Motion Analysis of a Foldable Barrel Vault Based on Regular and Irregular Yoshimura Origami

Abstract

This paper investigates the geometry of a foldable barrel vault with Yoshimura Origami patterns during the motion. On the base of the geometry analysis of the origami unit, the radius, span, rise, and longitudinal length of the foldable barrel vault with regular Yoshimura Origami pattern in all configurations throughout the motion are determined. The results show that the radius of curvature and the span increase during deployment. But the rise increases first, followed by a decrease with increasing fold angle. Furthermore, the influence of the apex angle of the origami unit and the numbers of triangular plates in the span direction on the geometric parameters is also investigated. Finally, the method to obtain the rise and span of the barrel vault with irregular origami pattern is also given.

Yoshimura-origami Based Earthworm-like Robot With 3-dimensional Locomotion Capability

“…After understanding the folding behavior of a single-layer structure, the reachable workspace of a multi-layer structure is examined, which is an important index for robot design. Note that Yoshimura-ori structure has also been exploited for pneumatic actuation ( Paez et al, 2016 ), energy absorption ( Yang et al, 2016 ), and Barrel Vault ( Cai et al, 2015 ), however, a theoretical framework of folding kinematics has not been developed.…”

Synthesis analysis of the morphologies of convex polygonal tubular origami structures based on Yoshimura origami patterns

“…For example, Yoshimura origami pattern-based orthohexagonal and octagonal tubular origami structures are spatial tubular origami structures formed by folding and splicing two-dimensional flat folds. 23 The formed tubular origami structure exhibits the characteristics of nonrigid folding and structural symmetry and has been applied to the designs of cushioned energy-absorbing structures, 24,25 mechanical metamaterials, 26 and origami robots. [27][28][29] In addition to these special forms of tubular origami structures, such as orthohexagonal and octagonal, there are other forms of tubular origami structures with asymmetric edge numbers; nevertheless, a unified solution method has not yet been established, leading to limitations to research expansion on these origami models.…”

A Tapered Soft Robotic Oropharyngeal Swab for Throat Testing: A New Way to Collect Sputa Samples

“…The first is a Yoshimura origami-based soft collecting segment capable of elongating and twisting. Yoshimura origami structures have been proven to have excellent elongation properties [18], [19], and we improved the origami structure to couple the twisting motion to offer more friction for sampling. The second component is a soft bending actuator capable of horizontal bending to mimic the left-right collecting motion of a medical doctor as well as increase the working stability under a vertical tongue force.…”