This paper deals with the problem of analysis of
beams made of SCP (sandwich composite panel)
composed of GFRP face sheets and foam core. In the frame
of research project, several specimens of different
compositions were tested by four-point bending according
to the actual standard. Nonlinear behaviour was observed
in some specimens and possible reasons are discussed in
the paper. SCP beams were also numerically simulated
using the finite element method in ANSYS Workbench
software. For practical and easy engineering design
(prediction of deformations and stresses) the analytical
procedure was developed for linear and nonlinear
behaviour. Results represented by P-Δ and P-σ diagrams
of experimental, numerical, and theoretical analysis are
compared together in this paper. Based on the analytical
solution the parametric study was performed to find out
the optimal composition of SCP members for specific static
boundary conditions
