Design of rigidity and breaking strain for a kirigami structure with non-uniform deformed regions

Hiroki Taniyama, Eiji Iwase

Research output: Contribution to journalArticle

Abstract

We modeled a kirigami structure by considering the influence of non-uniform deforming cuts in order to theoretically design the mechanical characteristics of the structure. It is known that the end regions of kirigami structures are non-uniformly deformed when stretched, because the deformation is inhibited at the regions close to both the ends connected to the uncut region in the longitudinal direction. The non-uniform deformation affects the overall mechanical characteristics of the structure. Our model was intended to elucidate how cuts at both ends influence these characteristics. We focused on the difference in the deformation degree caused by a cut between the regions close to the ends and the center of the stretched kirigami device. We proposed a model comprising of connected springs in series with different rigidities in the regions close to the ends and the center. The spring model showed good prediction tendency with regard to the curve of the stress-strain diagram obtained using the tensile test with a test piece. Therefore, the results show that it is possible to theoretically design the mechanical characteristics of a kirigami structure, and that such a design can well predict the influence of cuts, which induce non-uniform deformation at both ends.

Original languageEnglish
Article number395
JournalMicromachines
Volume10
Issue number6
DOIs
Publication statusPublished - 2019 Jun 1

Fingerprint

Rigidity

Keywords

  • Flexible device
  • Kirigami structure
  • Mechanical metamaterials
  • Stretchable electronic substrate

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

Design of rigidity and breaking strain for a kirigami structure with non-uniform deformed regions. / Taniyama, Hiroki; Iwase, Eiji.

In: Micromachines, Vol. 10, No. 6, 395, 01.06.2019.

Research output: Contribution to journalArticle

@article{ecf361deb3b04b59a3e63106eed5ea8a,
title = "Design of rigidity and breaking strain for a kirigami structure with non-uniform deformed regions",
abstract = "We modeled a kirigami structure by considering the influence of non-uniform deforming cuts in order to theoretically design the mechanical characteristics of the structure. It is known that the end regions of kirigami structures are non-uniformly deformed when stretched, because the deformation is inhibited at the regions close to both the ends connected to the uncut region in the longitudinal direction. The non-uniform deformation affects the overall mechanical characteristics of the structure. Our model was intended to elucidate how cuts at both ends influence these characteristics. We focused on the difference in the deformation degree caused by a cut between the regions close to the ends and the center of the stretched kirigami device. We proposed a model comprising of connected springs in series with different rigidities in the regions close to the ends and the center. The spring model showed good prediction tendency with regard to the curve of the stress-strain diagram obtained using the tensile test with a test piece. Therefore, the results show that it is possible to theoretically design the mechanical characteristics of a kirigami structure, and that such a design can well predict the influence of cuts, which induce non-uniform deformation at both ends.",
keywords = "Flexible device, Kirigami structure, Mechanical metamaterials, Stretchable electronic substrate",
author = "Hiroki Taniyama and Eiji Iwase",
year = "2019",
month = "6",
day = "1",
doi = "10.3390/mi10060395",
language = "English",
volume = "10",
journal = "Micromachines",
issn = "2072-666X",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "6",

}

TY - JOUR

T1 - Design of rigidity and breaking strain for a kirigami structure with non-uniform deformed regions

AU - Taniyama, Hiroki

AU - Iwase, Eiji

PY - 2019/6/1

Y1 - 2019/6/1

N2 - We modeled a kirigami structure by considering the influence of non-uniform deforming cuts in order to theoretically design the mechanical characteristics of the structure. It is known that the end regions of kirigami structures are non-uniformly deformed when stretched, because the deformation is inhibited at the regions close to both the ends connected to the uncut region in the longitudinal direction. The non-uniform deformation affects the overall mechanical characteristics of the structure. Our model was intended to elucidate how cuts at both ends influence these characteristics. We focused on the difference in the deformation degree caused by a cut between the regions close to the ends and the center of the stretched kirigami device. We proposed a model comprising of connected springs in series with different rigidities in the regions close to the ends and the center. The spring model showed good prediction tendency with regard to the curve of the stress-strain diagram obtained using the tensile test with a test piece. Therefore, the results show that it is possible to theoretically design the mechanical characteristics of a kirigami structure, and that such a design can well predict the influence of cuts, which induce non-uniform deformation at both ends.

AB - We modeled a kirigami structure by considering the influence of non-uniform deforming cuts in order to theoretically design the mechanical characteristics of the structure. It is known that the end regions of kirigami structures are non-uniformly deformed when stretched, because the deformation is inhibited at the regions close to both the ends connected to the uncut region in the longitudinal direction. The non-uniform deformation affects the overall mechanical characteristics of the structure. Our model was intended to elucidate how cuts at both ends influence these characteristics. We focused on the difference in the deformation degree caused by a cut between the regions close to the ends and the center of the stretched kirigami device. We proposed a model comprising of connected springs in series with different rigidities in the regions close to the ends and the center. The spring model showed good prediction tendency with regard to the curve of the stress-strain diagram obtained using the tensile test with a test piece. Therefore, the results show that it is possible to theoretically design the mechanical characteristics of a kirigami structure, and that such a design can well predict the influence of cuts, which induce non-uniform deformation at both ends.

KW - Flexible device

KW - Kirigami structure

KW - Mechanical metamaterials

KW - Stretchable electronic substrate

UR - http://www.scopus.com/inward/record.url?scp=85068825620&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85068825620&partnerID=8YFLogxK

U2 - 10.3390/mi10060395

DO - 10.3390/mi10060395

M3 - Article

VL - 10

JO - Micromachines

JF - Micromachines

SN - 2072-666X

IS - 6

M1 - 395

ER -