Topology Optimization Approach for the Determination of the Multiple-Configuration Morphing Wing Structure

The paper introduces an innovative topology optimization approach for determining the distribution of structural properties and actuators to design a morphing wing that is capable of achieving multiple target shapes. The previous investigation by the authors demonstrated, using various problem formulations and a novel modeling concept, the fundamental topology synthesis of a simple two-configuration morphing wing structure. The primary objective of the present investigation is therefore to introduce improvements and extensions to the previous concepts and problem formulations to those capable of accommodating the multiple-configuration definitions. The investigation includes the formulation of appropriate topology optimization problems and the development of effective modeling concepts. In addition, principal issues on the external load dependency and the reversibility of a design, as well as the appropriate selection of a reference configuration, are addressed in the investigation. The methodology to control actuator distributions and concentrations is also discussed. Finally, an example multiple-configuration problem that portrays the generic surveillance mission is solved to demonstrate the potential capabilities of the approach.