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The ability for structures to change geometry in order to deliver a particular capability can be useful in a range of applications, including biomedical engineering, robotics, aerospace and civil applications. Deployable structures benefit from small volumes which can be stowed while in transit to the site of use, after which they are deployed to a new stable structure for application. Reconfigurable structures can dramatically alter their geometry in order to perform their required tasks.
This call for papers, leading to publication of a collection will publish research pushing forward the design, properties and practical applications of deployable and reconfigurable structures, including:
Fundamental understanding e.g. kinematics, shape morphing, buckling, packing, folding and deployment
Materials, design and realization, e.g. lightweight composites, inflatables, origami and kirigami techniques, computational design, actuation and hinge design
In a Review Article, Jonathan Sauder and colleagues develop a framework to categorize the variety of deployable structures and mechanisms available for operation on small satellites.
Yao and Ning present a method for sensing the folding and deployment behavior of tape spring hinges using skin-like strain and motion sensors. The integration of these soft sensors does not affect the structural deformations, thereby providing a solution to monitor the mechanical behavior of high-strain components under large deformations.
The fixed and narrow working frequency bandwidth limits the use of most acoustic absorbers in a dynamic acoustic environment. Shrestha and colleagues designed a tunable acoustic absorber capable of absorbing sound with varying frequency bands using dielectric elastomer bending actuators. The triangular petal-like structure actively reconfigures its shape by voltage activation to shift the noisy absorption spectrum, offering a practical solution for real-time outdoor noise absorption.
Liu, Zhang and Fang propose and experimentally demonstrate an optimization method for shape morphing of origami spring structures to approximate complex 3D curves by introducing virtual creases.