Original scientific paper

A higher-order torsional beam theory

Ivo Senjanović ; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, CROATIA
Ying Fan ; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, CROATIA

Abstract

The effective parameters of torsional and warping stiffness, the effective polar mass moment of inertia and the mass bimoment due to warping for the thin-walled girders are formulated. This formulation is based on the energy equivalence in the governing formulae for natural frequencies of a thin-walled girder and its beam idealization assuming harmonic modes. For illustration, torsional vibrations of a square tube, a plate strip and a channel girder are considered. The results are checked by 3D FEM analysis for different boundary conditions.

Keywords

Hrčak ID:

319407

URI

https://hrcak.srce.hr/319407

Publication date:

12.12.1997.

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