structural sections

Cold-formed structural sections are manufactured at ambient temperature and hence undergo plastic deformations which result in an increase in the yield stress and ultimate stress, but reduced ductility. This paper begins with a comparative study of existing predictive models to harness this strength increase. Modifications to the existing models are then made and an improved model is presented....

Simulation of conventional cold-formed steel sections formed from Advanced High Strength Steel (AHSS)

The objective of this paper is to explore the potential impact of the use of advanced high strength steel (AHSS) to form traditional cold-formed steel structural members. In this study, shell finite element models are constructed, and geometric and material nonlinear collapse analysis performed, on simulated lipped channel cross-section cold-formed steel members roll-formed from AHSS. AHSS shee...

Comparative Study on Distortional Buckling Strength of Cold-Formed Steel Lipped Channel Sections

Usage of cold formed steel structural components for buildings and structures is gaining popularity in India for a decade. Hot rolled steel member behaviour and design are well developed, whereas the cold formed steel member behaviour and design is not developed fully compared to the rest of the world. The Indian code for cold-formed steel design, IS 801 was revised during 1975, which is in lin...

Fuzzy Approach for Optimization of Cold-Formed Cross Sections

This paper presents a fuzzy procedure for obtaining optimal design of channel section shapes under bending moment. The proposed approach refers to an ideal, equivalent single objective representation for the bicriteria objectives, where the cross-sectional area of thin-walled beam is the first objective, while the deflection of the beam is the second one. The design variables were selected as t...

Part I Introductory Material