Matches in UGent Biblio for { ?s ?p The use of steel beams with large circular web openings along the length of the beam has increased steadily during the last decades. However, not all aspects of the design of these cellular beams have been studied extensively, such as lateral-torsional buckling (LTB). In previous work, an existing design rule for this failure mode was investigated for purely elastic beams. Even though this rule was shown to be quite accuate for most cases, it could sometimes give unsafe results for certain short length geometries. In reality, however, the steel will display elastic-plastic behaviour, causing these geometries to fail by plasticity of the cross-section rather than elastic instability. In this work, the design rule will be further examined by performing numerical simulations, taking into account these effects of plasiticity, as well as imperfections and geometric nonlinearity. It will be shown that the existing design rule always gives safe results for the examined geometries.. }
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- aggregation abstract "The use of steel beams with large circular web openings along the length of the beam has increased steadily during the last decades. However, not all aspects of the design of these cellular beams have been studied extensively, such as lateral-torsional buckling (LTB). In previous work, an existing design rule for this failure mode was investigated for purely elastic beams. Even though this rule was shown to be quite accuate for most cases, it could sometimes give unsafe results for certain short length geometries. In reality, however, the steel will display elastic-plastic behaviour, causing these geometries to fail by plasticity of the cross-section rather than elastic instability. In this work, the design rule will be further examined by performing numerical simulations, taking into account these effects of plasiticity, as well as imperfections and geometric nonlinearity. It will be shown that the existing design rule always gives safe results for the examined geometries.".