Reference : Local and interactive post-buckling of RHS thin-walled members - Comparing a new special...
Scientific journals : Article
Engineering, computing & technology : Mechanical engineering
Engineering, computing & technology : Civil engineering
Local and interactive post-buckling of RHS thin-walled members - Comparing a new special beam finite element with shell FE models
Degée, Hervé mailto [Université de Liège - ULg > Département ArGEnCo > Département ArGEnCo >]
Boissonnade, Nicolas [> > > >]
Rossi, Barbara mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Adéquat. struct. aux exig. de fonct.& perfor. techn.-écon. >]
International Journal of Structural Stability & Dynamics
World Scientific Publishing Company
Yes (verified by ORBi)
[en] special beam finite element ; local buckling ; interactive buckling ; RHS thin-walled members
[en] This paper presents a special thin-walled plane beam. nite element that accounts for the in-plane cross-section local deformation. The element is based on the superposition of a classical beam displacement field and of an additional field describing local e. ects, with an approximation on the local second-order membrane stress. eld. The theoretical formulation is summarized and an application of the resulting numerical tool to the post-buckling analysis of RHS thin-walled members with moderate local and global slenderness susceptible to both global and local buckling is then performed. Different types of analyses are presented (computation of critical bifurcation loads, geometrically non-linear analysis, geometrically and materially non-linear analysis). The results obtained with the proposed beam. nite element are compared to values provided by shell FE models.

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