Computational Design of Morphing Wing Structures through Multiple-Stage Optimization Process

This investigation introduces a novel optimization approach for conceptual design of a distributed actuation system that is capable of achieving radical structural shape changes, specifically applicable to morphing air vehicles. The topology and dimensional design process is implemented in two-stages: The actuation system layout is first determined through a multi-disciplinary topology optimization process and, then, the thickness or crosssectional area of each existent member is optimized under aerodynamics pressure and actuation loads. The previous investigation by the authors demonstrated the potential capabilities of a topology optimization methodology for determination of distributed actuation systems for a morphing wing structure without dimensional considerations. The primary objective of the present investigation, therefore, is to introduce the new methodology and processes to address the sizing issues. The investigation includes the formulation of appropriate optimization problems, solution sequence, and development of effective modeling concepts. Sample problems are solved to demonstrate the potential capabilities of the presented methodology.