A dynamic grid technology was used to simulate the unsteady flow-field boundary movement and the mesh around an UAV [88]. The grid updating stage was changed automatically according to each iteration step based on the spring-based smoothing, and local remeshing method. Lift and drag coefficients...
Avoid discontinuities and sharply curved corners in the reference and control curves and surfaces, as they may introduce kinks or ripples into the morphed model. As you move over the model, it is important that there is always a unique closest point on the curve, and that the closest point...
First, the handling of the CFD mesh deformation taking account of morphing shape changes will be presented. An overview of the ONERA in-house developed tools will follow with reference to the CFD solver elsA [1] and the postprocessing chosen in this study that relied upon a far-field drag ...
are realized by respectively heating horizontal, diagonal, and all creases above the horizontal crease. The second module is a grid surface module that can morph into various shapes depending on the arrangement and actuation of the TCAs (Fig.7e). The surface is made of a single SMP mesh grid...
Combining this approach with multibody principles assures that such a mesh can also describe the motions of a physical structure. This would guarantee that the integrity of the structure is preserved and that the relations between the different sections of the structure are maintained during the ...
1.1. Actuation systems for morphing applications The state of the art of high-lift actuation systems of aircraft control surfaces predominantly consists of mechanical transmission shafts moved by rotary or linear hydraulic actuators with common control valves. These architectures assure a synchronous, safe...
Map to Geometryprovides quick ways of taking an existing mesh and conform it to a new geometry. Domains and handles can be used to provide better control on the morphing process. The geometry can be a line, node list, plane, surfaces, or elements using edge domains and handles to guide ...
Shape-changing materials open an entirely new solution space for a wide range of disciplines: from architecture that responds to the environment and medica
Moreover, its formation perfor- mance on curved surfaces is weak [1]. Therefore, a piezo-composite material is proposed to solve the challenges and problems encountered with con- ventional piezo ceramic material. The macro fiber composite (MFC) piezoelectric material is widely used in smart ...
Recent realizations of time-dependent morphing are limited to the actuation of few, discrete hinges and cannot form doubly curved surfaces. Here, we demonstrate a method for encoding temporal shape evolution in architected shells that assume complex shapes and doubly curved geometries. The shells are...