The motivation behind altering the geometry of the wing, known as the "wing morphing", is that it should lead to an improved performance and efficiency of the entire flight of the vehicle. When any morphing wing structures and controls are considered, an important parameter is often overlooked, which is the skin for the wing. As the wing morphs, the skin should comply with the altered geometry while maintaining its stiffness for aerodynamic loadings in various flight modes. Advantages of flexible skins include their large deformation capability and low elastic modulus. However, most research in the design of skins for morphing wings, which typically use smart materials, consider only geometric or static deformations but not dynamic ones. A simple geometry-structured material for skin is not very compliant for multi-dimensional morphing motions such as camber change and twisting, limited in meeting various aerodynamic and structural loadings and stresses, and expensive to establish design process for customized skins for morphing wings. This paper is focused on the modeling and stress/strain analysis of skin structure for camber morphing wing, namely Variable Camber Compliant Wing (VCCW). ANSYS structural model software is used for this study. Deformation of the wing by multiple linear actuators has been carefully investigated to match desired geometric deformation of wings. Stress and strain distributions of a shell model for composite skin have been investigated and analyzed. In-plane and out-of-plane stresses in skins have been investigated as the wing morphs.
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