Buckling of stiffeners for stainless steel trapezoidal sheeting

Abstract

The calculation of the loadbearing capacity of thin‐walled structures, including trapezoidal sheeting, normally follows the procedures of EN 1993‐1‐3 and similar codes. EN 1993‐1‐4 complements this standard for thin‐walled structures made of stainless steel. Unfortunately, a buckling curve for stiffeners between the plane cross‐section parts of the flanges or the webs is lacking. A finite element analysis was performed in order to obtain a buckling curve for such stiffeners. The finite element model was calibrated based on test results and by recalculating the EN 1993‐1‐3 buckling curve for the stiffeners in trapezoidal sheeting made of non‐alloy structural steel. The results of the research into the loadbearing behaviour of thin‐walled stainless steel trapezoidal sheeting presented here are closing this gap: the proposed addition to the design formulae means it is now possible to carry out a complete calculation of the loadbearing capacity of stainless steel trapezoidal sheeting.

Distortional Buckling Resistance of Thin-Walled Profiles Made of Stainless Steel

“…It is clear from the comparison of the above mentioned buckling curves, that the resulting points from the parametric study are corresponding the best to the curve proposed by Misiek et al (2010). However, there is a considerable deviation of the results for lower slendernesses of the stiffener.…”

“…3). The comparison is done with the codified distortional buckling curves for carbon steel and for aluminium, and with the buckling curve proposed by Misiek et al (2010). There are three separate charts, each one for a different material type.…”

“…There was only little investigation done so far at the Karlsruhe Institute of Technology (KIT) by Blaß and Ummenhofer (2010), with a distortional buckling curve proposal published later in Misiek et al (2010). As expected, a significantly lower distortional buckling curve for stainless steel stiffeners was suggested.…”

Behaviour of Mineral Wool Sandwich Panels Under Bending Load at Room and Elevated Temperatures

“…It was observed that at room temperature, PIR cores had shown greater load-bearing capacity than MW cores. Stainless steel trapezoidal sheeting is used for applications with higher requirements regarding appearance or corrosion resistance, and they provide higher bending resistance than flat sheetings (Misiek et al, 2010). Vignesh Iyer et al (Iyer et al, 2018) carried out a comparative study between the three-point and four-point bending of rigid glass epoxy sandwich composites.…”