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A platform for research: civil engineering, architecture and urbanism
Elastic buckling analysis of pultruded FRP portal frames having semi-rigid connections
AbstractPresented in this paper are results for the elastic instability of Pultruded Fibre Reinforced Polymer (PFRP) portal frames with semi-rigid connections. The kinematical model used is based on a second-order displacement field, accounting for the shear strain influence on both non-uniform bending and torsion. A two-node locking-free finite element with seven degrees of freedom per node is adopted. Joint flexibility at member ends is included by means of a simple manipulation of the stiffness matrix to the finite element, such that the influence of joint behaviour on membrane, shear, bending and torsion deformations, as well as to cross-section warping, can easily be taken into account. Numerical examples are reported and discussed to illustrate the influence on elastic buckling loads of in-plane and out-of-plane moment-rotation behaviour of joints, as well as the role played by the base warping restraint and deformable lateral bracings.
Elastic buckling analysis of pultruded FRP portal frames having semi-rigid connections
AbstractPresented in this paper are results for the elastic instability of Pultruded Fibre Reinforced Polymer (PFRP) portal frames with semi-rigid connections. The kinematical model used is based on a second-order displacement field, accounting for the shear strain influence on both non-uniform bending and torsion. A two-node locking-free finite element with seven degrees of freedom per node is adopted. Joint flexibility at member ends is included by means of a simple manipulation of the stiffness matrix to the finite element, such that the influence of joint behaviour on membrane, shear, bending and torsion deformations, as well as to cross-section warping, can easily be taken into account. Numerical examples are reported and discussed to illustrate the influence on elastic buckling loads of in-plane and out-of-plane moment-rotation behaviour of joints, as well as the role played by the base warping restraint and deformable lateral bracings.
Elastic buckling analysis of pultruded FRP portal frames having semi-rigid connections
Minghini, Fabio (author) / Tullini, Nerio (author) / Laudiero, Ferdinando (author)
Engineering Structures ; 31 ; 292-299
2008-09-01
8 pages
Article (Journal)
Electronic Resource
English
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