Abstract

Origami is a useful tool for generating novel spatial mechanisms that can address needs in a variety of fields. However, replicating paper folding in other materials requires surrogate folds---some way to approximate folding in otherwise rigid materials. This work presents a collection of potential surrogate fold designs suitable for use in origami-inspired applications. The designs are sorted into families and rated against several design characteristics of interest to engineers and designers to create the Surrogate Fold Catalog. The catalog is formatted to be searchable and filterable based on manufacturability, kinematic motion, and additional utility. Using this collection of surrogate folds can improve the efficiency of the design process and the efficacy of the final design. The value of integrating surrogate folds early in the design process is demonstrated in the design of gossamer reflectarray antennas. Mathematical models are provided that predict the location and amount of slip required to allow the array to roll compactly and minimize plastic deformation. Surrogate folds for different folding patterns are designed to allow for the predicted slip. Several cases of the design and use of surrogate folds with a range of materials and applications are presented, including forged carbon fiber and stained glass. A physical collection of various surrogate folds is shown as the Foldable Book of Surrogate Folds. Digital versions of the Surrogate Folds and the Foldable Book of Surrogate Folds are available in supplementary material.

Degree

College and Department

Ira A. Fulton College of Engineering; Mechanical Engineering

Rights

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