Passive autonomy: Hygromorphic rotational actuators
| Autor: | Heike Vallery, Sebastiaan Joosten, Giuseppe Radaelli |
|---|---|
| Přispěvatelé: | Rehabilitation Medicine |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Helicoid
Computer science Numerical analysis Zero-moment Shell (structure) Mechanical engineering Torsion (mechanics) Deformation (meteorology) Condensed Matter Physics Rotation Hygromorphic Atomic and Molecular Physics and Optics Mechanics of Materials Actuator Signal Processing Meteoro-sensitive Torque General Materials Science Adaptive structure Electrical and Electronic Engineering Multi-stable Civil and Structural Engineering |
| Zdroj: | Smart Materials and Structures, 30(2) Smart Materials and Structures, 30(2):025008. IOP Publishing Ltd. |
| ISSN: | 0964-1726 |
| Popis: | Inspired by phenomena in the plant world, a meteoro-sensitive rotational actuator is developed. The design uses a hygro-active shell, whose water-based swelling is restricted at selective locations to form a helicoid structure. The influence of geometrical parameters on the performance is investigated using a numerical analysis of various geometries, by looking at resulting rotation and torque during this rotation. Prototypes are built of five key geometries in the design space, to validate the simulations and to investigate the behaviour of the design experimentally. These prototypes are submerged in water to investigate their deformation, after which they are placed in a torsion machine to investigate the torque during rotation. The experiments result in similar rotations and torques as the simulations. The designed Hygromorphic Rotational Actuator is capable of passively rotating its own structure, thereby expanding the possibilities of engineers and designers when designing passive autonomous systems. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|