Session: MR-04-01 - Origami-Based Engineering Design

Paper Number: 89035

89035 - Designing Multistable Mechanisms Using Quadrilateral Boundary Rigid Origami 

Multistable origami and its snapping behaviors between the folded states have attracted scientists' and engineers' attention as the building block for the design of mechanical devices and metamaterials. Although existing studies analyze the behaviors of existing origami patterns in detail, the design methodology for multistable origami structures is still limited. We propose a novel method for designing origami-based multistable structures, by which we mean (1) to obtain the prescribed overall motion and (2) to control the stiffness of snapping provided by the elastic strain.

We solve this design problem by first representing the desired motion with linkage structures that has quadrilateral holes, called the frames, and then filling the frames with origami modules, called quadrilateral boundary modules. By introducing an intentional incompatibility between the motions of the frames and the modules, we design the snapping behavior that follows the linkage motion.

We first provide the representation model of the motions of frames and modules to evaluate the incompatibility. Then, we propose an optimization-based design approach using this representation model to obtain the shapes of quadrilateral modules with desired stiffness.

The estimated behavior of our models was compared with the bar-and-hinge analysis and is shown to be in qualitative agreement. We also conducted experiments using the serial composition of two models and verified the 2-bit memory hysteresis transitions which occur between four stable states.

Presenting Author: Munkyun Lee The University of Tokyo

Presenting Author Biography: Department of Architecture, <br/>Graduate school of Engineering, <br/>The University of Tokyo<br/><br/>The main research subjects are Origami engineering, Deployable structure, and Wood kerfing.

Authors:

Yuki Miyajima The University of Tokyo
Munkyun Lee The University of Tokyo
Tomohiro Tachi The University of Tokyo