Stacking sequence optimization for constant stiffness laminates based on a continuous optimization approach

摘要: In this paper, an optimization procedure based on multi-phase topology is developed to determine the optimal stacking sequence of laminates made up conventional plies oriented at ?45°, 0°, 45 and 90°. The formulation relies SFP (Shape Functions with Penalization) parameterization, in which discrete problem replaced by a continuous approach penalty exclude intermediate values design variables. approach, material stiffness each physical ply expressed as weighted sum over candidate corresponding 90° orientations. SFP, two variables are needed for laminate parameterize respect 4 Even if only constant thickness considered specific rules used aeronautics composite panels (i.e., no more than maximum number consecutive same orientation sequence) however formulated taken into account problem. methodology demonstrated application. It discussed how different can affect solution.