Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 19 of 19 for “"Shape Morphing"”.
-
Shape morphing structures via intercalation compounds
… high-force, high-strain application, including shape-morphing helicopter blades, boat hulls, satellites, and any other structure that benefits from shape change. An analysis is performed on the state of the technology, the intellectual property held, and the potential markets that exist. A …
-
Hydrodynamically Coupled Shape-Morphing Beams Oscillating in a Viscous Fluid
… in the vertical direction and a harmonic shape-morphing deformation to an arc of a circle. We perform a comprehensive computational fluid dynamics (CFD) simulation campaign to estimate the hydrodynamic function describing the added mass effect and hydrodynamic damping effect of the …
-
Modulation Of Hydrodynamic Forces On Oscillating Submerged Structures In Viscous Fluids
… this goal, we propose the novel paradigm of "shape-morphing" structures, whereby time-varying structural deformations are considered to manipulate vortex shedding and viscous forces. For a comprehensive set of vibration scenarios, including flexural and torsional vibrations in an unbounded …
-
Investigation of Polymer-Filled Honeycomb Composites with Applications as Variable Stiffness Morphing Aircraft Structures
Shape morphing in aerospace structures has the potential to reduce noise, improve efficiency, and increase the adaptability of aircraft. Among the many challenges in developing morphing technologies is finding suitable wing skin materials that can be both stiff to support the structural loads, …
-
Develpoment of advanced structural multifield models for the study of smart wing
In the field of aeronautics, shape morphing has been used to identify those aircraft that undergo certain geometrical changes to enhance or adapt to their mission profile. In spite of there is not a clear definition of shape morphing, it is a general agreement that the conventional hinged control …
-
The design of adaptive structures for wing morphing
… adaptive structures for achieving global multi-shape morphing aerodynamic configurations, by using slender structures. The proposed methodologies pursue two threads towards global optimisation of morphing structures, by providing means of aerodynamic enhancement, using efficient structural shape …
-
Aerodynamic Flow Control through Adapted Leading Edge Enabled by Pneumatic Artificial Muscle Actuators
… at the wing–body junction through the use of a morphing leading-edge fairing actuated by pneumatic artificial muscles (PAMs). The compliant fairing, cast from Ecoflex® 00–31 silicone and embedded with a McKibben-type PAM actuator, was designed to dynamically reshape the junction surface and …
-
Multi-component Elastomer Composites for Next Generation Electronics and Machines
… material response, or stimuli-responsive shape and rigidity tuning. In recent years, these materials have become enabling for wearable electronics and soft machines which has led to the development of new material architectures that provide advanced functionalities while maintaining a low …
-
Engineering Dynamic Granular Composites for the Repair of Cartilage Tissue
… cartilage tissue repair, dynamic tissue shape morphing, and 4D bioprinting, where features such as microgel micromechanical properties, volume ratios of spheroids and microgels, rate of microgel degradation, and overall spatial positioning of granular composites were controlled. First, …
-
Bistable Hybrid Textile Structures: Combining Knitting and 3D Printing Fabrication Methods for Adaptive Building Skin Applications
… to environmental conditions and altering shape configuration to optimize performance and functionality. Building skin as an exterior additional layer of the building facade can control daylight emissions to reduce energy use for heating and cooling. Textiles present a great opportunity to …
-
A kinetostatic conceptual framework to design deformable mechanical metamaterials
… deformable metamaterials are deemed useful in shape morphing of airfoils, compliant mechanisms, wearable medical devices, stretchable electronics, and soft robotics. Design of deformable mechanical metamaterials is challenging because it requires considering the topology and deformations at …
-
Morphing Hypersonic Inflatable Aerodynamic Decelerator (HIAD) Mechanisms and Controls
… vehicle that utilizes a HIAD with an aerodynamic shape morphing capability is proposed. To date, the mechanisms and controls required to morph an inflatable structure to generate lift have not been explored. In this dissertation, novel morphing HIAD concepts are investigated and designed to …
-
Modeling and Control of SPIDER Satellite Components
… active dynamic analysis, vibration control, and shape morphing control of these satellites, a better-suited name for this technology is Super Precise Intelligent Deployables for Engineered Reconnaissance, or SPIDER. Unlike wisps of cobweb caught in the wind, SPIDER technology will dictate the …
-
Functional kirigami by exploiting elastic instabilities
Shape-morphing structures change their configurations in response to environmental stimuli. Their structural properties may also change as a consequence of the reconfiguration of their geometry and topology. Such reconfigurable structures are highly desired for their engineering functionalities in …
-
Hierarchical design of morphing shape-memory polymer structures via topology optimization
Shape memory polymers (SMPs) are a class of active polymeric materials that have the ability to regain their original undeformed configuration from a deformed state under the application of an external stimulus. In this study, we focused on the design optimization of SMPs that are actuated by the …
-
Surrogate models for the design and control of soft mechanical systems
… The design process is deemed useful in shape morphing adaptive structures such as airfoils, soft skins, and wearable devices for the upper extremities. Soft robotic systems such as manipulators are challenging to control because of their flexibility, ability to undergo large spatial …
-
A Kirigami Approach for Controlling Properties of Adhesives and Composites
… for generating various functionalities such as shape-morphing capability, large stretchability, and elastic softening for aeronautics, drug delivery, soft robotics, and stretchable electronics applications. Recently, techniques building upon kirigami principles, the Japanese art of paper …
-
Geometry of Creased Shell Structures
… such as tunable stiffness, deployability, and shape morphing. As such, the potential use of creased shells in a range of applications is intriguing. However, of dominant interest in this thesis is analysing the geometric and mechanical fundamentals of a crease in a shell instead of developing a …
-
Optimal Design and Analysis of Bio-inspired, Curvilinearly Stiffened Composite Flexible Wings
… structural layout design and aerodynamic wing shape morphing are all considered to address these aeroelastic problems through multidisciplinary design, analysis and optimization (MDAO) studies in this work. Performance Adaptive Aeroelastic Wing (PAAW) program was initiated by NASA to leverage …