The present work puts in evidence some interesting features of Pultruded Fibre-Reinforced Plastic (PFRP) I-section columns. A finite-element model of a commercial I-section shape with dimensions 305x152x12.7 mm was implemented using four-node orthotropic plate elements. Ten column lengths were investigated, covering the range from stocky up to very slender columns. A nonlinear analysis of buckling and postbuckling was carried out using the displacement control method. It was observed that, in the case of stocky columns, the ultimate conditions are governed by the web failure, whereas, in the case of slender columns, the flange failure is attained due to the longitudinal compression. With respect to a wide-flange shape by the same pultruder and with equal cross-section area, the I-section column shows a higher ultimate resistance in a broad range of column lengths.
Finite element buckling and postbuckling analysis of pultruded FRP I-section columns
LAUDIERO, Ferdinando;MINGHINI, Fabio;TULLINI, Nerio
2012
Abstract
The present work puts in evidence some interesting features of Pultruded Fibre-Reinforced Plastic (PFRP) I-section columns. A finite-element model of a commercial I-section shape with dimensions 305x152x12.7 mm was implemented using four-node orthotropic plate elements. Ten column lengths were investigated, covering the range from stocky up to very slender columns. A nonlinear analysis of buckling and postbuckling was carried out using the displacement control method. It was observed that, in the case of stocky columns, the ultimate conditions are governed by the web failure, whereas, in the case of slender columns, the flange failure is attained due to the longitudinal compression. With respect to a wide-flange shape by the same pultruder and with equal cross-section area, the I-section column shows a higher ultimate resistance in a broad range of column lengths.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
