Print Email Facebook Twitter Passive Autonomy: Hygromorphic Rotational Actuators Title Passive Autonomy: Hygromorphic Rotational Actuators: Design & Evaluation Author Joosten, Sebastiaan (TU Delft Mechanical, Maritime and Materials Engineering) Contributor Radaelli, G. (mentor) Vallery, H. (mentor) Degree granting institution Delft University of Technology Date 2020-08-06 Abstract Inspired by phenomena in the plant world, ameteoro-sensitive rotational actuator is developed. The designuses a hygro-active shell, whose water-based swelling is restrictedat selective locations to form a helicoid structure. The influenceof geometrical parameters on the performance is investigatedusing a numerical analysis of various geometries, by looking atresulting rotation and torque during this rotation. Prototypesare built of five key geometries in the design space, to validatethe simulations and to investigate the real-life behaviourof the design. These prototypes are submerged in water toinvestigate their deformation, after which they are placed ina torsion machine to investigate the torque during rotation.The experiments result in similar rotations and torques as thesimulations. The designed Hygromorphic Rotational Actuator iscapable of passively rotating its own structure, thereby expandingthe possibilities of engineers and designers when designing passiveautonomous systems. Subject HygromorphingCompliant Shell Mechanismsmulti-stablezero-momentAdaptive structuresactuator To reference this document use: http://resolver.tudelft.nl/uuid:8e4ca59e-19e6-4e80-b456-63c99732395e Embargo date 2022-08-31 Part of collection Student theses Document type master thesis Rights © 2020 Sebastiaan Joosten Files PDF Passive_Autonomy_Hygromor ... ersion.pdf 18.47 MB Close viewer /islandora/object/uuid:8e4ca59e-19e6-4e80-b456-63c99732395e/datastream/OBJ/view