Layout optimization of doubly-curved laminated composite shells of revolution

Presents a finite element formulation of the layout-optimization and design sensitivity applied to doubly-curved shells of revolution. The objectives of the optimization are to maximize buckling pressures and first-ply-failure pressures. The problem is formulated and solved with the use of geometrically nonlinear transverse shear shell theory. However, the optimization method proposed limits the sensitivity analysis to a geometrically linear problem. Focuses special attention on the formulation of the optimization problem taking into account various factors, such as the form of geometrical and physical relations, types of design variables and the finite element discretization, Demonstrates several numerical examples to illustrate the capability of the proposed optimization procedures.