Geometry-dependent stretchability and stiffness of ribbon kirigami based on large curvature curved beam model

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:182

Article

Wang, Yafei^1,2  Wang, Changguo^1,2  Tan, Huifeng^1,2 

[1] Harbin Inst Technol, Natl Key Lab Sci & Technol Natl Def Adv Composite, Harbin 150080, Heilongjiang, Peoples R China

[2] Harbin Inst Technol, Ctr Composite Mat, Harbin 150001, Heilongjiang, Peoples R China

关键词: Ribbon kirigami;    Stiffness;    Stretchability;    Curved beam;    Optimization;   

DOI  :  10.1016/j.ijsolstr.2019.08.007

来源: Elsevier

【 摘 要 】

This paper lays stress on the normalized stiffness and stretchability of planar ribbon kirigami. A dimensionless analytical model is proposed based on plane strain beam theory, in which the large curvature curved beam (LCCB) model is considered. The tensile experiments and simulations are performed and compared to validate the analytical model based on four dimensionless parameters. It is found that not all kirigami-based design is conducive to the enhancement of normalized stretchability. Remarkable long arm effect can enhance the normalized stretchability or reduce the normalized stiffness by several orders of magnitude. Finally, an optimization method is used to obtain the maximum normalized stretchability. The results in this paper can be used to guide the kirigami design in future application. (C) 2019 Published by Elsevier Ltd.

【 授权许可】

Free