Effective torsional stiffness of composite shafts reinforced by functionally-graded fibres

摘要

In this paper, a fibre-reinforced composite shaft is considered, comprising functionally graded, cylindrically-orthotropic, parallel fibres embedded into a homogeneous isotropic matrix. The aim of the analysis is to determine the effective torsional stiffness of the shaft and the shear stresses at the fibre-matrix interface. In particular, the main issue is to understand how these quantities depend on the grading features of the fibres.