Design and analysis of plate angles of the four-vertex origami pattern and its impacts on movement of rotational joints. (6th August 2021)

• Record Type: Journal Article
• Authors: Zare, Samira; Teodorescu, Mircea
• Is Part Of: Smart materials and structures. Volume 30:Number 9(2021)
• Publication Date: 2021-08-06
• Subjects: origami -- deployable structure -- flexible mechanisms -- spherical mechanisms -- pouch motors; Smart materials -- Periodicals; Strucural design -- Periodicals; 620.11
• DOI: 10.1088/1361-665X/ac15a3
• Languages: English
• ISSNs: 0964-1726

Abstract

Abstract: We present a pneumatic origami joint, which consists of 89 degrees plate angles of Four-vertex origami mechanism activated by pouch motors. The proposed prototype consists of four high-density polyethylene plates connected by flexible adhesive polyethylene tapes. A cutting-binding technique was used for the fabrication of the origami. This technique is inexpensive and easy to replicate. We modeled the kinematics of the origami as a spherical mechanism, and compared with experimental result, against several origami mechanisms with different angles of origami's plates. We found that an origami mechanism with a plate angle of 89 ∘ shows around 8.4 times higher rotational movement for a given angular displacement of the input link compared to a mechanism with a plate angle close to 0 ∘ or a simple fold which is equivalent to a revolute joint. The proposed design is flat-foldable (the sum of odd or even angles around the central vertex equals to 180 ∘ ). The pneumatic origami joint can fold and adapt its shape to the environment.