A GENERAL DOUBLY-CURVED LAMINATE SHELL THEORY

The aim of the work summarized in this paper is the theoretical modell ing of laminated composite shells of arbitrary shape, in order to: imp rove the calculus of shear stresses, and especially to avoid shear cor rection factors; account for continuity conditions of displacements an d transverse shear stresses at layer interfaces as well as compatibili ty conditions of transverse shear stresses on the bonding surfaces; es timate the relevance of shear refinements, of membrane refinements and of the transverse stretching beyond standard kinematics; and to analy se the sensitivity to edge effects for significant boundary conditions .