Déversement élastique des barres maintenues latéralement

Abstract : This work is articulated around three axes. The first relates to the development of a new consistent theory of the lateral buckling of the profiles restrained laterally in translation and rotation. The second relates to the determination of the analytical expression of the critical buckling moment. Several calculations were carried out in parallel with two software whose princip les of research of the critical state are completely different. One, developed in this work, uses the numerical resolution of the system of differential equations. The other, named LTBEAM and developed by the C.T.I.C.M., is based on the finite element method. The differences between two numerical results always remained lower than 1 %. The third more pragmatic relates to the proposaI of an alternative method based on the study of buckling around an enforced axis of an equivalent section continuously restrained at one flange.
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Bruno Larue. Déversement élastique des barres maintenues latéralement. Autre. Université Henri Poincaré - Nancy 1, 2005. Français. ⟨NNT : 2005NAN10185⟩. ⟨tel-01754327⟩

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