In this paper, the elastic behaviour of monoclinic composite beams subject to uniform torsion is studied within the framework of the St. Venant's formulation. The stress components, the equilibrium and compatibility equations as well as the stress continuities at the layer interfaces are written both in terms of the warping and Prandtl’s stress functions. Particular attention is devoted to the analysis of the torsional response of multi-connected composite beams. The solution is given for composite tubular thin-walled sections and for laminated rectangular beams with any number of layers made of orthotropic materials. The plating of homogeneous beams by means of thin FRP-laminae is studied in details. It is shown that thin FRP-laminae can be used to make the torsional rigidity 10-20 times as much.
Uniform torsion of FRP structural shapes
TULLINI, Nerio
1995
Abstract
In this paper, the elastic behaviour of monoclinic composite beams subject to uniform torsion is studied within the framework of the St. Venant's formulation. The stress components, the equilibrium and compatibility equations as well as the stress continuities at the layer interfaces are written both in terms of the warping and Prandtl’s stress functions. Particular attention is devoted to the analysis of the torsional response of multi-connected composite beams. The solution is given for composite tubular thin-walled sections and for laminated rectangular beams with any number of layers made of orthotropic materials. The plating of homogeneous beams by means of thin FRP-laminae is studied in details. It is shown that thin FRP-laminae can be used to make the torsional rigidity 10-20 times as much.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
