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- W62017268 abstract "Cold-formed thin-walled steel members have a high strength to weight ratio and are easy to construct. They are widely used as load bearing members in low-rise housing construction, commercial buildings and in many other structural applications, for which both ambient and elevated temperature ultimate strength are important considerations. Thin-walled steel members are usually part of a wall construction and protected by gypsum boards from both sides and under fire exposure from one side, therefore the temperature and stress distributions are non-uniform in the cross-section. For ambient temperature design calculations, the traditional approach is the effective width method, but there is now a growing movement to replace the effective width method by the Direct Strength Method (DSM)1 because the latter offers advantages in efficiently dealing with sections with multiple stiffeners. Non-uniform temperature distribution in the crosssection makes it difficult to apply the effective width method but DSM may be suitable. This update reports a methodology and preliminary study to check the applicability of DSM for calculating the ultimate strength of cold-formed thin-walled steel members under non-uniform elevated temperature. It includes a brief introduction to DSM, validation of numerical simulation using ABAQUS, development of a methodology to adapt DSM to thinwalled columns with non-uniform temperature distribution in the cross-sections, and preliminary validation of the method based on numerical parametric simulations using the validated ABAQUS model." @default.
- W62017268 created "2016-06-24" @default.
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- W62017268 date "2011-11-01" @default.
- W62017268 modified "2023-09-23" @default.
- W62017268 title "Fire resistance design method for coldformed thin-walled steel structures" @default.
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