Original scientific paper

https://doi.org/10.21278/TOF.44201

Ring Buckling Analysis Based on the Toroidal Shell Theory

Ivo Senjanović ; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia
Damjan Čakmak ; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia
Neven Alujević ; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia
Ivan Ćatipović ; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia
Nikola Vladimir ; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia

Abstract

The in-plane and the out-of-plane buckling theory of rings exposed to external pressure is presented. A ring is considered as a segment of a toroidal shell. The governing ring equations are obtained by deducing the toroidal shell energy equations for the linear and the nonlinear strain. The obtained formulae for critical load are compared with those known in relevant literature. The critical load depends on the assumption concerning the load behaviour during buckling. Illustrative examples are solved numerically by means of several commercial FEM computer programs in order to investigate which assumptions are introduced in the ring buckling analysis.

Keywords

ring buckling; energy approach; in-plane buckling; out-of-plane buckling; critical load; analytics; FEM

Hrčak ID:

237810

URI

https://hrcak.srce.hr/237810

Publication date:

18.6.2020.

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