MDO/MSO of Slender Thin Walled Box Beam Model

This manuscript presents a two steps procedure, useful within preliminary design stages, to optimize High Aspect Ratio composite wing and investigate the effect of different materials on the structural performances. The selection of material is carried out based on structural performances rather than Material Selection Optimization. Notably, the effect of different material is evaluated taking advantage of the objective properties of tensor’s invariants and by the application of a linear scaling law. Scaled static, dynamic and aeroelastic performances have been compared with those obtained numerically. Through the optimization of the composite wing-box of a High Altitude Long Endurance aircraft, it has been demonstrated that near optimal solutions can be identified for a wide range of composite materials with the procedure presented herein, with no additional request of time and costs.