This paper presents the expression of the "exact" stiffness matrix for a shear-flexible composite beam with partial interaction. The Timoshenko's kinematical assumptions are considered for both composants of the beam and shear connection is modelled through a continuous relationship between the interface shear flow and the corresponding slip. The transversal separation of the two members has been neglected. The differential equations derived with the above key assumptions have been solved in closed-form and the corresponding "exact" stiffness matrix has been derived by means of the well-known Direct Stiffness Method. The "exact" stiffness matrix may be utilized within the framework of a general F.E. numerical code to analyse the elastic behaviour of the continuous composite beam.
Closed-form solution for two-layer composite shear deformable beams with interlayer slip
MARTINELLI, Enzo
2010-01-01
Abstract
This paper presents the expression of the "exact" stiffness matrix for a shear-flexible composite beam with partial interaction. The Timoshenko's kinematical assumptions are considered for both composants of the beam and shear connection is modelled through a continuous relationship between the interface shear flow and the corresponding slip. The transversal separation of the two members has been neglected. The differential equations derived with the above key assumptions have been solved in closed-form and the corresponding "exact" stiffness matrix has been derived by means of the well-known Direct Stiffness Method. The "exact" stiffness matrix may be utilized within the framework of a general F.E. numerical code to analyse the elastic behaviour of the continuous composite beam.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
