The mechanical characteristics of graded Miura-ori metamaterials

Xinmei Xiang; Zushu Fu; Shaolin Zhang; Guoxing Lu; Ngoc San Ha; Yingjing Liang; Xin Zhang

Materials & Design (Dec 2021)

The mechanical characteristics of graded Miura-ori metamaterials

Xinmei Xiang,
Zushu Fu,
Shaolin Zhang,
Guoxing Lu,
Ngoc San Ha,
Yingjing Liang,
Xin Zhang

Affiliations

Xinmei Xiang: School of Civil Engineering, Guangzhou University, Guangzhou, Guangdong, China
Zushu Fu: School of Civil Engineering, Guangzhou University, Guangzhou, Guangdong, China
Shaolin Zhang: School of Physics and Materials Science, Guangzhou University, Guangzhou, China
Guoxing Lu: Faculty of Science, Engineering & Technology, Swinburne University of Technology, Hawthorn, Vic, Australia
Ngoc San Ha: Centre for Infrastructural Monitoring and Protection, School of Civil and Mechanical Engineering, Curtin University, Perth, Australia
Yingjing Liang: School of Civil Engineering, Guangzhou University, Guangzhou, Guangdong, China; Corresponding authors.
Xin Zhang: Department of Mechanics and Aerospace Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, China; Corresponding authors.

Journal volume & issue: Vol. 211
p. 110173

Abstract

Read online

Origami structures have been widely used for impact energy absorption in lightweight structures. Recently, Miura-ori metamaterial structures have been attractively investigated due to their unique geometric properties, adjustable stiffness and excellent energy absorption performance. In this study, the quasi-static compression characteristics of a Miura-ori based 3D printed stainless steel metamaterial are investigated. It is a graded metamaterial composed of multiple Miura-ori layers with different acute angles. The effects of different gradients on structural deformation and energy absorption were investigated by experiment and numerical simulation. The results show that the graded metamaterials have higher specific energy absorption (SEA) than the uniform ones. In addition, the graded metamaterials effectively reduce the decreasing amplitude of the compression loading after the peak force and improve the SEA compared with the uniform metamaterials. When the volume of the metamaterials remains the same, the energy absorption increases with the gradient interval size. The metamaterial with a negative gradient from the top and bottom to the middle layer has better energy absorption capacity.

Published in Materials & Design

ISSN: 0264-1275 (Print); 1873-4197 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-and-design

About the journal

Abstract

Keywords