The paper proposes an efficient methodology that allows to design smart deformable aeronautical configurations are able achieve pre-defined target shapes by adjusting the temperature of Shape Memory Alloy (SMA) actuators. SMA-based actuation finds extensive application in morphing concepts which adopted aeronautics enhance aerodynamic performance continuously varying geometry wing. A novel robu...

this study presents a new approach to control the nonlinear dynamics of an adaptive absorber using shape memory alloy (sma) element. shape memory alloys are classified as smart materials that can remember their original shape after deformation. stress and temperature-induced phase transformations are two typical behaviors of shape memory alloys. changing the stiffness associated with phase tran...

A 3D lemniscate is the set of points whose product of squared distance to a given finite family of fixed points is constant. 3D lemniscates are the space analogs of the classical lemniscates in the plane studied in [5]. They are bounded algebraic surfaces whose degree is twice the number of foci. Within the field of computer aided geometric design (CAGD), 3D lemniscates have been considered in ...

Shape deformation analysis is concerned with determining a deformation of a given shape into another one, which is optimal for a certain cost. We provide the main ideas for a new general approach to shape deformation analysis, using the framework of optimal control theory. This point of view can be made independent from the parametrization of the shape, and allows to model general constrained s...

A novel Shape Memory Alloy (SMA) actuator consisting of several thin NiTi bers woven in a counter rotating helical pattern around supporting disks is rst described. This structure accomplishes a highly eecient transformation between force and displacement overcoming the main mechanical drawback of shape memory alloys, that being limited strain. Time domain open loop experiments were then conduc...

In this paper, hexagonal germanium dioxide (GeO2) nanostructures with different morphologies and sizes were successfully synthesized by a simple fast electrodeposition method. We investigated the electrochemical growth mechanism structural optical properties of products through Fourier transform infrared spectroscopy (FTIR), dispersive X-ray (EDX), diffraction (XRD) cathodoluminescence (CL). Th...

Recently, implicit patches have emerged as alternative modeling primitives for three dimensional objects. In designing three dimensional models, one often encounters various shape requests. This paper develops techniques for satisfying such requests through shape control. In particular, we show how to achieve the convexity of quadric patches or cubic patches.