000012722 001__ 12722
000012722 005__ 20160920162641.0
000012722 04107 $$aeng
000012722 046__ $$k2016-09-05
000012722 100__ $$aMartins, A.D.
000012722 24500 $$aOn the Direct Strength Method (DSM) design of cold-formed steel beams experiencing local-distortional interaction

000012722 24630 $$n6.$$pInsights and Innovations in Structural Engineering, Mechanics and Computation
000012722 260__ $$bTaylor and Francis Group, London, UK
000012722 506__ $$arestricted
000012722 520__ $$2eng$$aThis work presents and discusses numerical results concerning the Direct Strength Method (DSM) design of cold-formed steel simply supported beams subjected to uniform bending and affected by Local-Distortional (L-D) interaction. The beams analysed exhibit (i) three cross-section shapes (lipped channels, hats and zeds) and (ii) two end support conditions (differing in the warping restraint). A systematic numerical investigation is carried out, in order to characterise the post-buckling behaviour and ultimate strength of beams experiencing more or less severe L-D interaction effects. 43 beam geometries and 11 yield stresses are considered for each combination of cross-section shape and boundary condition, thus ensuring distinct (i) ratios between the local (McrL) and distortional (McrD) critical buckling moments, such that 0.50 ≤McrD /McrL≤ 2.00, and (ii) local or distortional slenderness values, ranging from 0.50 to 3.50. The numerical results are obtained from Abaqus shell finite element analyses and concern the (i) post-buckling behaviour, (ii) ultimate strength and (iii) failure modes. Based on the acquired information, a first contribution towards the DSM design of cold-formed steel beams undergoing different “levels” of L-D interaction is presented and discussed.

000012722 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012722 653__ $$a

000012722 7112_ $$aSixth International Conference on Structural Engineering, Mechanics and Computation$$cCape Town, South Africa$$d2016-09-05 / 2016-09-07$$gSEMC2016
000012722 720__ $$aMartins, A.D.$$iCamotim, D.$$iDinis, P.B.
000012722 8560_ $$ffischerc@itam.cas.cz
000012722 8564_ $$s1250930$$uhttps://invenio.itam.cas.cz/record/12722/files/170.pdf$$yOriginal version of the author's contribution as presented on CD, 170.pdf.
000012722 962__ $$r12552
000012722 980__ $$aPAPER