Behaviour of cylindrically curved steel panels under in-plane stresses

João Pedro Martins

Publications

Publication Details

Title

Behaviour of cylindrically curved steel panels under in-plane stresses

Authors

João Pedro Martins

Abstract

The objective of this work is to analyse the stability behaviour of cylindrically curved steel panels under generalised in-‐‑plane compressive stresses and to develop design rules which overcome some limitations of current European Standards.
For the simplest case of pure compressive axial stresses, the most relevant works have been revisited and analysed. In what concerns the elastic critical stress of cylindrically curved panels, it was concluded that the expressions which are currently available return non-‐‑negligible errors. Relying on the fi-‐‑ nite element method and, at the same time, on an analytical formulation based on energy methods, new expressions presenting significant improvements and allowing obtaining the elastic critical stress also for panels under non-‐‑uniform in-‐‑plane loading are presented. Concerning the ultimate re-‐‑ sistance, the proposed method also shows improvements, but its main contri-‐‑ bution is that it allows obtaining the ultimate resistance also for panels under pure in-plane bending and a direct application to cross-‐‑sections.
Finally, it is worth mentioning that, albeit it is not proposed any new method to compute the ultimate load of cylindrically curved panels under biaxial loading, the behaviour of curved panels under this type of loading is analysed relying exclusively on numerical methods.

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