Pneumatic Auxetics: Inverse design and 3D printing of auxetic pattern for pneumatic morphing

Soya Eguchi, Claire Okabe, Mai Ohira, Hiroya Tanaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents Pneumatic Auxetics, an inverse optimization method for designing and fabricating morphing three-dimensional shapes out of patterns laid out flat. In origami/kirigami research, optimization of patterns that can be transformed into the target surface by inverse design has been attempted. On the other hand, in the research area of pneumatically actuated geometries, the control of the transformation using skeletons and membranes has been attempted. In the study of the inverse design of the auxetic pattern based on kirigami, it cannot actuate deformation by removing air because the design does not consider the thickness. Therefore, we simulate the pneumatic transition with the thick shell structure that is generated by offsetting the input surface (Figure 1). The designed skeleton is optimized for FGF (Fused Granular Fabrication) 3D printing, and it is 3D printed using soft elastomeric materials. These allow for both a deformable hinge and a rigid pattern. Thus, a skeleton made of a single material can be deformed to approximate the shape of the target-input surface by placing it in a membrane and removing the air. In this paper, we introduce related works and research contexts, challenges, inverse design simulator and its fabrication by 3D printing, and potential future applications.

Original languageEnglish
Title of host publicationCHI 2022 - Extended Abstracts of the 2022 CHI Conference on Human Factors in Computing Systems
PublisherAssociation for Computing Machinery
ISBN (Electronic)9781450391566
DOIs
Publication statusPublished - 2022 Apr 27
Event2022 CHI Conference on Human Factors in Computing Systems, CHI EA 2022 - Virtual, Online, United States
Duration: 2022 Apr 302022 May 5

Publication series

NameConference on Human Factors in Computing Systems - Proceedings

Conference

Conference2022 CHI Conference on Human Factors in Computing Systems, CHI EA 2022
Country/TerritoryUnited States
CityVirtual, Online
Period22/4/3022/5/5

Keywords

  • 3D printing
  • Auxetic Pattern
  • Inverse Design
  • smart materials

ASJC Scopus subject areas

  • Human-Computer Interaction
  • Computer Graphics and Computer-Aided Design
  • Software

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