  In this paper, the performance of different structural models based on global
approach in evaluating the static response of curvilinear fibre composite
laminates is analyzed. A Co shear flexible Quad-8 element developed based on
higher-order structural theory is employed for the present study. The
structural theory accounting for the realistic variation of displacements
through the thickness and the possible discontinuity in the slope at the
interface is considered. Four alternate discrete structural models, deduced
from the generic structural model by retaining various terms in the
displacement functions are examined for their applicability. The accuracy of
the present formulation is demonstrated considering the problems for which
analytical solutions are available. A systematic numerical study, assuming
different ply-angle and lay-up, is conducted in bringing out the influence of
various structural models on the static response of composite laminates with
curvilinear fibres.
