Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
EXPERIMENTAL ANALYSIS OF AN ORIGAMI CELL ACTUATED BY SHAPE MEMORY ALLOYS
Submission Author:
Giovanni Seiji Cozzolino Enokibara , RJ
Co-Authors:
Giovanni Seiji Cozzolino Enokibara, Pedro Manuel Calas Lopes Pacheco, Marcelo Savi
Presenter: Giovanni Seiji Cozzolino Enokibara
doi://10.26678/ABCM.COBEM2019.COB2019-0481
Abstract
Origami structures have an increasing importance on the manufacturing of self-expandable systems applicable in several fields, from medicine to robotics and aerospace structures. Shape memory alloys (SMAs) are smart materials, which can develop recover strain up to 10% and generate high forces for actuation through the coupling of thermal and mechanical domains ,that present an interesting actuation capability for these systems. This paper presents an experimental analysis of an origami structure built with a waterbomb folding pattern. The actuation is provided by Z-shape torsional SMAs actuators heated by joule effect through the application of an electric current. A quasi-static analysis of a unit cell submitted to cyclic thermal cycles is carried out and origami structure movement is analyzed with laser sensors.
Keywords
Origami system, Shape memory alloys (SMA), self-expandable device
